This is the Replacement Connecting Rod for the OS Max 60FP (RN), 65LA, 61FX, / 91FX, and 91SX. This part connects the crankshaft to the piston. / / FEATURES: Machined aluminum / Pre-installed brass bushings / / INCLUDES: One Connecting Rod / / REQUIRES: Assembly into engine. / / SPECS: Length: 53.2mm (2.10") / Width: 4.6mm (0.18") / / cmc 01/08/02 / ir/kh