Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage Enjoy a brand new Box

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

These are the same axles included with the 20-millimeter Hollow hubset

Box One™ Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight

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

and low rolling resistance in the straights

Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage Enjoy a brand new BoxThe 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