• Jackshaft assembly kit with 420 chain 42 links, mini bike chain tensioner and 420 chian jackshaft sprocket is a critical component of your vehicle's powertrain system, helping to ensure that power is transferred smoothly and efficiently.

NOTE:

• Diameter of jackshaft's shaft is 17mm / 0.669in, thread diameter is 15.87mm (5/8"), need to use 17mm jackshaft sprocket (this kit is equipped with 17mm sprocket).