Hardened Blackbone low ratio baja primary drive gear sets. The best on the market.
 
(these gear sets also fit the blackbone two speed kits for tuning options)
 
These Gear sets require the Alloy Blackbone Spur gear carrier if you dont already have this. Overall saving a huge amount of weight compared to a complete solid spur gear.
 
Fitment for all TAYLOR 62mm Clutch bells and Blackbone 54mm clutch bells