2015.5-2016 6.6L Duramax LML 4" CAT/DPF Delete Racepipe For Silverado Sierra 2500/3500HD

Name: 2015.5-2016 6.6L Duramax LML 4" CAT/DPF Delete Racepipe For Silverado Sierra 2500/3500HD
Brand: Vigor Diesel
SKU: 9983DPF0041US
Price: 224.11 USD
Availability: InStock

SKU: 9983DPF0041US

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Frequently Bought Together

2015.5-2016 6.6L Duramax LML 4" CAT/DPF Delete Racepipe For Silverado Sierra 2500/3500HD

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Brand

Vigor Diesel

Exhaust Type

DPF Delete Pipe Exhaust for

Pipe Diameter

Fitment

2015.5 -2016 Chevy / GMC Duramax Diesel LML Silverado and Sierra pickup trucksThese kits will only fit models equipped with the OEM style 3-bolt flange off the turbo direct pipe Will not fit the Cab & Chassis

Materials

T-409 Stainless Steel

Notes

How to figure out your car 2015 or 2015.5: The 2011-2015 downpipe is secured to the turbo-direct pipe using a V-band style clamp. The 2015.5-2016 uses a 3 bolt flange style connection. Be sure to visually verify the clamp style your truck is equipped with.

Thickness

2mm

Engine

LML 6.6L Duramax

2015.5-2016 6.6L Duramax LML 4" CAT/DPF Delete Racepipe

Vigor Diesel's 4-inch CAT/DPF Delete Racepipe is specifically designed for the 6.6L Duramax LML engine found in the 2015.5-2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD heavy-duty pickup trucks. This product is a special development for the later-model LML platform (3-bolt flange), replacing only the original mid-section DPF (diesel particulate filter) and DOC (oxidation catalyst) assembly. It uses a 4-inch straight-through pipe to replace the original dense filter structure, achieving quick modification and performance release without replacing the entire exhaust system.

Choose 4-inch Racepipe or 5-inch Downpipe-Back Exhaust?

Comparison	⚡ 4" Racepipe (2015.5-16 LML)	🔥 5" Downpipe-Back (2015.5-16 LML)
Coverage	Mid-section only (replaces DPF/DOC)	Mid + rear section (full after downpipe)
Core Positioning	🎯 Budget-friendly entry simplest, cheapest, most direct	👑 Ultimate performance maximum flow, extreme upgrade
Diameter	4" (mainstream sweet spot)	5" (+56% flow area)
Backpressure Reduction	⭐⭐⭐⭐ 80-90% reduction	⭐⭐⭐⭐⭐ Near zero
Sound	Raw straight-pipe, clear turbo whistle	Deepest, most aggressive, race-ready
Installation	⭐⭐⭐ Easiest (mid only)	Moderate (mid/rear work)
Price	$224.11	$599.99
Target Users	Budget-conscious, daily drivers, first-time mods	Performance enthusiasts, high-HP builds, competition

Compatibility Information

✅ Precisely Compatible

2015.5-2016 Chevrolet / GMC Heavy Duty Pickups

Chevrolet Silverado 2500HD / 3500HD
GMC Sierra 2500HD / 3500HD
Equipped with a 6.6L Duramax LML diesel engine
Crew Cab (Double Cab) Models
Later LML models equipped with original 3-bolt flanges

❌ Incompatible

Not applicable to 2011-2015 early model LMLs (V-band clamp version)
Not applicable to Regular Cab (Standard Cab) Models
Not applicable to Cab & Chassis (Chassis Cab Only) Commercial Vehicles

Important Note - Flange Type Verification: This system is only applicable to 2015.5-2016 late model LMLs equipped with 3-bolt flanges. If your 2011-2015 early model (V-band clamp), please purchase the corresponding V-band version. Please visually confirm your turbocharger outlet flange type before purchasing.

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