3.5" Downpipe For 2017-2025 Duramax
$349.99
Details
After removing the catalytic converter, exhaust gases can be discharged from the turbo more freely, effectively reducing heat buildup and lowering the turbo's operating temperature. At the same time, exhaust backpressure is significantly reduced, markedly improving engine intake efficiency—while gaining more torque and horsepower, fuel combustion becomes more complete. This allows you to fully unleash the passion of ultimate performance on the track, while also saving considerable fuel costs
Fitment
- 2017–2025Chevrolet / GMCSilverado / Sierra HD3.5L Duramax
Not sure it fits? Ask us before you order.
Shipping
Ships via FedEx or UPS. Shipping is calculated at checkout based on your order — this item ships as oversized freight. See the shipping policy.
All SDPI products are sold for lawful use. Performance calibrations are built for the emissions configuration you report and applicable local regulations — see our terms for details.