* 117″ Standard Compression – Flat Top Pistons
* Note: Crankcases must be bored to accept the larger 4-1/8″ bore cylinders
* Compression Ratios:
85cc Stock Heads = 10.9:1
89cc S&S Heads = 10.5:1
91cc S&S Heads = 10.3:1
nded for use in stock crankcases of 2007-2017 Twin Cam engines.
* The stock 4-3/8″ stroke and 4-1/8″ bore result in a 117′ displacement.
* Cylinder finish is a durable wrinkle black powder coat. This cylinder kit may be used with stock or S&
ng jet kit # SS310-1251
Tech Tips:-
* Crankcases must be bored to accept the larger 4-1/8″ bore cylinders.
* Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates
* The 117″ cylinder kit will
e use of a Timken sleeve, Jim’s #JM-956. A charging system spacer for 1999–2002 model year is also required. S&S # SS310-0761
