Campagnolo Chorus 12-speed inner chainring 32 teeth: the Italian benchmark for ultra-precise gear changes and optimal power transmission. Made from CNC-machined aluminum with surface treatment for maximum durability, this 32-tooth chainring is specially designed to pair with the 48-tooth outer chainring on Campagnolo Chorus 12-speed Ultra-Torque cranksets. Supplied with its 4 fixing bolts, this chainring embodies the Italian design and X.P.S.S.™ technology that have built Campagnolo's reputation.

Chorus 12-speed overview and philosophy

Campagnolo's Chorus 12-speed groupset represents the best performance-to-price ratio in the Italian range. It benefits from the same technological advances as the Super Record and Record groupsets, but with more accessible materials that do not compromise its mechanical performance. This 32-tooth inner chainring is an integral part of the Chorus 12V ecosystem, offering passionate cyclists pro-level equipment at a reasonable price.

Technical highlights

• X.P.S.S.™ Technology: Extreme Performance Shifting System developed by Campagnolo to guarantee absolute speed and precision, even under load. The up-shift and down-shift zones as well as the tooth profile have been optimized for smooth shifting in all circumstances.
• Symmetrical teeth: The tooth profile on this inner chainring ensures smooth and precise transmission, even in extreme cross-chain situations. The symmetrical design promotes transmission efficiency and chain longevity.
• Hard anodizing: The chainring's surface treatment extends its lifespan and resists wear, weather and repeated mechanical stress.
• CNC machined: High-precision finishing ensuring a perfect fit and optimal rigidity for power transmission without energy loss.
• Fixings included: The 4 fixing bolts are supplied with the chainring, facilitating installation and guaranteeing compatibility with Campagnolo standards.

Standards and compatibility

• BCD (bolt circle diameter): 96 mm for the small inner chainring, specific Chorus 12-speed configuration.
• Dual BCD system: The Chorus 12V crankset uses a dual bolt circle: the large chainring (48/50/52T) mounts on a 123 mm BCD, while the small chainring (32/34/36T) mounts on 96 mm. This architecture offers maximum rigidity and allows all chainring combinations.
• Exclusive compatibility: This chainring is specific to Campagnolo Chorus 12-speed Ultra-Torque cranksets. It is not interchangeable with other Campagnolo groupsets (Record, Super Record) or with other brands.
• Ultra-Torque: Campagnolo crankset system using a steel axle for exceptional rigidity and power transmission.

Available variants

• 32 teeth (FC-CH1232): EAN 8053340454837 — compatible with 48-tooth outer chainring (BCD 123 mm). Ideal for hilly routes and road versatility.
• 34 teeth (FC-CH1234): Compatible with 50-tooth outer chainring (BCD 123 mm). Classic compact configuration for a balance between speed and climbing ability.
• 36 teeth (FC-CH1236): Compatible with 52-tooth outer chainring (BCD 123 mm). For riders favoring big gears and speed on flat terrain.

Weight and performance

At a weight of approximately 38 grams (bolts included), this 32-tooth inner chainring offers an excellent compromise between lightness and robustness. The CNC-machined aluminum guarantees optimal rigidity to transfer power without flexing, while the tooth profile ensures fast and smooth gear changes, even under load.

Why choose this Chorus 12V chainring?

• High-level performance: Benefit from Campagnolo technology at a more accessible price than the Super Record and Record ranges.
• Durability and reliability: Proven materials, resistant surface treatment, meticulous Italian design.
• Versatility: The 48/32 teeth configuration is ideal for cyclists looking for a compact and versatile gearing, capable of tackling mountain passes as well as rolling sectors.
• Iconic Italian design: Campagnolo has embodied cycling excellence for decades, with immediately recognizable design and refined finishes.