S&S CYCLE 98" Bolt-In Big Bore Kit for '99-'06 Big Twins - Wrinkle Black Finish - 910-0481

This bolt-in big bore kit is easy to install, and requires no machining or rebalancing. Stock engine height is maintained so there are no manifold or frame fitment issues. The S&S 11 fin cylinder design closely resembles OEM shape and come prefinished – ready to install. Cylinders feature increased fin area for better heat dissipation, and the centrifugal cast, gray iron liner features 40,000 psi tensile strength for superior wear and performance. The pistons in this kit have a 10cc pop-up dome for slightly higher compression rato. This is one reason to choose and S&S 98" kit over the S&S 97" kit which has slightly less compression.

*Not compatible with S&S 79cc Super Stock® heads.

• Big Bore kit yields excellent results with stock cylinder heads
• Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
• Cylinders are constructed from premium aluminum castings with cast-in iron liners
• Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
• Made in the U.S.A.
• Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.
  
  NOTE: Not for use with S&S 79cc heads
  
  NOTE: S&S® highly recommends installing a performance cams for easier starting and better engine performance. S&S high flow cylinder heads or CNC ported stock heads will provide further horsepower gains. For an additional .2 bump in compression, order .030" thick head gaskets #900-0216 (2 pack). Clearances must be checked. These kits require tuning. When used on EFI models, S&S recommends Dynojet® Power Vision flash tuner, for more information,
  

Fitment Guide

Specs