This TB parts Maintenance kit is the smartest way to upgrade or rebuild your KLX140. Designed for riders installing a big bore or stroker crank, or rebuilding the bottom end, this kit bundles the most critical upgrades into one high-value package—saving time and money over buying parts individually.
Includes The Following:
Lightweight Titanium Engine Cover Bolt Kit
- 14-piece titanium bolt set
- Allen socket head design
- Lightweight, corrosion resistant
- Replaces OEM engine cover hardware
Heavy-Duty Starter Motor
- Built for high-compression and big bore engines
- Manufactured in Japan
- Direct bolt-on replacement
- Works great on stock engines
Cam Bolt & Pin Kit
- Reverse-thread cam bolt
- Includes cam pin
- Direct replacement for all KLX140 models
Center Case Bearing Kit
- Complete set of NTN transmission and shift drum bearings
- Includes replacement dowel pins and screws
- Ideal when splitting cases
HD Kevlar Clutch Kit
- Kevlar friction plates
- Dimpled steel plates
- 15% stiffer springs
- Deletes OEM jitter components
Oil Filter
- Essential maintenance item
- Helps extend engine life
170cc High-Compression Forged Big Bore Kit
- Forged piston with rings, pin, and clips
- 63mm aluminum cylinder with steel sleeve
- Safe with 91+ octane pump fuel
- Compatible with stroker crank builds
Features:
This kit covers the most common wear and failure points when building power or refreshing a high-hour KLX140. The HD starter, clutch, bearings, and hardware are designed to handle increased compression and displacement, making it ideal for stroker installs or full bottom-end rebuilds.
