Blue Line Starter Bendix; 139QMB, GY6 50 54.0 or Zuma "Bugeye" (2002–2011) 2-stroke

or Zuma "Bugeye" (2002–2011) 2-stroke models due to completely different axle

has an adjustable strap

Billet Aluminum Construction: Offers superior durability and a rigid feel that won't degrade over time like OEM plastic tubes

Malossi's Kevlar-reinforced construction delivers exceptional tensile strength

Sprint/Primavera (with Top Case) Royal Alloy GT150

Blue Line Starter Bendix; 139QMB, GY6 50 54.0 or Zuma "Bugeye" (2002–2011) 2-strokeThis OEM equivalent starter bendix gear replaces the worn out stock equipment on CSC go, go MAX, Bella Classic, Nitro Sport, and Pug 50 scooters, as well as bikes running 139QMB engines. Original Parts For Scooters SKU 151 41 Specifications: Number of Teeth (large tooth gear): 14 Number of Teeth (small tooth gear): 65 Outer Diameter (large tooth gear): 28. 25 Outer Diameter (small tooth gear): 40mm Shaft Length: 70. 25mm Outer Diameter (shaft): 8mm