Box Three Prime 9 Speed Rear Derailleur

This Box Three rear mech simplifies the features found on the Prime 9 Box One and Two model’s, making for a fully-featured value for money rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction, the Box Three rear mech is compatible with 11-46 and 11-50t derailleurs making it one of the most versatile derailleur offerings for Prime 9.

Compatibility:

• Box One Prime 9 11-50T Cassette Black
• Box Two Prime 9 11-50T Cassette Black
• Box Three Prime 9 Cassette Black
• Box One Prime 9 Chain 126L DLC Black
• Box Two Prime 9 126 Link Chain Nickel
• Box Three Prime 9 126 Link Chain Polished
• Box One Prime 9 Shifter Black
• Box Two Prime 9 Shifter Black
• Box Three Prime 9 Shifter Black

FAQ:

Are Box Prime 9 derailleurs compatible with Shimano “direct mount” hangers? No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.

Is the Box Three Prime 9 Derailleur compatible with other 9 speed components? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.

Are Box Prime 9 derailleurs compatible with drop bar (road) shifters? No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.

How should I clean my Box Three Prime 9 derailleur? We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.