Description
If you’re pushing your Big Twin or Sportster beyond stock limits, you need valve train components that can handle sustained high-RPM operation without sacrificing low-end response. The JIMS Hydrosolid Tappet 1800 delivers exactly that—a hydraulic tappet below 5500 RPM for smooth, forgiving operation, then automatically transitions to solid tappet function for measurable power gains and bulletproof reliability when you’re on the pipe. Built in the USA and designed for serious riders and racers, this is the kind of intelligent engineering that separates quality upgrades from gimmicks.
- Dual-mode operation: hydraulic/solid
- Adds 3-6 horsepower
- Seamless transition at 5500 RPM
- Prevents hydraulic pump failure
- Fits Harley Big Twin 1984-1999
- Fits Sportster 1986-1990
- Requires adjustable pushrods
- USA manufactured
- Bolt-on installation
- High-performance racing applications
