Evolution Industries Bump Stop – High Performance Harley Upgrade
Upgrade your drivetrain reliability with the Evolution Industries Bump Stop, engineered specifically for Harley-Davidson Big Twin models (2007 & later, including 2006 Dyna). High horsepower engines can cause the factory primary chain tensioner to over-tighten during hard acceleration, leading to excessive wear and potential drivetrain issues.
The Evolution Industries Bump Stop solves this problem by limiting the ratcheting function of the OEM tensioner, preventing over-tension while still allowing the spring mechanism to maintain proper chain adjustment.
Constructed from high-quality steel and finished with a durable black oxide coating, this bump stop is built to withstand demanding performance applications. Precision-machined grooves allow for easy fine-tuning, ensuring optimal primary chain tension for your specific setup.
Key Features
- Prevents primary chain over-tension under hard acceleration
- Designed for high horsepower Harley-Davidson builds
- Fits 2007 & later Big Twin models (also 2006 Dyna)
- Maintains proper tensioner spring function
- Made from high-quality steel for durability
- Black oxide coating for corrosion resistance
- Machined grooves for precise adjustment
