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Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco Yamaha YZ450F 20 13.51 CR Piston kit

$288.95 $259.99 Save $28.96

SKU: W00C 40255M09700

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

Moderate — 2–4 hours

Description

Part #: 40255M09700

Unlock peak performance with Wiseco dirt bike piston kits. Our dirt bike kits include lightweight, forged dirt bike pistons designed to withstand high RPMs and extreme conditions, ensuring consistent performance and longevity. Along with the piston, you'll find dirt bike piston rings, wrist pins, and circlips, all precision-engineered for a perfect fit and optimal combustion efficiency. Wiseco dirt bike piston kits are the choice of champions, offering a tangible upgrade in reliability and power delivery for serious riders.

Features:

  • Engineered, forged, and machined in the USA in Mentor, OH
  • Designed and built for each specific powersports engine
  • Improved tensile strength of forged material optimizes strength and service life
  • Dedicated forgings allow for optimized strength-to-weight ratio
  • Includes high-quality piston rings, wrist pin(s), and circlips

Wiseco Piston Kit, 97.00 MM Bore, 13.5:1 CR

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The Wiseco ArmorGlide® piston kit is engineered to deliver consistent performance and long-term reliability for Yamaha 450cc four-stroke engines. Designed as a 97.00mm Yamaha YZ450F piston with a 13.5:1 compression ratio, this Wiseco piston kit provides improved throttle response and efficient power delivery while maintaining excellent durability. Built to extremely tight tolerances, it ensures precise fitment and dependable operation for both performance riding and routine engine maintenance. Manufactured using high-quality materials for superior strength and thermal stability, this 97.00mm Yamaha WR450F piston kit is built to withstand demanding riding conditions. Precision machining reduces friction and wear, helping extend engine life while maintaining consistent compression. This Yamaha YZ450FX piston kit is well suited for trail riding, off-road racing, and professional rebuilds where reliability and performance balance are essential. It includes the piston, rings, wrist pin, and circlips for a complete installation.

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.

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Specifications

BrandWiseco
Part NumberW00C 40255M09700

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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