Starter Clutch Assembly compatible with Massimo T-BOSS 550, 550F, 550X, and 560 ATV and UTV models.: 35298.Condition: Aftermarket replacement Material: Aluminum Color: As shown in images Package includes: Starter clutch assembly as pictured Function: Transfers power from the starter motor to the engine crankshaft.When the engine is running, the starter motor drives the overspeed clutch to rotate, engaging the crankshaft to activate the engine piston.Proper maintenance supports vehicle.