Upgrade your ride with the PROX EXHAUST VALVE/SPRING KIT from Knobtown Cycle, Kansas City’s premier motorcycle parts destination.
Product Description
EXHAUST VALVE/SPRING KIT
- Replaces the OEM valves and valve springs
- Steel, nitrided valves for increased durability and less wear under extreme conditions
- Stronger valve springs deal with the extra weight of the steel valves
- Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm
- Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals
Part Locations
| Location |
Available |
| Wisconsin (WI) |
1 |
| New York (NY) |
0 |
| Texas (TX) |
0 |
| Nevada (NV) |
3 |
| North Carolina (NC) |
0 |
| National Total |
4 |
Stock levels last updated: December 22, 2025 4:22 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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