The Titan Mini Cup Clutch is designed for GX270 & GX390 applications including karting, Mini-Bikes, & Mini-Cup Series of Racing. 1" counterbore for up to 18HP engines. 

This computer-designed centrifugal clutch is the ultimate drum clutch for GX390s 13/15hp Chinese OHVs

It features:

• Machined drum with interchangable sprockets for the ultimate in strength and alignment
• Unique hub and shoe design for maximum power transmission
• A shoe/spring/hub cartridge for quick easy set up changes
• 4-cycle - 1" counterbore - #35 chain

This Clutch is special order, please allow 2 - 3 weeks until shipped.