INTERNATIONAL | XS | S | M | L | XL | XXL | XXXL |
---|---|---|---|---|---|---|---|
EUROPE | 32 | 34 | 36 | 38 | 40 | 42 | 44 |
US | 0 | 2 | 4 | 6 | 8 | 10 | 12 |
CHEST FIT (INCHES) | 28" | 30" | 32" | 34" | 36" | 38" | 40" |
CHEST FIT (CM) | 716 | 76 | 81 | 86 | 91.5 | 96.5 | 101.1 |
WAIST FIR (INCHES) | 21" | 23" | 25" | 27" | 29" | 31" | 33" |
WAIST FIR (CM) | 53.5 | 58.5 | 63.5 | 68.5 | 74 | 79 | 84 |
HIPS FIR (INCHES) | 33" | 34" | 36" | 38" | 40" | 42" | 44" |
HIPS FIR (CM) | 81.5 | 86.5 | 91.5 | 96.5 | 101 | 106.5 | 111.5 |
SKORT LENGTHS (SM) | 36.5 | 38 | 39.5 | 41 | 42.5 | 44 | 45.5 |
Shipping
- Complimentary ground shipping within 1 to 7 business days
- In-store collection available within 1 to 7 business days
- Next-day and Express delivery options also available
- Purchases are delivered in an orange box tied with a Bolduc ribbon, with the exception of certain items
- See the delivery FAQs for details on shipping methods, costs and delivery times
Returns And Exchanges
- Easy and complimentary, within 14 days
- See conditions and procedure in our return FAQs
Have a question?
Vehicle Fitment:
2017, 2018, 2019 Chevrolet Silverado & GMC Sierra 2500 & 3500HD 6.6L Duramax L5P pickup trucks. Will not fit Cab & Chassis trucks.
Description: This 5" race exhaust starts at the downpipe and allows removal of the catalytic converter and DPF filter from the exhaust system for off-road
Features:
- 5" stainless steel piping
- Downpipe Back Race Exhaust System
- OE style hangers for easy installation
- Maximum flow for competition applications
- No bungs
- Increases Fuel Efficiency
**Off-road use only. Requires race tuning**
Related Product
EGR Cooler delete kit for 2017-2019 GM/ChevroletDuramax 6.6L engines.
Compatibility:
2017, 2018, 2019 GMC SIERRA / CHEVROLET SILVERADO 2500/3500
Features:
- Allows removal of the EGR Cooler
- No more plugged or leaking EGR system
- Includes all hardware and gaskets
- Increases fuel economy
- Increases engine longevity
*Off-road use only. Requires custom tuning*

Vehicle Fitment:
This stainless steel 4" Cat & DPF Delete Race Pipe fits the 2017 - 2019 GMC & Chevy Duramax 6.6L 2500/3500 pickup with the L5P engine. This kit will only fit models equipped with the OEM-style 4-bolt flange coming off of the turbo direct pipe. Race tuning required.. Will not fit Cab & Chassis trucks.
Description: This 4" race pipe allows removal of the catalytic converter and DPF filter from the exhaust system for off-road
Features:
- 4" stainless steel piping
- OEM Style 4-Bolt Flange
- OE style hangers for easy installation
- No Muffler - Straight Pipe
- Maximum flow for competition applications
- No bungs
**Requires race tuning**
Vehicle Fitment:
This stainless steel 4" Cat & DPF Delete Race Exhaust fits the 2017 - 2019 GMC & Chevy Duramax 6.6L 2500/3500 pickup with the L5P engine.
This kit will only fit models equipped with the OEM-style 4-bolt flange coming off of the turbo direct pipe.
Will not fit Cab & Chassis trucks.
Description: This 4" race exhaust allows removal of the catalytic converter and DPF filter from the exhaust system for off-road
Features:
- 4" stainless steel piping
- OEM Style 4-Bolt Flange
- OE style hangers for easy installation
- No Muffler - Straight Pipe
- Maximum flow for competition applications
- No bungs
**Requires race tuning. For off-road use only**