When S&S Cycle has been building stroker cranks since the 50s, it becomes an artform after so many years. These kits have only gotten much stronger, durable, and trued to a spec others can only imagine. If you are looking for the perfect piece to your puzzle to your high performance engine then look no further.; ; 4-1/2" Stroke (114 or 128ci) No balance gear inncluded but can be installed Stronger assembly results in no need to weld crankpin Tapered wristpin connecting rods compatible with stock pistons Ideal for Gear Drive cams