A junior-length 1x crankset for Boost-spaced kids' mountain bikes, with a 32T narrow-wide steel ring and a BSA 73mm threaded bottom bracket in the box.

Highlights

  • 32T steel narrow-wide chainring on 76 BCD
  • Boost version with a 53mm chainline
  • Forged AL-6061-T6 arms, black sand anodised
  • Rated by Prowheel for 9, 10 and 11-speed
  • BSA 73mm threaded bottom bracket included
  • 140mm or 155mm

Sized for young riders

Shorter arms let smaller riders pedal in a comfortable circle, and Prowheel pairs them with a 76 BCD ring so the gearing suits a junior bike.

What you get

The crankset with its 32T chainring, plus a BSA 73mm threaded bottom bracket.

Compatibility & fit

For Boost-spaced frames. The included bottom bracket suits frames with a BSA (English-threaded) 73mm shell. Prowheel also offers this crank with a BB92 press-fit set, which is not included. Prowheel rates this crank for 9, 10 and 11-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

LengthChainringVersion
140mm32TBoost
155mm32TBoost
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.
  • 32T steel narrow-wide ring, 76 BCD
  • Boost, 53mm chainline
  • Forged AL-6061-T6 arms
  • 9, 10 and 11-speed
  • BSA 73mm threaded BB included
Crank length140mm or 155mm
Chainring32T, steel, narrow-wide, black
BCD76mm
Chainline53mm (Boost)
Speed9 / 10 / 11-speed
Crank materialForged AL-6061-T6 aluminium
Crank finishBlack sand anodised
Q-factor / I-factor175 / 145mm
Bottom bracketBSA 73mm threaded, included
SKU KWT-P-PRW-FD04S-B
Brand PROWHEEL
Shipping Weight 0.9000kg
Shipping Width 0.250m
Shipping Height 0.100m
Shipping Length 0.400m