Description
Top End Kit – 86.75 mm – Honda
Upgrade your Honda engine with the WSM Top End Kit, part number 54-231-21, featuring a precision-machined 86.75 mm piston designed for 4-stroke models. This comprehensive kit includes high-quality pistons, rings, pins, and clips, ensuring a secure fit and reliable performance. The set also comes with head and base gaskets, along with intake and exhaust gaskets, providing a complete sealing solution for optimal engine operation. An oil filter is included to help maintain engine cleanliness and longevity, making this kit ideal for rebuilds and performance enhancements.
Constructed from durable materials, the pistons and gaskets are engineered to withstand high temperatures and pressures typical of demanding engine environments. The precision components promote efficient combustion and power transfer, contributing to smoother engine operation and improved performance. Whether you’re restoring a vintage Honda or upgrading a high-performance build, this WSM kit offers a reliable, all-in-one solution to meet your needs.
Designed for ease of installation, each component is manufactured to exact specifications, ensuring compatibility and a seamless fit in your engine assembly. With a focus on quality and durability, the WSM Top End Kit is a trusted choice for mechanics and enthusiasts seeking top-tier engine components for Honda motorcycles and other 4-stroke applications.
Features:
- Includes pistons, rings, pins, and clips for a complete rebuild
- Head and base gaskets included for proper sealing
- Intake and exhaust gaskets included for optimal engine efficiency
- Oil filter included to maintain engine cleanliness
- Precision-machined 86.75 mm piston designed for Honda 4-stroke engines





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