Single side swing arm kit for BK-R1 and R2. This kit includes everything you need to convert your BK-R1 to the new swing arm system featured in the recent updated BK-R2. Manufactured from super tough 7075 alloy and milled to perfection. Compatible with BK-R1 series bikes. Rotating or changing tires is super fast too!
 
KIT INCLUDES :
Swing arm
Rear hub assembly
new updated belt tensioner