Description
If you’re running a Honda ATC250R, TRX250R, or CR250R at the edge of its limits, a worn or stock piston is costing you power and reliability. The Wiseco +1.00 mm oversized piston delivers the compression and durability required for consistent high-RPM performance, whether you’re racing or pushing hard on technical terrain. This is the upgrade that transforms your engine from adequate to dependable.
Why choose this piston:
- High-silicon aluminum alloy construction withstands extreme combustion pressures and thermal cycling without deformation or premature wear
- CNC-machined Pro-Lite design ensures precise cam profile for optimized ring seal and reduced blow-by
- Lightweight wrist pin reduces reciprocating mass, allowing faster RPM acceleration and sharper throttle response
- +1.00 mm oversized bore increases displacement and compression ratio for measurable horsepower gains
- Engineered for demanding off-road and competition use—not a compromise solution
Technical Specifications:
- Manufacturer: Wiseco
- Part Number: 526M06700
- Oversized Bore: +1.00 mm
- Material: Forged high-silicon aluminum
- Fitment: Honda ATC250R (1985–1986)
- Fitment: Honda TRX250R (1986)
- Installation: Professional engine rebuild required
