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Bombshell Ratchet 2-Piece Cranks

  • 135mm / Gold
  • 145mm / Gold
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About This Product: Bombshell Ratchet 2-Piece Cranks

Bombshell Ratchet is next generation of US-made, fully CNC'd crankset. Ratchet cranks are fully redesigned and improved to deliver better ride overall. Fatigue testing of AL 7075 - T6 spindle exceeds strength of comparable crmo product while responding better to force applied to crank arms. Steel pedal insert ( Pro version - 175mm and 180mm only ) is newly secured in its position with pin providing still position during pedal exchange. Spider locking system increases overall contact area between spindle and arm adding required stiffness to transfer the power to the rear wheel. The fact that the cranks are machined in-house gave bombshell a chance to increase strength, adding more material where needed while keeping the weight down to a minimum. Feel the difference. Ride the Ratchet

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.

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