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- Derailleurs (170)
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Drivetrain

$54.02
- Forged and CNC-machined aluminum with precision sealed bearings for 2-pc cranks and 24mm spindles - BSA 1.37"x24T for 68/73mm shells

$15.99
The Box Four chain employs an 8-speed platform in a similar strategy to the Prime 9 but at a great price point. The chain is polished and then chemically treated to achieve corrosion resistance. We engineered the inner link spacing to be a little tighter than other 8-speed chains and is optimized for use with our Box Four Wide/Narrow Chainring.

$20.99
The Box Three BMX chain is polished and then chemically treated to achieve corrosion resistance. All Box Three chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. Our unique inner link spacing is engineered to grab those modern wide/narrow chainrings. They are compatible with BMX 3/32" and 1/8" chainrings and cogs which fits most retro-modern 29 inch BMX bikes and smaller bikes.

$25.99
- Heat treated allow steel solid links with solid pins
- Compatible with SRAM, Shimano, and Box 11 speed drivetrains
- Also compatible with Box's 7 speed downhill specific drivetrain

$29.99
Box One Single-Speed Aluminum Cogs are 7075-T6 aluminum alloy. It's designed to fit Shimano compatible cassette hubs and has a 5mm wide inner base, giving a more solid interface with the cassette body. The alloy cogs are anodized black with laser-etched graphics.
FEATURES
- Shimano Compatible Driver
- 7075-T6 Alloy
- 3/32" or 1/8" Chain Compatible
- Lightweight
SPECIFICATIONS
- Material: 7075-T6 Aluminum
- Process: Laser-etched logos
Weight
- 13t: 8 grams / 0.3 ounces
- 14t: 11 grams / 0.4 ounces
- 15t: 13 grams / 0.5 ounces
- 16t: 14 grams / 0.8 ounces
- 17t: 16 grams / 0.6 ounces
- 18t: 18 grams / 0.65 ounces

$44.99
Box Two Square Taper Chromoly Bottom Brackets are the best option for young BMX racers and other users of three-piece cranks in search of an affordable, high-performance square taper bottom bracket. Each bottom bracket is hand-assembled with a Chromoly spindle, sealed bearings, forged and CNC-machined alloy cups, and a composite center spacer/seal.
Features:
- Precision Abec-5 Sealed Bearings
Compatibility:
- Box Five Square Taper Crankset
Specs:
- Process: CNC-Machined Cups
Material:
- Spindle: Chromoly
- Cups - Alloy
- Sleeve - ABS Plastic
- Finish: Nickel Coating
- Spindle Type: JIS Square Taper
- Spindle Length: 108mm or 113mm
- Shell Width: 68mm
- Thread: 1.37" x 24 TPI
- Compatibility: BSA Threaded
- Weight [108-113] (+/- 5%): 272 g / 9.6 oz

$51.99
The Box Four cassette adapts our Prime 9 philosophy of durability, simplicity, and reliability at a great price point. All cogs are stamped from steel, given our durable black coating and then the larger cogs are pinned to each other with spacers for easy installation.
- Compatible with HG freehub bodies
- Steel stamped cogs
- No spiders
- Wide ratio and consistent progression
- ED black protection

$54.99
Made in the US from 6061-T6 aluminum alloy, Box Two Chainrings are round and true. They fit 104 BCD four-bolt cranks and are available in black anodized with laser-etched graphics from 38 to 45-teeth.

$59.99
Box Two 24mm External bottom brackets feature cold-forged, CNC-machined alloy cups, dual-labyrinth bearing covers, and precision sealed bearings. They are the perfect match to Box Three, Four cranks, and the ultimate upgrade to the budget BBs sold with most cranksets. Box Two, 24mm External Bottom Brackets, are designed to fit all 24-millimeter crank spindles and frames with 68 or 73 x BC 1.37-inch bottom bracket shells.
Features:
- Stable Outboard Bearing Position
- Precision Abec-5 Sealed Bearings
Compatibility:
- Compatibility: Box Three, Box Four, Shimano HollowTech II, RaceFace X-Type
- Material: 6061-T6 Aluminum
- Shell Width: 68mm/73mm
- Spindle Type: 24mm
- Thread: 1.37 Inch x 24 TPI
- Weight: 105 grams / 3.7 ounces
Specs:
Process: CNC-Machined Cups
Material:
- Cups: Alloy
- Sleeve - ABS Plastic
Finish: Anodized
Spindle Type: 24mm
Shell Width: 68/73mm
Thread: 1.37 Inch x 24 TPI (English)
Compatibility:
- Shell: BSA (Euro) Threaded
- Spindle: Box Three, Box Four, Shimano HollowTech II, RaceFace X-Type
Weight (+/- 5%): 105 g / 3.7 oz

$64.99
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.

$72.99 - $77.99
The Box Three Prime 9 cassette is a great all-around cassette option. All cogs are stamped from steel and subsequently, the larger ones are pinned to alloy spiders. It also features weight-reducing holes on the cogs.
- The Box Three Prime 9 offers ultra-wide ratio with consistent progressions
- Prime 9 technology offers the same range as a 12-speed drivetrain, with fewer gears to shift through
- Fewer parts, reduced weight, and increased durability
- Cogs pinned to lightweight spiders
- Constructed using a standard freehub body (HG)
- Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed
- Drivetrain Speeds: 9
- Designed for ebike: Yes
- Color: ED Black

$79.99
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 11-50t derailleurs making it one of the most versatile derailleur offerings for Prime 9.

$99.99
The Hex Lab 3/32" Titanium Cogs are CNC-machined from bulletproof titanium. They are designed to fit Shimano compatible cassette hubs and have a 5mm wide inner base, giving a more solid interface with the cassette body.
Key differences: The Hex Lab 3/32" CNC Titanium Cogs are engineered and crafted for durability without compromising weight. They offer the strength and wear resistance of steel and are lighter than aluminum. As a result, they yield better shock absorption than the Box One Aluminum or Box One Chromoly Cogs. They are available in an oil slick or natural finish.
FEATURES
- Shimano Compatible Driver
- Ti-6Al4V Heat-Treated to HRC35
- 3/32" or 1/8" Chain Compatible
- Lightweight + Durable
SPECIFICATIONS
- 13 tooth: 13 grams (.45 oz)
- 14 tooth: 16 grams (.55 oz)
- 15 tooth: 19 grams (.67 oz)
- 16 tooth: 22 grams (.77 oz)
- 17 tooth: 24 g (.85 oz)
- 18 tooth: 28 g (1.00 oz)

$103.99
The BOX Two Prime 9 Cassette delivers long service life and extra range. All cogs are stamped from steel and the larger ones are pinned to alloy spiders.
- Cogs pinned to lightweight spiders
- Ultra-wide ratio with consistent progression
- Prime 9 technology
- Compatible with HG freehub bodies
- 12 – 50T: Rated for eBike use

$134.99
The Box Two Prime 9 Rear Derailleur is very similar to the Box One version however, to be more wallet friendly, it offers a non adjustable Tri-Pack Clutch, bushing pulleys and some muted finishes. Box Two rear derailleurs are still optimized for 11-50t cassettes and offer durability and performance for the most demanding terrain, just at lower price!

$184.99
The Box One Prime 9 Rear Derailleur takes the advantages of our legacy 9-speed drive-train but adds the advancements of a modern 1 by; a fully adjustable Tri-Pack Clutch, and an x-wide cage optimized for an 11-50T cassette. Forged construction steps up the durability and performance to an unparalleled level. Suited for the most demanding terrain.

$399.99
The Box Two M30-P crankset is a slightly less acute embodiment of our Oversized technology for cranksets. We squeeze in a show-stopping Praxis™ made 30mm that’s been cold-forged from 7075 T6 aluminum and then painstakingly ground to precision. You’ll be relieved to know this will all fit in a European bottom bracket. The crank arms and spider are poached from the Box One M35 model and as a result, you get all that hollow-forged generosity to help you put that power down. These cranks are engineered for the larger-sized racers.
- Oversized Technology™ Hollow Forged Design
- Oversized 30mm Alloy Spindle
- Self-Extracting Crank Bolt System
- 4-bolt 104 BCD Spider with Flex-Resistant Ring
- External BSA 30mm BB Included
- Weight: 28.6oz
- Drive Side Compatibility: Right Hand Drive
- Crankset Style: 2-Piece
- BB Style: Euro
- Chainring BCD: 104
- BB Included: Yes

$419.99
- Stiff oversized hollow-forged aluminum arms for frames with PF30 or BB30 BB shell
- Innovative Praxis 35mm external bottom bracket and oversize aluminum spindle
- Includes an aluminum BB30/PF30 bottom bracket with precision sealed bearings

$27.95
- Adapters press directly into specific PF30, BB30, BB86 or BBright frames and allow the use of standard Ultra-Torque (UT) crank sets and EPS components
- Updated design increases surface area contact with the frame's bottom bracket, reducing the possibility of noise from frames with slight imperfections
- Ultra-Torque OS Fit BB-cup tool is required for adapter installation

$33.95
Campagnolo ProTech bottom brackets feature a patented external sealing ring design that protects a strong, resilient fiberglass-charged polyamide central tube from the harmful ingress of water, mud and grit.
- Designed specifically for gravel riding and racing to protect against water, mud & grit

$42.95
Record chains represent Campagnolo's highest quality and performance chains and are available in 9, 10 and 11 speed versions.
- Chrome-Nickel-PTFE finish
- Designed specifically for use with Campagnolo 8 and 9 speed drivetrains only
- Links (links): 114
- Color: Silver
- Width: 6.8 mm
- Drivetrain Speeds: 9
- Chain Connection Type: Pressed Pin
- Half Link Chain: No
- Weight: 300 grams

$45.95
Price point 11 Speed chain has a wider link design for increased shifting performance and reduced noise, and slotted links for reduced weight.
- Designed specifically for use with Campagnolo 11 speed drivetrains only

$46.00
The Campagnolo C13 EKAR Chain was developed specifically for the EKAR 1x13-speed gravel system.
- Wide-narrow design allows for efficient drive, smooth shifts and high security
- The narrow profile is lightweight, strong, and efficient
- Strong, durable, links feature different grades of steel and coatings for strength and to withstand wear
- Unique ultrasound bath lubrication impregnation system for long chain life
- Uses a classic pin chain connector
Specifications:
- Links: 118
- Chain Connection Type: Pressed Pin
- Drivetrain Speeds: 13
- Weight: 242g

$46.45
Ultra-Link Chains designed to maximize performance with Campagnolo drivetrains, while increasing durability and power transmission.
- Delivers extremely high performance levels and durability over time
- Design is optimized to perform with teeth on sprockets and crowns of Chorus drivetrain components
- Solid pins are aligned with the external surface for smoothness and precision
- 5.15mm width is designed to produce faster and lighter shifting
Specifications:
- Links: 110
- Chain Connection Type: Pressed Pin
- Half Link Chain: No
- Drivetrain Speeds: 12
- Weight: 241g

$46.95
Campagnolo's Veloce 10-Speed chain boasts an anti-friction coating for a smooth, quiet drivetrain and outstanding durability. It's the perfect match for your Campy-endowed road machine.

$47.95
The Campagnolo C13 EKAR Chain was developed specifically for the EKAR 1x13-speed gravel system.
- Wide-narrow design allows for efficient drive, smooth shifts and high security
- The narrow profile is lightweight, strong, and efficient
- Strong, durable, links feature different grades of steel and coatings for strength and to withstand wear
- Unique ultrasound bath lubrication impregnation system for long chain life
- C-Link allows for easy removal and cleaning
Specifications:
- Links: 117
- Chain Connection Type: Quick Link
- Drivetrain Speeds: 13
- Weight: 242g
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