Sale

Drivetrain Automatic Transmissions and Components

Pacific Performance Engineering

Stage5R Trans Upgrade Kit 2004.5-05 w o TC

$1,699.99 $1,529.99 Save $170.00

SKU: P00X 128035612

In Stock
In Stock
Ships by Jun 9
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

This heavy-duty transmission upgrade kit for Allison transmissions is designed for sled pulling, drag racing, everyday driving, and off-roading. It enhances strength, reliability, and increases holding power. The kit includes a triple clutch converter, valve body recalibration kit, boost valve, pump shim and gaskets, upgraded C1, C2, C3, and C4 clutches and Kolene steels, and a converter flow valve. (Note: Torque converter sold separately).

Fitment

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Specifications

BrandPacific Performance Engineering
Part NumberP00X 128035612

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Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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