Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage These are the same axles

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

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

and low rolling resistance in the straights

There are also the "Compact" variations that are fitted out with upright shift levers

Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage These are the same axlesThe 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