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Crupi Rhythm Pro Cranks - 1
Crupi Rhythm Pro Cranks - 2
Crupi Rhythm Pro Cranks - 3

Crupi Rhythm Pro Cranks

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About This Product: Crupi Rhythm Pro Cranks

CRUPI's alternative to the DXR crank!  2-pc crankset with aluminum crank arms (spindle is attached so the drive crank arm).  This crank is designed to be used with an external bottom bracket - the sealed bearings sit outside of the frame to allow for bigger bearings for a smoother spin.

Here are the specs and details about this crank:

-Crank arm pinch bolts allow ease of crank removal, no special tools needed

-104BCD for use with a 4-bolt chainring 
-Reinforced steel pedal inserts for maximum
-Available in silver, black and white!

-There is no rider weight limit for these cranks
WEIGHT: 1lb 15.2oz  (175mm)


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.