Fits Harley M-Eight Models**

The Red Shift 548 produces excellent low-end torque, while still producing big power over the entire RPM range in modified engines.

The RS 548 is the early torque-favored companion to the extremely successful RS 552 cam, for 124 & larger engines.

Check the RS Cam Matrix for additional data or contact Zipper’s support for advice on cam selection, valve spring options, to match with your rockers and compression ratios

**Requires Special high lift Valve Springs

**Requires Adjustable or use Stock Length Pushrods

Available in chain drive only

Performance tappets recommended with any cam change

Compression Ratio Range 10.75-11.0:1