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

$68.99 Sale Save
2 reviews
Size Wide Cage
Color Black

Only 0 left in stock

SKUBX-DR4-08AWC-BK

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. 


    References:

    Our 8 is Enough Derailleur
    For Light/Medium Terrain
    Limited Slip Clutch™
    Bearing Pulleys

    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

    Process/Material
    · B-Knuckle: Die Cast / Aluminum
    · P-Knuckle: Injection Molded / Glass-Nylon Composite
    · Linkages: Die Cast / Aluminum
    · Cage: Stamped / Aluminum
    Finish: Matte Onyx
    Speeds: 9
    Cable: Box One Slick Coated
    Compatibility
    · Platform
    · Ebike
    · Non-Ebike
    · Shifter
    · Box Two Prime 9
    · Box Three Prime 9
    · Derailleur Hanger: Non-Direct Mount
    Weight: 328g/11.5oz

    Q: Are Box Prime 9 derailleurs compatible with Shimano "direct mount" hangers?
    A: No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.

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

    Q: Are Box Prime 9 derailleurs compatible with drop bar (road) shifters?
    A: 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.

    Q: How should I clean my Box Three Prime 9 derailleur?
    A: 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.

    Q: How do I make adjustments to the derailleur?
    Please see our installation video at
    A: https://boxcomponents.com/collections/support

    Q: Can I adjust the Limited Slip Clutch on my derailleur?
    A: No, the clutch system on this derailleur is not adjustable.

    Q: Can I install this on my bike that uses a b-link for my current derailleur?
    A: Yes! All you need to do is remove your old derailleur and the b-link leaving the standard hanger attached to your bike frame. You can now mount your Box Components derailleur directly to the hanger on your frame.

    Q: Can I install this on my bike that currently has a direct mount hanger?
    A: Possibly, you will need to see if your frame manufacturer or a third party like wheelsMFG offers a standard mount hanger for your frame.

    Q: Can I install this on my bike that uses a b-link for my current derailleur?
    A: Yes! All you need to do is remove your old derailleur and the b-link leaving the standard hanger attached to your bike frame. You can now mount your Box Components derailleur directly to the hanger on your frame.

    Q: Can I install this on my bike that currently has a direct mount hanger?
    A: Possibly, you will need to see if your frame manufacturer or a third party like wheelsMFG offers a standard mount hanger for your frame.

    Customer Reviews
    5.0 Based on 2 Reviews
    5 ★
    100% 
    2
    4 ★
    0% 
    0
    3 ★
    0% 
    0
    2 ★
    0% 
    0
    1 ★
    0% 
    0
    Write a Review

    Thank you for submitting a review!

    Your input is very much appreciated. Share it with your friends so they can enjoy it too!

    Filter Reviews:
    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!