Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage and low rolling resistance in

and low rolling resistance in the straights

Enjoy a brand new Box crew neck youth track shirt with a fit

you can also use your custom number plate sticker so you can always find your bike stand in the pits

the Box Four shifters take advantage of the "less is more" theme and exploit durability

Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage and low rolling resistance inThe Box Four Rear Derailleur is the base of Prime 9 Technology that offers an affordable clutch based 1 by 8 speed derailleur that is simple and light; this makes it a perfect candidate for every entry level bike that traditionally has a 3 by drive train that is neither durable nor user friendly. SUPPORT MATERIAL Prime 9 Technology View Prime 9 Drivetrain Compatibility Manual How is the Ebike variant different? View Prime 9 Comparison Chart View Prime