Wiseco Yamaha Raptor, Grizzly, Rhino 660 9.9:1 Compression Ratio Piston - Part #4966M10100

Forged from high-silicon aluminum alloy for maximum strength and dependability.

Innovative forging design and piston skirt provide maximum horsepower and torque.

Wiseco High-Performance piston kits are priced with piston, rings, pins and circlips (unless noted otherwise).

Oversize pistons require cylinder sleeving.

The Wiseco Yamaha Raptor, Grizzly, and Rhino 660 piston with a 9.9:1 compression ratio (Part #4966M10100) offers reliable performance for your ATV engine rebuilds. Crafted with precision, this piston features a durable construction designed to withstand high-pressure environments and ensure long-lasting operation. Its design optimizes combustion efficiency, contributing to improved power output and engine responsiveness. The piston is suitable for models requiring a high-quality replacement part that matches OEM specifications and enhances overall engine performance. Easy to install, this component is an essential upgrade for enthusiasts seeking to restore or upgrade their Yamaha ATV engines. Whether you're restoring a classic or maintaining a daily driver, this piston provides the durability and performance expected from Wiseco’s trusted manufacturing standards.

Features:

• Designed for Yamaha Raptor, Grizzly, and Rhino 660 models

• Compression ratio of 9.9:1 for improved power and efficiency

• Constructed from durable materials to withstand high-pressure combustion

• Precision-engineered to meet OEM specifications for reliable fit and function

• Easy installation for quick maintenance and engine rebuilds