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Bottom Brackets
$149.99
With precision sealed bearings and cold-forged, aluminum CNC machined cups, the Box One™ Titanium Square Taper bottom brackets are the best option for young BMX racers and other users. It is a three-piece crank in search of performance gains and weight savings. They have hollow, custom titanium-nitride-coated titanium spindles and carbon fiber center seals, helping keep the weight down between 185 and 190 grams (well below that of other square taper bottom brackets on the market). Other features include cups that are anodized black with anodized gold inner seals and a JIS tapered spindle that comes in either 108 or 113 millimeters.
Weight Limit: 115kg (253 lbs) with limitations as per Category 2 of EN 16054:2012 Standard
Features:
- Precision Abec-5 Sealed Bearings
- Lightweight Non-Structural Carbon Components
- Extra Rigid Titanium Spindle
Compatibility:
- Box Five Square Taper Crankset
Specs:
Process: CNC-Machined Cups
Material:
- Spindle: Titanium
- Cups: Alloy
- Sleeve: Carbon Fiber
Finish: Titanium Nitride Coated
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%): 199-204 g / 7-7.2 oz
$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
$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
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