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Box Crank 2pc Alloy Spindle Fixing Bolt-Black - 1
Box Crank 2pc Alloy Spindle Fixing Bolt-Black - 2

Box Crank 2pc Alloy Spindle Fixing Bolt-Black

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About This Product: Box Crank 2pc Alloy Spindle Fixing Bolt-Black

The Box Crank 2pc Alloy Spindle Fixing Bolt-Black is the perfect replacement compression bolt for Box Three and Box Four 2-piece cranks. Made with 6061 aluminum, its durable alloy construction makes it a reliable and sturdy choice for your bike. Easily installed with a 6mm Hex Key (sold separately).

FEATURES:

  • 6061 Aluminum
  • 6mm Hex Key Broach
  • Anodized Black

Crank Size Chart

Crank Size Chart
Inseam length Crank Length
Crank Size: Micro, Mini. Junior
Inseam length: 15 - 16 inch Crank length: 130 mm
Inseam length: 16 - 17.5 inch Crank length: 135 mm
Inseam length: 17.5 - 19 inch Crank length: 140 mm
Inseam length: 19 - 20 inch Crank length: 145 mm
Inseam length: 20 - 22 inch Crank length: 150 mm
Crank Size: Junior, Expert, Expert XL
Inseam length: 20 - 22 inch Crank length: 150 mm
Inseam length: 22 - 23 inch Crank length: 155 mm
Inseam length: 23 - 25 inch Crank length: 160 mm
Inseam length: 25 - 26 inch Crank length: 165 mm
Crank Size: Pro and Larger
Inseam length: 26 - 27 inch Crank length: 170 mm
Inseam length: 27 - 28 inch Crank length: 175 mm
Inseam length: 28 - 30 inch Crank length: 177.5 mm
Inseam length: 30 - 31 inch Crank length: 180 mm
Inseam length: 31 - 32 inch Crank length: 185 mm
Inseam length: 33+ inch Crank length: 190 mm

How To Measure Your Inseam

  1. Start with a pair of pants you already have that fit you well and lay them flat on the floor.
  2. Carefully measure the length from the crotch seam to the bottom of the leg.
  3. THIS NUMBER IS YOUR INSEAM. Use this number to help you choose your cranks.