2017-2026 GM Duramax 2500/3500 HD Duramax L5P 4" Down Pipe Back w/o Muffler (C6056PLM) T5125 · Leaves stock down/front pipe

·         Leaves stock down/front pipe and tail section in place

+400 ft-lbs torque

HP Tuners MPVI3 - this is used for programming the ECM and TCM if you decide to do so

Puts your vehicle near the 480 RWHP mark

EFI Live License

2017-2026 GM Duramax 2500/3500 HD Duramax L5P 4" Down Pipe Back w/o Muffler (C6056PLM) T5125 · Leaves stock down/front pipeIncrease your 2017 2026 Chevy GMC 2500 3500 6. 6L Duramax L5P's fuel efficiency, reduce maintenance expenses, extend engine longevity, and enhance performance with the C6056PLM 4" down pipe back exhaust kit from P1 Race Products. Made from cost effective aluminized steel, this exhaust kit provides exceptional value for your investment. Look to make a statement with this no muffler kit offering maximum flow and performance. Features Made in Canada