Campagnolo's 12-Speed drivetrain required significant engineering as well as deep material science and manufacturing knowledge. As evidenced by the flush side plates and pins of the 5.15mm 12-speed chain, the tolerances are exceptionally tight. Campagnolo created a 12-speed Chorus cassette that is the same depth, uses the same freehub, and installs the same way as their 11-speed cassette. That's right- no new wheels or freehub bodies required if you are coming off of Campagnolo 11-speed. The development of the refined components throughout the drivetrain was a lengthy process, but when you look at the Chorus 12 Cassette, you can see how it all serves on purpose- rapid, precise, and reliable shifting within the minimal distances between cogs.

These technological improvements across the drivetrain make for a new standard in mechanical shifting. A double chainring drivetrain with a 12-speed cassettes opportunity for simplicity, effectively eliminating compromises in gearing selection. Not only can the rider now pedal atop gearing suited for any terrain, but he or she will no longer need to choose between cassettes specific to any one type of course. With 12 gears the need for a wide range of available cassette options is effectively eliminated as the extra gear allows for single tooth increments all the way to the 8th sprocket. Athletes can choose between 11-29, 11-32, and 11-34 with zero compromise in gearing. Incorporating an additional gear into the same physical space presented the engineers of the Campy Tech lab with a challenge as the additional gear offered a particularly difficult challenge when considering Campagnolo’s commitment to maintain or improve durability and functionality in every generation. Yet they succeeded.

The Chorus 12 cassette in a 12-29 combination weighs in at 310 grams. All cogs are steel, and the two larger groups of three cogs are pinned together. All of the cogs are machined to step into each other ensuring fast, accurate, sure chain engagement whether moving the chain up or down. The cassette uses a specific 12-speed lockring. There are also spacers, the position of which is indicated in the cog by cog listing below. Like the lockring, all of the cogs and spacers are 12-speed specific. Any attempt to use other products could result in frameset, drivetrain or wheel damage.

The mechanical feel of a Campagnolo shifting system has always been something to behold. With the release of the 12-speed road double drivetrain, the speed, precision and efficiency retain that legacy feel, but with a refinement that is obvious the first time you run through the gears. The entire system makes it all work, but you feel it from the way the chain meshes with cassette and that action propels you forward. It is impressive, and for dedicated Campagnolo riders, we highly recommend you ride it. Same goes for Shimano and SRAM lovers as well. It has to be ridden to be experienced and felt, thus absorbed and believed. Return to Top