BOX Four 8-Speed Wide Rear Derailleur
A great option for entry-level bikes and light to medium terrain, BOX Four 8-Speed Wide rear derailleur is a durable and user-friendly alternative to a traditional 3x drivetrain.




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- Simple and lightweight clutch-based 1 x 8-speed derailleur
- Includes a nonadjustable Limited Slip Clutch™ to maintain chain tension and stability
- Constructed with a stamped aluminum cage, die-cast aluminum linkages and a nylon composite knuckle for lightweight durability
- Designed for use with standard derailleur hangers (not direct mount)
Imported.
View all BOX Rear DerailleursBest Use | Mountain Biking |
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Derailleur Type | Rear |
Cage Length | Medium Cage |
Max Rear Cog Size | 42T |
Speeds | 8-speed |
Weight | 328 grams |