Description
S&S Cycle HC Forged Piston Kit: 41-78 Harley-Davidson Big Twin OHV Models - 3-7/16" +.030" - 106-5506
Fitment: 41-78 Harley-Davidson Big Twin OHV models
These 3-7/16" +.030 standard bore high compression pistons fit 41-78 74" Harley-Davidson big twin OHV engines, producing 9:1 compression with stock unmodified cylinder heads. The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life. In the past, this could only be achieved with weaker cast pistons.
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
