Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage Without these precautions

Without these precautions

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

The tooth profile and thicknesses are tailored to match the inside geometry of the unique Box Four chain

The Mid reach lever features a new design that puts it in the same reach position as the Long

Including a Limited Slip Clutch

Box Four 8 Speed Wide Rear Derailleur Size:Wide Cage Without these precautionsThe 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