A compact 50-34T road double for square-taper bikes on 8 or 9-speed, a straightforward replacement for a worn or damaged crankset on a road or commuter bike.

Highlights

  • 50-34T steel chainrings on 110 BCD
  • Rated by Prowheel for 8 and 9-speed
  • Forged AL-6061-T6 arms, sand black
  • JIS square taper, 110.5mm spindle (Prowheel spec)
  • 43.5mm chainline
  • 170mm or 175mm

Compact gearing

The 50-34T compact pairing gives a wide spread for mixed road riding, with a small ring for climbs.

Compatibility & fit

Fits a JIS square-taper bottom bracket; Prowheel specifies a 110.5mm spindle. No bottom bracket is included. Prowheel rates the OUNCE-421C-N for 8 and 9-speed drivetrains. Fitting is a separate workshop service and isn't included. Our Marrickville workshop can fit the crankset and bottom bracket and check your chainline.

Sizes & options

LengthChainrings
170mm50-34T
175mm50-34T
Covered against manufacturing defects under Prowheel's warranty. Normal wear, crash damage and incorrect fitting are not manufacturing defects. For warranty support, return the product to Tune Cycles and we'll manage the claim with KWT Imports, Prowheel's Australian distributor.
  • 50-34T steel chainrings, 110 BCD
  • 8 and 9-speed
  • Forged AL-6061-T6 arms
  • JIS square taper, 110.5mm spindle
Crank length170mm or 175mm
Chainrings50-34T
BCD110mm
Chainline43.5mm
Speed8 / 9-speed
Crank materialForged AL-6061-T6 aluminium
Crank finishSand black
Chainring materialSteel, black
Q-factor / I-factor158 / 129mm
Bottom bracketJIS square taper, 110.5mm spindle (not included)
SKU KWT-P-PRW-OUNCE
Brand PROWHEEL
Shipping Weight 0.9000kg
Shipping Width 0.250m
Shipping Height 0.100m
Shipping Length 0.400m