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JS Speed Diesel|5 in stockRegular price $689.00Unit price / per
$764.79Sale price $689.00 Regular price -
JS Speed Diesel|20 in stockRegular price $510.00Unit price / per
$825.00Sale price $510.00 Regular price -
Off-Road Use Only!{ "variantCount": 4, "variants": [{ "id": "43268979687517", "title": "GM Duramax LB7 (2001-2004)", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] }, { "id": "43268979720285", "title": "GM Duramax LLY (2004.5-2005)", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] }, { "id": "43268979753053", "title": "GM Duramax LBZ\/LMM (2006-2010)", "fitmentClass": "", "applicationCount": 8, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] }, { "id": "43268979785821", "title": "GM Duramax LML (2011-2016)", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] } ] }SaleJS Speed Diesel|20 in stockRegular price $880.13Unit price / per$999.99Sale price $880.13 Regular price -
{ "variantCount": 2, "variants": [{ "id": "43268997611613", "title": "304 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." } ] }, { "id": "43268997644381", "title": "409 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup with three-bolt flange only; excludes Cab \u0026 Chassis." } ] } ] }JS Speed Diesel|10 in stockRegular price $587.60Unit price / per -
{ "variantCount": 2, "variants": [{ "id": "43268996923485", "title": "304 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." } ] }, { "id": "43268996956253", "title": "409 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Excludes Cab \u0026 Chassis and late-2015 three-bolt-flange vehicles." } ] } ] }JS Speed Diesel|10 in stockRegular price $572.00Unit price / per -
Off-Road Use Only!{ "variantCount": 8, "variants": [{ "id": "43268976443485", "title": "2011-2015 \/ Delete Pipe \/ 304 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." } ] }, { "id": "43268976476253", "title": "2011-2015 \/ Delete Pipe \/ 409 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." } ] }, { "id": "43268976509021", "title": "2015.5-2016 \/ Delete Pipe \/ 304 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." } ] }, { "id": "43268976541789", "title": "2015.5-2016 \/ Delete Pipe \/ 409 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2015.5","2016"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." } ] }, { "id": "67701763571805", "title": "2011-2015 \/ 4\" Downpipe-Back Race Exhaust \/ 409 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." } ] }, { "id": "67701763604573", "title": "2011-2015 \/ 5\" Downpipe-Back Race Exhaust \/ 409 Stainless Steel", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Visually verify V-band (2011-early 2015) versus three-bolt flange (2015.5-2016) before ordering; tune before hardware removal." } ] }, { "id": "67701763637341", "title": "2015.5-2016 \/ 4\" Downpipe-Back Race Exhaust \/ 409 Stainless Steel", "fitmentClass": "", "applicationCount": 0, "applications": [] }, { "id": "67701763670109", "title": "2015.5-2016 \/ 5\" Downpipe-Back Race Exhaust \/ 409 Stainless Steel", "fitmentClass": "", "applicationCount": 0, "applications": [] } ] }SaleJS Speed Diesel|40 in stockRegular price $1,596.00Unit price / per$1,632.37Sale price $1,596.00 Regular price -
Mini Maxx|5 in stockRegular price $219.99Unit price / per
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JS Speed Diesel|9 in stockRegular price $2,100.00Unit price / per
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{ "variantCount": 2, "variants": [{ "id": "43268996333661", "title": "4\" System", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." } ] }, { "id": "43268996366429", "title": "5\" System", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015"], "body": "Pickup", "notes": "HD pickup only. Cab \u0026 Chassis and late-2015 trucks with a three-bolt flange excluded." } ] } ] }SaleJS Speed Diesel|10 in stockRegular price $505.00Unit price / per$786.50Sale price $505.00 Regular price -
{ "variantCount": 1, "variants": [{ "id": "43268995842141", "title": "Default Title", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only; Cab \u0026 Chassis excluded. Custom tuning required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only; Cab \u0026 Chassis excluded. Custom tuning required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only; Cab \u0026 Chassis excluded. Custom tuning required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only; Cab \u0026 Chassis excluded. Custom tuning required." } ] } ] }JS Speed Diesel|5 in stockRegular price $209.00Unit price / per -
{ "variantCount": 1, "variants": [{ "id": "43268995416157", "title": "Default Title", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014"], "body": "Pickup", "notes": "LML HD pickup application; custom tuning required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014"], "body": "Pickup", "notes": "LML HD pickup application; custom tuning required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014"], "body": "Pickup", "notes": "LML HD pickup application; custom tuning required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014"], "body": "Pickup", "notes": "LML HD pickup application; custom tuning required." } ] } ] }JS Speed Diesel|5 in stockRegular price $137.50Unit price / per -
Off-Road Use Only!{ "variantCount": 4, "variants": [{ "id": "43268979818589", "title": "GM Duramax LB7 (2001-2004)", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LB7", "years": ["2001","2002","2003","2004"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] }, { "id": "43268979851357", "title": "GM Duramax LLY (2004.5-2005)", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LLY", "years": ["2004.5","2005"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] }, { "id": "43268979884125", "title": "GM Duramax LBZ\/LMM (2006-2010)", "fitmentClass": "", "applicationCount": 8, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LBZ", "years": ["2006","2007"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LMM", "years": ["2007.5","2008","2009","2010"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] }, { "id": "43268979916893", "title": "GM Duramax LML (2011-2016)", "fitmentClass": "", "applicationCount": 4, "applications": [{ "verified": true, "make": "GM", "model": "Silverado 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Silverado 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 2500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." }, { "verified": true, "make": "GM", "model": "Sierra 3500", "engine": "6.6L", "type": "Duramax LML", "years": ["2011","2012","2013","2014","2015","2016"], "body": "Pickup", "notes": "HD pickup only. Confirm engine code at changeover years. Vehicle-specific tune and licensed AutoCal required." } ] } ] }JS Speed Diesel|20 in stockRegular price $357.50Unit price / per
