Product Description

Weld on adjustable jackshaft brackets made in the USA out of 3/16″ steel. This is the perfect kit for a wide range of mini bikes to fine tune and easily change the gear ratio.
Laser cut out of 3/16″ steel
Must be welded onto frame
5/16″ bolts and lock nuts included
Works with 1.375″ (1 3/8″) OD bearings
Does not include bearings, jackshaft, or sprockets
Recommended add-ons (not included in kit)
Bearings:
5/8″ bearings – https://www.gopowersports.com/5-8-id-sealed-bearing-1-3-8-od-common/
3/4″ bearings – https://www.gopowersports.com/bearing-3-4-1-3-8od/
Jackshaft:
5/8″ – https://www.gopowersports.com/5-8-threaded-jackshaft/
3/4″ – https://www.gopowersports.com/3-4-jackshaft-not-threaded-19-long/
Jackshaft sprockets:
5/8″ bore / #35 chain – https://www.gopowersports.com/jackshaft-sprocket-type-b-35-5-8-bore/
5/8″ bore / #420 chain – https://www.gopowersports.com/jackshaft-sprocket-type-b-420-5-8-bore/
3/4″ bore / #35 chain – https://www.gopowersports.com/jackshaft-sprocket-type-b-35-3-4-bore/
3/4″ bore / #420 chain – https://www.gopowersports.com/jackshaft-sprocket-type-b-420-3-4-bore/
Miscellaneous hardware:
3/16″ keys – https://www.gopowersports.com/key-3-16-sq-x-1-1-4-l-3403/
5/8″ lock collar – https://www.gopowersports.com/jackshaft-lock-collar-5-8/
5/8″ jackshaft lock nut – https://www.gopowersports.com/5-8-jackshaft-lock-nut/
3/4″ lock collar – https://www.gopowersports.com/jackshaft-lock-collar-3-4/