2007-2014 big twin
FEATURES & BENEFITS:
S&S Stone Gray powder coat finish that matches the Granite color of a “stock” CVO engine
Easily bump-up the displacement of CVO 110 engines
Improved cylinder liner design for added rigidity and longevity
|S&S® 4-1/8" BORE CYLINDERS
| Not legal for sale or use on CA or EPA pollution controlled motorcycles
S&S 4-1/8" pistons are machined to such close tolerances that it is not necessary to measure the piston. Additionally, the low friction coating on the piston skirt of early production pistons with out micrometer window makes taking measurements very difficult. Therefore, hone cylinders to nominal diameter +/- 0.0001" for correct clearance. Current production pistons have micrometer windows in the coating on the piston skirts that allow accurate measurements to be taken. These pistons may be installed by honing cylinder to nominal diameter +/- 0.0001" or by measuring piston and honing cylinder to achieve .002" - .0025" close clearance for street applications or .0032" - .0045" loose clearance for immediate competition use.