GM Duramax Delete Kits – DPF / EGR / DEF

Maximize exhaust flow, lower EGTs, and unlock real performance from your early Duramax. This 4" or 5" Downpipe-Back Race Exhaust System is built for 2001–2007 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax e...

Essential upgrade for smooth delete tuning. The Duramax LM2 CAN BUS Plug is specifically engineered for 2020–2022 Chevy Silverado 1500 and GMC Sierra 1500 LM2 diesel trucks. It ensures proper communication between your ECM and modified components ...

Take your L5P GM Duramax Silverado or Sierra to the next level with JS Speed’s unlocked T87A & T93 TCMs. Designed for both 8-speed and 10-speed transmissions, these TCMs deliver unmatched customization, quicker shifting, and maximum reliabilit...

Upgrade Your Intake System for Maximum Durability & Flow The Duramax LLY Y-Bridge Kit is built to replace the factory intake bridge, which is prone to blowing apart under boost and causing drivability issues. This heavy-duty, high-flow system ...

Eliminate intake restriction and restore smooth airflow. Designed for 2011–2016 6.6L Duramax LML trucks, this billet throttle valve delete replaces the factory grid heater throttle assembly that can restrict airflow—especially on tuned or modified...

Remove restrictive EGR components and simplify your LLY setup. This EGR Delete Kit is designed for 2004.5–2005 GM 2500HD/3500HD trucks equipped with the 6.6L LLY Duramax engine. Built for off-road and competition applications, this kit removes the...

Reduce soot. Simplify your engine bay. Support long-term reliability. This EGR Delete Kit is engineered for 2016–2022 Chevrolet Colorado and GMC Canyon trucks equipped with the 2.8L LWN Duramax engine. Designed for off-road and competition applica...

Unlock the performance potential of your 2015.5–2016 Duramax 6.6L with this 4" or 5" Downpipe-Back DPF Delete Exhaust System. Built from T409 stainless steel, this system replaces restrictive factory components—including the catalytic converter an...

Unlock your truck’s full capability with the EFILive AutoCal V3 DPF Delete Tuner, complete with JS Speed custom tuning. Built for GM Duramax 6.6L engines, this tuner delivers horsepower gains, improved fuel economy, and real-time control, ensuri...

Unleash the power of your GM Duramax LM2 (2020-2022) with this 3" Stainless Steel Exhaust System, crafted to enhance performance and efficiency. The Duramax LM2 Cat and DPF Race Pipe improves airflow, reduces exhaust gas temperatures, and delivers...

Open up your LMM’s airflow and let it breathe. Designed for 2007.5–2010 Silverado and Sierra 2500HD/3500HD pickups equipped with the 6.6L Duramax LMM, this downpipe-back exhaust system improves exhaust efficiency, lowers backpressure, and produces...

Control crankcase pressure. Protect your intake system. This CCV (Crankcase Ventilation) Upgrade Kit is designed for 2012–2016 6.6L Duramax LML trucks and replaces the restrictive factory crankcase ventilation assembly. By properly venting blow-by...

Replace the factory CCV weak points with billet reliability. This CCV Upgrade Kit is designed for 2017–2024 6.6L Duramax L5P trucks and replaces the failure-prone OEM plastic crankcase ventilation/PCV box with precision-machined billet aluminum co...

Smoother airflow. Stronger materials. Cleaner engine bay. This Intake Bridge Kit is designed for 2011–2016 GMC Sierra and Chevrolet Silverado 2500/3500HD trucks equipped with the 6.6L Duramax LML. Featuring mandrel-bent aluminum tubing and CNC-mac...

The Duramax LBZ/LMM Y-Bridge Kit replaces the factory intake bridge, which is prone to blowing apart under boost and causing drivability issues. Built with heavy-duty materials and a high-flow design, this kit improves airflow, lowers exhaust gas ...

Unleash maximum airflow and aggressive performance with the JS Speed Downpipe-Back Race Exhaust System. Built for 2017–2023 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax L5P engine, this stainless steel exh...

Unlock more power and efficiency from your 2017–2023 Chevrolet Silverado & GMC Sierra 2500/3500HD 6.6L Duramax L5P with this 3.5" turbocharger downpipe upgrade. By fully removing the Diesel Oxidation Catalyst (DOC), this pipe maximizes exhaust...

Eliminate EGR system issues, increase efficiency, and extend your Duramax’s engine life. Vehicle Compatibility 2006 GMC Sierra 2500/3500 6.6L Duramax LBZ 2007 GMC Sierra 2500/3500 6.6L Duramax LBZ 2006 Chevrolet Silverado 2500/3500 6.6L Duramax L...

Take control of your Chevrolet Silverado or GMC Sierra 2500/3500 6.6L Duramax with a pre-modified, unlocked E41 ECM. This upgrade enables advanced tuning without the hassle of traditional modifications, giving you more performance and full flexibi...

Introduction GM Duramax L5P All-In-One Delete Kit (2017-2025) is built for owners who want a complete, tuner-ready off-road solution without piecing together hardware, tuning and exhaust from multiple sources. This L5P delete kit is designed to a...

Introduction Protect exposed wiring after emissions modifications with the Duramax DPF Delete Plug Kit (2011-2023). Designed for GM/Chevy 6.6L LML, LGH, L5P and L5D engines, this kit seals unused exhaust and EGR connectors to block out moisture,...

Boost the performance and reliability of your 2020–2022 GMC Sierra or Chevrolet Silverado 1500 LM2 3.0L Duramax with the JS Speed LM2 EGR & Cooler Delete Kit. Engineered for precision, this kit eliminates the failure-prone EGR cooler system to...

Refined power. Smarter drivability. Real-world performance. Designed specifically for the 2022.5–2025 GM 3.0L Duramax LZ0 platform, this custom Power Tune Package enhances torque delivery, throttle response, transmission behavior, and overall effi...

Wireless tuning support and live diagnostics for GM Duramax. The EZ LYNK Duramax platform combines cloud-based tune delivery, real-time data monitoring, and remote technician access for supported 2007.5–2023 Duramax trucks. With the Auto Agent 3 a...