Righetti Sprocket Hubs for racing go karts by Righetti Ridolfi. Ideal for supporting the sprockets of various sizes on the rear axle of racing karts. These hubs are excellent for inboard drive or outboard drive systems, and fit a variety of axle sizes. 

• Milled aluminum design, with an integrated reinforced shoulder for supporting the sprocket. 

• Dual M6 cinch bolts included to prevent lateral slip of the hub during operation of the kart. 

• Available in several sizes to cater to different axle diameters:

• 25mm: Commonly found on Kid Karts. 
• 30mm: Common for Cadet Karts
• 40mm: Some Cadet, many Junior 2 - Full-Size Chassis
• 50mm: Full-Size Chassis - Now available in black or gold! 

• Each hub sold individually.