Chorus 12-speed brings carbon cranks and an Ultra-Torque steel axle to a more versatile gearing range, including a 48/32 sub-compact that suits climbing and all-road riding.

Highlights

  • Directly moulded unidirectional carbon cranks
  • Ultra-Torque steel axle, as used on Record
  • 123mm BCD to the crank, 96mm BCD between the rings
  • 48/32, 50/34 and 52/36 combinations
  • 145.5mm Q-factor
  • Surface-treated chainrings for longer life

Double ring of bolts

The outer chainring bolts to the crank on a 123mm circle, and the two rings are joined to each other on a 96mm circle. The smaller bolt circle is what lets Chorus run the 48/32 combination.

Proven Ultra-Torque

The steel Ultra-Torque axle gives the same stiff, direct connection as Record, and symmetrical inner-ring teeth keep shifting fluid even when cross-chained. Claimed weight is 728g (172.5mm, 32/48).

Options

ChainringsCrank lengths available
48/32172.5mm
50/34170mm, 172.5mm
52/36170mm, 172.5mm, 175mm

Compatibility & fit

For Campagnolo Chorus 12-speed mechanical groupsets. Uses Campagnolo Ultra-Torque bottom bracket cups (sold separately) to suit your frame: BSA, ITA, T47 or press-fit. Fitting is available from the Tune Cycles workshop as a separate service; it isn't included in the price.

Campagnolo's Limited Conventional Warranty covers this product against defects in materials or workmanship for 3 years from the date of retail sale, for the first retail purchaser with proof of purchase. It does not cover normal wear and tear, crash damage, improper assembly or maintenance, or use with components Campagnolo does not specify as compatible. For warranty support, return the product to Tune Cycles and we'll manage the claim with Campagnolo's Australian distributor.
  • Unidirectional carbon cranks
  • Ultra-Torque steel axle
  • 123 / 96mm BCD
  • Aluminium chainrings
  • 145.5mm Q-factor
GroupsetCampagnolo Chorus 12-speed (mechanical)
Speeds2x12
Crank materialUnidirectional carbon fibre
AxleSteel, Ultra-Torque
BCD123mm (outer to crank), 96mm (inner to outer)
Q-factor145.5mm
Combinations48/32, 50/34, 52/36
Claimed weight728g (172.5mm, 32/48)
SKU FES-P-24492
Brand Campagnolo

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