BIG BORE CRANKCASES FOR 99- UP BIG TWIN ENGINES

How big is big?  S&S TCSA crankcases can be ordered for engines with cylinder bore sizes of 4.250” to 4.800”.  In order to accommodate these very large bore sizes, the cam chest of the right side case has been offset .375”.  The offset of the cam chest requires the use of a special .375” longer pinion shaft.  In addition, crankcase deck height can be machined to the stock height of 6.000” or as high as 7.125” from the crank center line.  The additional cylinder deck height allows for more material and greater strength between the cylinder spigot bores when the cases are machined for large bore cylinders.  Like all S&S crankcases, the S&S TCSA come with all required hardware for assembly.  In addition, an S&S crankcase breather valve is included in the kit.  Call 800-841-7827 for more information and pricing.