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Parts

$79.99 - $99.99
All Box handlebars are engineered and crafted using our Oversized Technology. Handlebars have a dual purpose as they contribute to both steering and pedaling stiffness. By strategically varying wall thicknesses and tube diameters, we have moved material from 3 low-stress areas to zones of high load. This has greatly minimized twists and contributed to responsiveness. Concurrently we have increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar deflection and the consequences can lead to poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model handlebar is tailored for medium-sized racers so we decided to use hardened aluminum alloy to reduce unnecessary mass. FEATURES - Oversized™ Technology - Hardened Aluminum - To Reduce Unnecessary Mass for Medium-Sized Racers - Massive Clamp Interface for Steering Stiffness - Variable Wall Thickness to Reduce Weight
$79.99
All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: In this particular model stem we’ve tailored the Oversized strategy to favor utility and access. The geometry has been altered to allow for easy handlebar removal while at the same time scavenging material from low stress zones. Ideal for those who don’t want to compromise on user experience to gain performance. These stems are engineered for the larger-sized racers.
$79.99
Tested extensively by the Dutch National BMX Team, Damien Godet, Kory Cook, and numerous other elite racers, Box Two™ Freewheels combine durability with lightning-fast engagement. They feature nine, super durable pawls and are available in one of three choices -- 16, 17, or 18 teeth. To install, use the Park Tools™ FR-6 or other installation tool designed for single-speed freewheels with four notches that are approximately 32mm across measured inside to inside and 40mm outside to outside. FEATURES - 9 Pawls 108 [3.3°] Points of Fast Engagement
$89.99
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
Featuring a JIS square taper standard, our oversized bottom bracket interface showcases a step-down shape specific to the crank arm-length meeting at the pedal boss. Unlike alternative options, no two lengths are the same. Our durable cold-forged cranksets are available in sizes from 135mm through 170mm and employ a 5-bolt 110 BCD chainring pattern. All JIS square taper standard cranks are compatible with all BSA European-style square taper bottom brackets. FEATURES - Oversized Bottom Bracket Interface - Durable Cold-Forged Construction - JIS Square Taper Design COMPATIBILITY - Box One Bottom Bracket Square-Taper Titanium/Carbon - Box Two Bottom Bracket Square-Taper Chromoly - Box Three Square Taper Steel Bottom Bracket - Box One Chromoly Chainring Bolts - Box One 7075 Alloy Chainring Bolts
$99.99
There is more to our carbon headsets than their striking good looks. From top to bottom, Box One™ Carbon Headsets was designed to perform. Each unit features a custom CNC-machined aluminum compression cap in the shape of the Box logo with cut-outs to reduce weight. At the center of the compression cap is an anodized aluminum bolt that threads into a gold anodized aluminum expander plug. This expander eliminates the need for a star nut and works with all 1-1/8-inch steerer tubes—even carbon fiber steerer tubes. The bearing cover is crafted from carbon fiber, which not only adds style but helps shave weight. At the heart of the headset are two super-smooth, titanium-nitride coated, sealed, 45×45 bearings. The titanium coating results in a low friction coefficient, increased corrosion resistance, and smoother rolling bearings. A split crown race makes installation and removal from forks super easy. FEATURES - Durable Titanium-Nitride Coated Sealed Bearings - Lightweight Non-Structural Carbon Components - Reusable Expander Wedge SPECIFICATIONS - Bearing Angle: 45° x 45° - Compression Cap: CNC-Machined - Bearing Cover: Carbon Fiber - Expansion Plug: Aluminum - Compression Cap: Aluminum - Finish: TiN Bearings - IS 42/28.6 - IS 42/28.6 - Weight 94 g / 3.3 oz
$103.99 - $136.98
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.
$349.99
All Box One forks are engineered and crafted using our Oversized Technology. These forks are the most important component in the quest for bike control. We’ve moved carbon from areas of low stress to areas that handle high loads. Those muscular shoulders aren’t just for looks as they are integral to achieving superior steering stiffness. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model fork is tailored for larger-sized racers. It also takes our application of Oversized Technology one step further as it includes a tougher 1-1/8 inch chromoly steerer tube and stiffer 20mm through-axle cold-forged dropouts. Weight Limit: 115kg (253 lbs) with limitations per Category 2 of EN 16054:2012 Standard. FEATURES - Oversized Technology™ - Chromoly Steel Steerer Tube to Accommodate Larger-Sized Racers - 20mm Through Axle to Increase Responsiveness - Internal Butterfly for Added Durability at Steerer Tube and Fork Crown Interface
$379.99
All Box One forks are engineered and crafted using our Oversized Technology. These forks are the single most important component in the quest for bike control. We’ve moved carbon from areas of low stress to areas that handle high loads. Those muscular shoulders aren’t just for looks as they are integral to achieving superior steering stiffness. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency. Key differences: This particular model fork pushes our Oversized Technology to the extreme as it includes the 1.5 to 1-1/8 inch tapered 7000 series aluminum steerer tube and stiffer 20mm through-axle cold-forged dropouts. Say goodbye to deflection. Weight Limit: 115kg (253 lbs) with limitations as per Category 2 of EN 16054:2012 Standard FEATURES - Oversized Technology™ - Tapered Steerer Tube to Reduce Deflection - 20mm Through Axle to Increase Responsiveness - Internal Butterfly for Added Durability at Steerer Tube and Fork Crown Interface
$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
$21.99
The Jonesin' pedal is the little brother of the Safari pedal, designed using the same basic principles of extra hexagonal studs and a true dual concave DX style platform but with a slimmer body for a closer to the axle feel.
$29.99 - $39.99
BSD Seatposts
$22.99
Black Label's Pivotal Seatpost keeps things light and simple. It's short, made of lightweight and tough nylon, and accepts pivotal seats (sold separately). - Weight: 95g
This BMX quill stem combines a steel rod with an alloy top. The 4-bolt top clamp securely fastens handlebars.
$5.59 - $10.99
- Best seller - Shock Absorbing Design - Ridged Turbo Shape - Fits 7/8" Bars - Style: with Flange - Length: 110mm
$7.99
- Bar end plugs - Sold in pairs
$8.99
- Alloy 1-1/8" seatpost clamp - Single bolt
$9.99
- A comfortable and timeless ribbed style grip suitable for BMX and cruiser use - High flange BMX style design with black press-in end plugs - Length: 145mm
$12.99 - $15.99
- A comfortable and timeless ribbed style grip suitable for BMX, MTB, and cruiser use with included black press-in end caps - Good all-around size for everyday use - Durable Kraton rubber construction - Length: 145mm
$14.99 - $19.99
- Bottom bracket for one-piece crank - Sealed mechanism - 24 TPI - Spindle Type: One piece - Cup Material: Steel - Weight: 310-315g - Cup Type: Press Fit - Cup OD/Bearing OD: 51mm
$14.99
- Upper cables measured from brake lever to detangler top plate - Lower cables are measured from detangler to cable stop/London mod - Includes adjusters compatible with most detangler styles - Use: Upper - Length: 11 - 12.5" - Diameter: 1.5mm
$16.39 - $39.99
- Hinged 2 finger lever - Forged alloy construction - 2 piece hinged clamp - Compatible with caliper and U-brake applications - Fits 22.2mm (7/8") handlebars - 166g pair
$19.99 - $24.99
- 4130 chromoly axle pegs with 3 position anti-rotation set screw - Designed for use with 14mm or 3/8" axles (with adapter) - 4130 chromoly offers a durable, long lasting peg with a smooth grind - 3 set screw positions extend the life the of the peg - Axle: 14mm / 3/8" - Diameter: 35mm - Material: Chromoly - Sold in pairs
$19.99 - $26.99
- Super hardened nylon construction - 40mm diameter, 100mm length - Special insert fits 3/8" or 14mm axles - 90g (pair)
$19.99
- Fits 3-piece 22mm BMX cranks - 2mm 6061 aluminum core - Includes adapter for 19mm spindles - Teeth: 25T - Chain Compatibility: Singlespeed - Tooth Type: Standard
$19.99
- Precise fit and smooth function - Great cable travel range - Shielded cables for durability - Includes upper and lower cables - Use: 1-1/8" BMX
$22.99
- Melt forged aluminum construction - Coiled spring tension adjust
$22.99
- Forged alloy construction - Double bolt centering design - Oversize 6mm hex bolts
$29.99
- CNC machined 6061-T6 alloy - Fits 1-piece and 3-piece BMX cranks - 23.8mm hole for 1-piece cranks with shims for 19/22mm 3-piece cranks included - Hard anodized coating - Unique, 1/8" quiet drive technology - Mount Compatibility: 1-piece/3-piece - Chain Compatibility: 1/2" x 1/8"
$29.99
- PIVOTAL compatible - Polished stainless steel shaft - Durable and weather resistant finish - Reinforced shaft design for strength - Outer Diameter: 25.4mm - Length: 250mm - Setback: 0mm