101 Octane Starter Motor for Morini 2-Stroke

101 Octane starter motor for Morini AD50 50cc 2-stroke engines commonly found on Aprilia,  Derbi, Hyosung, and Suzuki Street Scooters.Fits the following models:  Aprilia Mojito 50, SR 50, Scarabeo 50 Derbi Atlantis 50, Hunter 50, Predator 50 Hyosung SB 50, SD 50, SF 50 Suzuki Address 50, Street Magic Benelli 491ST, Pepe 50 Italjet Formula 50, Torpedo 50, Volicefero 50 Made in Taiwan! Bolt Hole Spacing: 57mm Shaft Length: 17mm Shaft Diameter: 7.5mm Diameter (near o-ring): 20mm Number of Splines: 10 Made in Taiwan