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Wiseco

Wiseco Yamaha YZ125 98-00 (726M05400 2126CST) Piston

$225.95 $202.99 Save $22.96

SKU: W00C PK1173

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

Easy — 1–2 hours

Description

The Wiseco PK1173 is a Pro-Lite 2-stroke piston kit designed for the Yamaha YZ125 from 1998-2000. This standard bore piston kit features a 54.00mm bore size and a 54.5mm stroke length, resulting in a 125cc engine displacement. It is constructed from 4032 aluminum alloy for a superior strength-to-weight ratio and includes a high-performance ring kit and alloy pin for enhanced durability and sustained power.

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 PK1173

Videos

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Namura Top End Install | Yz125 Runs Again??!!

Namura Top End Install | Yz125 Runs Again??!!

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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