Skip to content
  • 💳 Get more for less with our low-price sale! 💳
  • 💳 Get more for less with our low-price sale! 💳
Blue Sky Cycling Outlet StoreBlue Sky Cycling Outlet Store
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Parts
    • Tires
    • BMX
    • Grips & Road Tape
    • Pedals
    • Bottom Brackets
    • Saddles
    • Brake Pads, Parts & Accessories
    • 29er
    • Tubes / Accessories
    • Chains / Chain Guides
    • Cables
    • Wheelsets
    • Handlebars
    • Headsets
    • Forks / Accessories
  • Special Offers
    • New Arrivals
    • Closeouts
    • Best $5 & Under Deals
    • Bargain Basement
    • Buy 1 Get 1 FREE!
  • Clothing
    • Socks
    • Shoes
    • Gloves
    • Protective Gear
    • Womens
    • Jerseys
    • T-Shirts
    • Shorts / Pants
    • Headwear
    • Base Layers
    • Eyewear
    • Warmers
    • Jackets
  • Accessories
    • Tools
    • Bags
    • Lights
    • Cleaners / Lubricants
    • Racks / Storage
    • Locks
    • Hydration
    • Pumps and CO2
    • Mirrors/Bells
    • Fenders
    • Helmets
    • Baskets
    • Computers / Heart Rate
    • Nutritionals
    • Smartphone Cases
Home / Special Offers / New Arrivals
Sale!
Box Components Derailleurs Box Four X-Wide Rear Derailleur 8-Speed

Box Components Derailleurs Box Four X-Wide Rear Derailleur 8-Speed

$43.19

Buy Now
SKU: derailleurs-6977929150630 Categories: Derailleurs, New Arrivals, Parts, Special Offers Tags: 8 Speed, Derailleur, Derailleurs, Rear Derailleurs, X
  • High quality products, hassle-free returns.
  • Safe and Secure Shopping
  • The quality you expect, the service you deserve.
  • Safe Shopping Guaranteed
Browse
  • Accessories
    • Bags
    • Baskets
    • Child Carriers
    • Cleaners / Lubricants
    • Computers / Heart Rate
    • Electronics
    • Fenders
    • Gift Certificates
    • Helmets
    • Hydration
    • Kickstands
    • Lights
    • Locks
    • Mirrors/Bells
    • Nutritionals
    • Pumps and CO2
    • Racks / Storage
    • Skin Care
    • Smartphone Cases
    • Tools
    • Trainers
    • Video & DVDs
    • Workstands
  • Clothing
    • Base Layers
    • Eyewear
    • Gloves
    • Headwear
    • Jackets
    • Jerseys
    • Protective Gear
    • Shoes
    • Shorts / Pants
    • Socks
    • T-Shirts
    • Warmers
    • Womens
  • Parts
    • 29er
    • Bar Ends
    • BMX
    • Bottom Brackets
    • Brake Levers
    • Brake Pads, Parts & Accessories
    • Brakes Disc
    • Brakes Rim Brakes & Calipers
    • Buy 1 Get 1 FREE
    • Cables
    • Cassettes
    • Chainrings
    • Chains / Chain Guides
    • Cleats
    • Cranks
    • Derailleurs
    • E-Bike Components
    • Forks / Accessories
    • Frames
    • Grips & Road Tape
    • Handlebars
    • Headsets
    • Hub
    • Pedals
    • Rear Shock
    • Rims
    • Saddles
    • Seatposts
    • Shifters
    • Skewers & Axles
    • Spokes / Nipples
    • Stems
    • Tires
    • Track / Fixed Gear
    • Tubes / Accessories
    • Wheelsets
  • Special Offers
    • Bargain Basement
    • Best $5 & Under Deals
    • Buy 1 Get 1 FREE!
    • Closeouts
    • New Arrivals
  • Uncategorized
  • Description
  • Reviews (0)

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
Perfect candidate for every entry-level bike that traditionally has a 3 by drive-train that is neither durable nor user friendly
For those seeking an affordable way into the world of 1x drivetrains on an otherwise entry level platform
Features Box`s Limited Slip Clutch, durable nylon composite knuckle and direct channel cable stay
Die cast linkage with stamped inner and outer cage
*Compatible with Box Four Prime 9 drivetrain only – Not compatible with other 8 speed drivetrains

FEATURES
Our 8 is Enough Derailleur
For Light/Medium Terrain
Limited Slip Clutchâ„¢
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)

SPECIFICATIONS
Color: Matte Black
Speed: 8sp
Model: Box Four
Max: 42
Compatibility: Box
Weight: 328g/11.5oz

MPN#
BX-DR4-08AWC-BK
Upc: 639266097402

Reviews

There are no reviews yet.

Be the first to review “Box Components Derailleurs Box Four X-Wide Rear Derailleur 8-Speed” Cancel reply

Related products

Sale!
Ergon GP3-L Performance Comfort Grips GripShift Bar Ends
Quick View

Bar Ends

Ergon GP3-L Performance Comfort Grips GripShift Bar Ends

$36.49
Sale!
WTB Nano Comp Tire 29" Buy 1 Get 1 FREE!WTB Nano Comp Tire 29" Buy 1 Get 1 FREE!
Quick View

29er

WTB Nano Comp Tire 29″ Buy 1 Get 1 FREE!

$37.79
Sale!
Evo Wrest Loc Ergo Lock-On Grips W/Bar EndsEvo Wrest Loc Ergo Lock-On Grips W/Bar Ends
Quick View

Bar Ends

Evo Wrest Loc Ergo Lock-On Grips W/Bar Ends

$18.19
Sale!
WTB Nano Comp Tire 26" Buy 1 Get 1 FREE!WTB Nano Comp Tire 26" Buy 1 Get 1 FREE!
Quick View

Buy 1 Get 1 FREE

WTB Nano Comp Tire 26″ Buy 1 Get 1 FREE!

$32.49
Sale!
Origin8 Ergo Sport Bar Ends
Quick View

Bar Ends

Origin8 Ergo Sport Bar Ends

$19.09
Sale!
Origin8 Comp-Lite Bar Ends LongOrigin8 Comp-Lite Bar Ends Long
Quick View

Bar Ends

Origin8 Comp-Lite Bar Ends Long

$8.39
Sale!
Ergon GP2 Performance Comfort Grips Bar Ends
Quick View

Bar Ends

Ergon GP2 Performance Comfort Grips Bar Ends

$34.49
Sale!
Bar Ends Ergon GP3 Performance Comfort Grips
Quick View

Bar Ends

Bar Ends Ergon GP3 Performance Comfort Grips

$42.88
information
Whether you're looking for road, off-road, downhill, freeride or single-speed bike parts, Blue Sky Cycling is one of the one-stop shops for all your riding
legal
  • Privacy Policy
  • Shipping & Returns
  • FAQ
  • Returns & Exchanges
  • Term and Conditions
customer service
  • My account
  • Delivery
  • Payment Method
  • Contact Us
  • About Us
Signup for Newsletter
Stay up to date with news and promotions by signing up for our newsletter

    Copyright 2026 © www.blueskycyclingus.com
    • Parts
      • Tires
      • BMX
      • Grips & Road Tape
      • Pedals
      • Bottom Brackets
      • Saddles
      • Brake Pads, Parts & Accessories
      • 29er
      • Tubes / Accessories
      • Chains / Chain Guides
      • Cables
      • Wheelsets
      • Handlebars
      • Headsets
      • Forks / Accessories
    • Special Offers
      • New Arrivals
      • Closeouts
      • Best $5 & Under Deals
      • Bargain Basement
      • Buy 1 Get 1 FREE!
    • Clothing
      • Socks
      • Shoes
      • Gloves
      • Protective Gear
      • Womens
      • Jerseys
      • T-Shirts
      • Shorts / Pants
      • Headwear
      • Base Layers
      • Eyewear
      • Warmers
      • Jackets
    • Accessories
      • Tools
      • Bags
      • Lights
      • Cleaners / Lubricants
      • Racks / Storage
      • Locks
      • Hydration
      • Pumps and CO2
      • Mirrors/Bells
      • Fenders
      • Helmets
      • Baskets
      • Computers / Heart Rate
      • Nutritionals
      • Smartphone Cases
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.