Skip to content

CJ Ackley Machine Company Narrow Crank Arm Shorteners Pair

SKU 210000015414
Original price $139.00 - Original price $139.00
Original price $139.00
$139.00 - $139.00
Current price $139.00

Reduce knee strain and increase cadence. Bolts into crankarm and pinches arm with adjustable cams.  Great for narrow cranks and stationary exercise bikes (may need a 1/2" adapter for stationary exercise bikes).  (Click here for normal CJ Ackley Crank Arms.)

Product Notes:

  • Shortens crankarms by 24, 41, 58 and 75mm.
  • Adjustable cams to fit a variety of narrow crankarm widths from 17.5 to 28.5mm.
  • Compatible with 9/16" pedal threads.
  • Sold as a pair - left and right side.
  • Comes complete with a 6mm allen wrench and a tube of Loctite 242 to install the shorteners on your crank arms.
  • Pedal wrench not included.
  • 210 lb weight limit on upright bikes.  Do not stand on pedals continuously.
3 in stock, ready to be shipped
Have a question about this product?