A proper road double in a junior 140mm length, so young road and gravel riders get gearing and crank length that suit their size.

Highlights

  • 48-32T chainrings on 110 / 80 BCD
  • Alloy 48T outer, steel 32T inner
  • Rated by Prowheel for 9 and 10-speed
  • Forged AL-6061-T6 arms, sand black
  • JIS square taper, 116mm spindle (Prowheel spec)
  • 140mm arms

Sized for young riders

Prowheel makes the junior RPL-521 in 140mm, 152mm and 160mm, pairing short arms with a 48-32T sub-compact that keeps climbs manageable.

Compatibility & fit

Fits a JIS square-taper bottom bracket; Prowheel specifies a 116mm spindle and a 44mm chainline. No bottom bracket is included. Prowheel rates the junior RPL-521 for 9 and 10-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.

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.
  • 48-32T chainrings, 110 / 80 BCD
  • 9 and 10-speed
  • Forged AL-6061-T6 arms
  • JIS square taper, 116mm spindle
  • 140mm
Crank length140mm
Chainrings48-32T
BCD110 / 80mm
Chainline44mm
Speed9 / 10-speed
Chainring materialAlloy 48T (black sand anodised, CNC detail), steel 32T (black)
Crank materialForged AL-6061-T6 aluminium
Crank finishSand black
Q-factor / I-factor161 / 132mm
Bottom bracketJIS square taper, 116mm spindle (not included)
SKU KWT-PRW-RPL-52148-3-1C97C
Brand PROWHEEL
Shipping Weight 0.9000kg
Shipping Width 0.250m
Shipping Height 0.100m
Shipping Length 0.400m