US$ 142.50
CNC billet 60 series aluminum
50% lighter and much stronger than the stock
38lbs-60lbs Progressive spring: 176lb-265lb rider weight (realistically 150-225lb)
They have proven to be the toughest aluminum sprockets we have ever tested
Axle end-bolts can be found here
Primary Drive RK MXU Sealed Enduro 420 Replacement Chain | Surron Ultra Bee Ramped Racing CNC billet 60 series aluminumReplacement RK MXU Chain For All DirtyBike Ultra Bee 420 Primary Chain Drive Systems Super high quality sealed MXU chain is the best for enduro riding for a long lasting drive system. Direct replacement for all DirtyBike Ultra Bee 420 primary belt to chain conversion kits.
US$ 142.50
US$ 174.50
US$ 550.00
US$ 82.80
US$ 10.28
US$ 30.00