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Box Four 8 Speed Wide Rear Derailleur Black - boxcomponents
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®
Box Four 8 Speed Wide Rear Derailleur Black - Box®

Box Four 8 Speed Wide Rear Derailleur Black

Regular price
$64.99
Regular price
Sale price
$64.99
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BX-DR4-08AWC-BK

DESCRIPTION

The 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. 

FEATURES
  • Our 8 is Enough Derailleur
  • For Light/Medium Terrain
  • Limited Slip Clutch™
  • Bearing Pulleys
  • Nylon Composite Knuckle
  • Direct Channel Cable Stay
  • Die-Cast Linkages
  • Stamped Inner and Outer Cage
  • Compatible with Standard Derailleur Hangers (Non Direct-Mount)

IMPORTANT NOTES

COMPATIBILITY

  • Box Four 8 Speed Shifter Black
  • Box Four 8 Speed 116 Link Chain Natural
  • Box Four 8 Speed 11-42T  and also 12-42T eBike Cassette Black
  • Box Four 8 speed Wide/Narrow Chainring 104BCD 32T Black
FAQ

No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.

No, traditional 8 speed systems use a Cable Pull that is not compatible with Prime 9.

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.

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.

Please see our installation video at https://boxcomponents.com/collections/support

SPECIFICATIONS
Material Aluminum, Glass Fiber / Nylon Composite, Steel
Finish Matte Black
Weight 328g/11.5oz



Customer Reviews
3.7 Based on 3 Reviews
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VH
09/08/2021
Victor H.
United States United States

Box Four shift lever and derailleur

It has held up much better then the entry level 8-speed Shimano I replaced with it.

G
05/13/2021
Gabriel
Canada Canada

Shifts like a dream

Running this on a 11-28t cassette and it works perfectly. Shifts great under load too.

DM
04/06/2021
Desmond M.
Canada Canada

Absolutely OUTSTANDING Product!

Im over-joyous about my purchase of this great Mech! My drive train has literally never rolled better or as quiet! Its a perfect combination for a 1x8 Drive train setup, Currently running this plus the matching shifter on my Downhill Bike! Zero issues and PERFECT SHIFTING! I HIGHLY recommend this for all your 1x8 needs!