Wiseco K130 Piston Kit for Yamaha RD350/RD400 — 64.5mm Bore

Designed for two-stroke Yamaha RD350 and RD400 models, the Wiseco K130 top-end kit provides a precise, factory-fit rebuild that restores peak compression and power. The kit uses a forged aluminum piston assembly machined to a 64.5mm bore, aligning with OEM cylinder dimensions for dependable operation and consistent ring seal across heat cycles.

• Two forged pistons crafted for strength-to-weight efficiency
• High-performance rings and piston pins
• Retainer clips and a complete top-end gasket kit included

Wiseco’s top-end kits are engineered for durability under demanding riding conditions, with precision machining to ensure proper clearance and reliable performance. This K130 kit is tailored for Yamaha RD350 and RD400 engines, making it a straightforward path to restore horsepower, throttle response, and overall engine health during a rebuild or upgrade. The included gasket kit helps seal the top end, reducing leaks and maintaining compression over time.

WISECO TOP END PISTON KIT.
Wiseco's complete top end piston kits are offered for nearly every popular application.

These kits contain everything you need to complete your rebuild the right way.

4-stroke kits feature a 'race-ready' dome finish with smooth edges for improved combustion flow.

Most PK/SK/WK/VT kits from Wiseco feature a complete top end gasket kit.

4-stroke race applications feature Wiseco's ArmorGlide skirt coating to provide reduced friction and noise to contribute to increased horsepower.

Dedicated forgings used for superior strength to weight ratio.

High-Performance ring kit and alloy pin included with each piston kit.

The Wiseco Yamaha RD 350/400 Piston K130 is engineered to deliver reliable performance and durability for your motorcycle. Crafted with precision, this piston ensures optimal fit and function, restoring your engine's power and efficiency. Made from high-quality materials, it withstands the rigors of demanding riding conditions, providing longevity and consistent performance over time.

Designed specifically for Yamaha RD 350 and RD 400 models, the Wiseco K130 piston features a precise fit that promotes smooth operation and effective combustion. Its robust construction minimizes wear and tear, helping maintain engine integrity and performance. Whether you're performing a rebuild or replacing worn components, this piston is a vital part to keep your motorcycle running at its best.

Installation is straightforward for experienced mechanics, and the piston’s specifications are tailored to match OEM standards for compatibility and reliability. Trust the Wiseco K130 piston to enhance your motorcycle's performance, ensuring you enjoy a smooth and powerful ride with every outing.

Features:

• Designed for Yamaha RD 350 and RD 400 models

• Constructed from durable materials for long-lasting performance

• Precisely machined to ensure a perfect fit and optimal engine operation

• Engineered to withstand high temperatures and pressures

• Supports reliable compression and power output