All Bikes
All Components
All Clothing
All Protection
All Accessories
All Workshop
All Outdoors
All Nutrition & Training
Box Three Prime 9 X-Wide 9-Speed Rear Derailleur
£76.49 RRP £84.99
Save 10%
In stock at our supplier's warehouse – despatched in 4-5 days
PRODUCT CODE: XVC2312
What the stock status means
- In stock On the shelf in our own warehouse. Order before 2pm and it is despatched the same working day; bikes we build are built, safety-checked and despatched in 2-3 working days.
- In stock with our supplier Not on our shelves, but our supplier has it or it is already on its way to us. We bring it in as soon as you order, and the despatch estimate shown allows for that.
- Out of stock Neither we nor our supplier has it right now. Where a date is shown, more is on order and you can order now to secure one from that delivery.
- Stock to be confirmed Not on our shelves, and our supplier does not send us stock figures for it, so we cannot say how soon we could get one. Use "Check availability" and we will ask them and email you back.
Check availability
Check availability
Box Three Prime 9 X-Wide 9-Speed Rear Derailleur
Thanks, we’ve got your request
Seen it cheaper? Ask us to price match
Attributes
| Colour | Black |
|---|
In-stock items ordered before 2pm are dispatched the same day. Free delivery over £50.
Thirty-day returns, free from any UK address.
About Box Components
Led by BMX & downhill mountain bike racing legend Toby Henderson, BOX Components uses “design thinking” to create the finest BMX and MTB bike parts. Box Components has a combined history of 30 years of designing bike parts & 75 years racing.
Shop all Box ComponentsDetails
The Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully featured wallet-friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11-46 and 11-50 Tooth derailleurs making it one of the most versatile derailleur offerings for Prime 9.
Technology
Prime 9
Prime 9 technology is a counter-intuitive philosophy based on the less is more theory. It embraces range wihtout adding complexity. The outcome is fewer parts, reduced weight, and increased durability.
Is Prime 9 Simpler?
- Same Range With Fewer Gears
- Ease of Set-up
- Wide Compatibility
- Less Maintenance
- Don’t Worry, All Bike Shops Are Familiar With 9-Speed Platforms!
Is Prime 9 More Durable?
- Straighter Chain-line
- Unique 9-Speed Chain
- Single Shift Option (E-MTB)
- Fewer Gears (fewer shifts)
- Full Steel Cassette (all tiers)
Does Prime 9 Perform Better?
- Shifting Less Means Faster Riding
- Optimised Shift Ramps
- Consistent Gear Jumps
- Lightweight Cassette
Features
- Box's best all-rounder derailleur
- For light/medium terrain
- Limited slip clutch
- Bearing pulleys
Specification
- Process/Material:
- B-Knuckle: Die Cast / Aluminium
- P-Knuckle: Injection Molded / Glass-Nylon Composite
- Linkages: Die Cast / Aluminium
- Cage: Stamped / Aluminium
- Finish: Matt Onyx
- Speeds: 9
- Compatibility
- Platform
- E-Bike
- Non-E-Bike
- Shifter
- Box One Prime 9
- Box Two Prime 9
- Box Three Prime 9
- Derailleur Hanger: Non-Direct Mount
- Weight: 290g /10.2oz
Compatibility
- Box One Prime 9 11-50t and Also 12-50t E-Bike Cassette
- Box Two Prime 9 11-50t and Also 12-50t E-Bike Cassette
- Box Three Prime 9 11-50t and Also 12-50t E-Bike Cassette
- Box One Prime 9 126 Link Chain Dlc
- Box Two Prime 9 126 Link Chain Nickel
- Box Three Prime 9 126 Link Chain Polished
- Box One Prime 9 Shifter
- Box Two Prime 9 Shifter
- Box Three Prime 9 Shifter
