2001 - 2004 GM 6.6L LB7 Duramax | Allison Transmission Tuning by PPEI RZR 1000 XP 4 EPS Designed as a direct replacement

Designed as a direct replacement for the factory manifolds

They mean you ride without worrying and hit harder trails

and 2-3hp with the Slip Ons

Once installed you’ll feel the difference the first time you take it out whether it’s in the dunes the woods or just your own backyard

Direct OEM Replacement: 529036098

2001 - 2004 GM 6.6L LB7 Duramax | Allison Transmission Tuning by PPEI RZR 1000 XP 4 EPS Designed as a direct replacementCARB EO Pending Extend your transmission life and increase your fuel economy with PPEI Transmission tuning! A MUST for tuned trucks with additional torque. The refined shift points get rid of the low rpm Lazy feel these trucks have that force the driver to stab the throttle for a downshift not cool and a fuel economy killer! For vehicles with larger turbochargers, ppei transmission tuning is a must to get the engine back into a rpm range to match the