89cc Cylinder Head Kit – Black. Fits Twin Cam 2006-2017.

Product Details Features & Benefits:-* Accepts S&S or OEM pistons.* Accepts up to 640 lift cams with S&S pistons or if using with stock pistons valve reliefs must be machined in the pistons due to larger valves.* 2.000? Intake Valves & 1.605? Exhaust Valves.* Includes Lower Rocker Gasket to use with OEM rocker covers # SS90-4120* Includes 4 Head bolts – use in place of the “short” H-D head bolts # SS930-0027* Includes Decompression Release Block Off Plugs # SS90-4916-2< /P>* Sold as a Pair.Tech Tips:-* OEM 96ci = 8.9:1 Compression Ratio.* OEM 103ci = 9.3:1 Compression Ratio.* OEM 110ci = 9.8:1 Compression Ratio.* Also Fits TC Throttle-by-Wire Models 2008-2017* Not compatible with Twin-Cooled™ models (Water Cooled)Proudly Made in the USA by S&S Cycle ! MFR PART No: 106-3240 ROLLIES PART No: SS106-3240 Download Product information ( PDF)