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Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco, Garage Buddy Complete Engine Rebuild Kit, 88.00 mm Bore, 10:1 CR

$843.95 $759.99 Save $83.96

SKU: W00C PWR131A-880

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The Wiseco Garage Buddy Engine Rebuild Kit (PWR131A-880) is a comprehensive solution for rebuilding 1999-2004 Honda TRX400EX Sportrax engines. This kit features a forged oversized bore piston (88.00mm, 3.00mm added) and includes a crankshaft assembly, bearings, gaskets, and seals. It also comes with a cam-chain for the 4-stroke application, aiming to exceed OEM specifications for durability and performance.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWiseco
Part NumberW00C PWR131A-880

Videos

I Bought a NEW Wiseco Crank For My Honda 400ex...How Long Will It Last?

I Bought a NEW Wiseco Crank For My Honda 400ex...How Long Will It Last?
The New Wiseco Crank Is Installed...Will It Run?! (Honda 400ex Build)

The New Wiseco Crank Is Installed...Will It Run?! (Honda 400ex Build)
Part 4 TRX400ex Complete Bottom End Rebuild

Part 4 TRX400ex Complete Bottom End Rebuild
Honda 400ex Build - Part 12 Lost - Motor Top End, Piston, Ring End Gaps, Intake Boot, Exhaust Studs

Honda 400ex Build - Part 12 Lost - Motor Top End, Piston, Ring End Gaps, Intake Boot, Exhaust Studs
Project 400ex Refresh: Episode 6 Top End Assembly part 1

Project 400ex Refresh: Episode 6 Top End Assembly part 1
Why Buy Wiseco Pistons | Wiseco Aftermarket Parts | Partzilla.com

Why Buy Wiseco Pistons | Wiseco Aftermarket Parts | Partzilla.com
Wiseco Piston Benefits | Benefits of Forged Pistons | Forged vs Cast Pistons | Partzilla.com

Wiseco Piston Benefits | Benefits of Forged Pistons | Forged vs Cast Pistons | Partzilla.com

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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