Customer Favorite High Comp 170cc Big Bore Kit W/ Forged Piston & Cam - All Klx140 Cyber Monday Only [r9eVFCZU]

High-Performance 170cc Big Bore Kit for KLX140

Elevate your Kawasaki KLX140's performance with the TB Parts High Compression 170cc Big Bore Kit. This comprehensive kit includes a forged piston, camshaft, and all necessary components to transform your KLX140 into a powerhouse. Designed for 2008-2020 models, including the KLX140G, KLX140L, KLX140R, KLX140RF, and KLX140RL, this kit is the perfect upgrade for riders seeking increased power and efficiency.

Key Features and Specifications

The kit boasts a high compression forged piston, which is dome matched for the stock cylinder head, ensuring optimal performance and longevity. The 63mm aluminum cylinder, complete with a HD cast steel sleeve, provides durability and precision. The performance high lift cam, complete with new bearings, enhances valve operation and allows for more air and fuel intake, resulting in a significant power boost. Key features include:

• High Compression Forged Piston Kit: Wrist pin, ring set, and cir-clips for a complete package.
• Performance Cam: Improved valve operation for increased power and efficiency.
• 63mm Aluminum Cylinder: Durable and precision-engineered for optimal performance.

Practical Uses and Benefits

This kit is ideal for both playbike racing and trail riding, as it provides a low idle for smooth performance on the trails while delivering a significant power increase for racing. With a compression ratio of 10.9:1 when combined with the OEM cylinder head, and 12:1 with a +6 BRT stroker crank (188cc), this kit is versatile and powerful. The kit is compatible with 91+ octane pump fuel, eliminating the need for expensive race gas. Note that for 2025+ KLX140s, case boring may be required due to differences in cylinder skirt width. The installation process is straightforward for those with engine experience, but for those without, we recommend a professional technician or purchasing the shop manual for a smooth installation.