Big bore 3.875" cylinders feature cast-iron liners
Can also be used on Twin Cam 99-06 w/106" Stroker kits
Sold in pairs
Made in the U.S.A.
NOTE: S&S 3 7/8" pistons for 103" kits are machined to such close tolerances that it is not necessary to measure the piston. The low friction coating on the piston skirt makes taking measurements very difficult. Therefore, hone cylinders to nominal diameter +/- 0.0001" for correct clearance.