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) Balance gear installed Stronger assembly results in no need to weld crankpin Tapered wristpin connecting rods compatible with stock pistons Ideal for Gear Drive cams