Upgrade your engine’s performance with TBparts Heavy Duty Valve Springs. Designed to handle higher RPMs and increased lift from performance camshafts, these springs are the ideal solution for high-output builds. Whether you’re installing a big bore kit or racing at the limit, our HD springs help prevent valve float and ensure consistent valve timing under extreme conditions. Whether you’re building a race-ready KLX140 or just want more power with peace of mind, these heavy duty valve springs are the perfect match. Run harder, rev higher, and stay in control with TBparts HD Valve Springs.
Key Features:
- Heavy-duty construction for increased 30% spring pressure
- Prevents valve float at high RPMs
- Ideal for performance cams and big bore kits
- Direct replacement – no modifications required
- Durable, long-lasting materials for reliable performance
- Designed specifically for the KLX140 engine
- Fits all years Kawasaki KLX140
Note: See main product pictures for important install details
