The Race Series Kurzhub hydraulic tapper for Harley Davidson Dyna models from 1999 to 2017 offer an innovative technology to increase the power of the engine. With a reduced total stroke of 0.115 compared to traditional rushing with a hub of 0.200, these bumps enable a higher speed. This is achieved by minimizing the valve game and the vibrations in the valve drive, which also leads to a quieter engine run.
Developed and tested under racing conditions, these starks are ideal for high -performance engines. They are compatible with the oil pumps of the Feuling HP+ or Race Series and were manufactured for their performance and durability in the USA.