Wiseco High-Compression Piston Kit for Honda CRF250R/RX, 79.00 mm (RE826M07900)

Upgrade your Honda CRF250R or CRF250RX with the Wiseco RE826M07900 piston kit, engineered through research and development to deliver dyno-proven power gains, stronger performance, and improved durability. Its high-compression design is optimized for responsive torque and sharper throttle response, while the precision dome profile promotes efficient flame travel for more complete air and fuel combustion. The piston is manufactured from billet material to provide an excellent strength-to-weight balance and a precise fit for demanding racing applications.
The asymmetric skirt design improves wear characteristics and distributes loading more evenly across the major thrust surface. An ArmorGlide® skirt coating helps reduce friction, quiet piston operation, and improve scuff resistance. The DLC-coated piston pin further reduces friction and resists scuffing, while enhanced pin oiling supports improved lubrication throughout operation. A pressure seal groove helps prevent ring lifting and minimize power loss under high-load conditions.
This Wiseco piston kit includes a precision-fit ring set with a custom-lapped compression ring, piston pin, and circlips for a complete installation package. Compression is rated at 14:1 for 450cc applications and 14.5:1 for 250cc applications, supporting maximum torque and throttle response in compatible configurations. Made in the USA, the Wiseco RE826M07900 is designed for riders and builders seeking reliable high-performance replacement components for Honda CRF250R and CRF250RX motorcycles.

Features:

• Dyno-proven design developed to provide power gains

• High-compression piston improves torque and throttle response

• Asymmetric skirt design promotes even loading and improved wear

• Billet-machined construction provides a strong, lightweight design

• Dome profile improves flame travel and combustion efficiency

• DLC-coated piston pin reduces friction and improves scuff resistance

• Enhanced pin oiling supports improved lubrication

• Pressure seal groove helps reduce ring lifting and power loss

• ArmorGlide® skirt coating reduces friction and improves durability

• Precision-fit ring set includes a custom-lapped compression ring

• Kit includes piston rings, piston pin, and circlips

• Made in the USA

Ships from Parts Unlimited.