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Sinz Aluminum Square Crank Arms

Sinz
$59.95
  • Black / 115mm
  • Black / 120mm
  • Black / 125mm
  • Black / 130mm
  • Black / 135mm
  • Black / 140mm
  • Black / 145mm
  • Black / 150mm
  • Black / 155mm
  • Black / 160mm
  • Black / 165mm
  • Black / 170mm
  • Black / 175mm
  • Black / 180mm
  • Silver / 170mm
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About This Product: Sinz Aluminum Square Crank Arms

Cranks on your BMX bike are what get you up to speed and the SINZ cranks help you get there in style and without braking the bank. With all sizes from 120 all the way up to 175. 110mm bolt pattern with dust covers. You can’t go wrong with these.
 
Weight- 1 lb 0.8 oz (arms only)..

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.