-€80.00
Rotor UNO 12 S Cassette
Reduced price:
€299.00
Tax included
This cassette is for Shimano bodies.
It's compatible with rear Shimano derailleurs. Please check the derailleur feature: it's mostly used for gravel and MTB.
We suggest to use the Rotor UNO 12s chain with this cassette.
Cassette
ROTOR UNO 12-Speed Cassette – 11-36 / 11-39 / 11-46 / 11-52
Optimize your 12-speed drivetrain with gear ranges designed for road, triathlon, gravel and MTB performance. Below you’ll find important notes about compatibility with Shimano 12-speed road groupsets.
Recommended Chains
- KMC 12-Speed
- ROTOR UNO 12-Speed
Shimano 12-Speed Road Compatibility
- Dura-Ace R9250 & Ultegra R8150: cassette is too large for stock rear derailleurs.
- 105 Di2 R7150: compatible up to 36T → works with the 11-36.
- Workaround: combine 12-speed road shifters with a GRX 12-speed rear derailleur to use the 11-39 / 11-46 / 11-52 ranges on a road bike.
Key Takeaways
- 11-36: Road / Triathlon (perfect with 105 Di2 R7150).
- 11-39: Ideal for gravel, excellent balance of gears.
- 11-46 & 11-52: For demanding gravel or MTB use.
Specifications by Range
| Range | Sprockets | Weight | Recommended Use |
|---|---|---|---|
| 11-36 | 11-12-13-14-15-17-19-21-24-27-31-36 | 230 g | Road | Triathlon |
| 11-39 | 11-12-13-14-15-17-19-21-24-28-33-39 | 235 g | Gravel | Versatile Road |
| 11-46 | 11-12-13-15-17-19-22-25-29-34-39-46 | 294 g | Gravel | MTB |
| 11-52 | 11-12-13-15-17-19-22-26-31-37-44-52 | 314 g | MTB |
Usage Tips & Setup Options
- Road/Triathlon (Shimano 12-Speed): the 11-36 works well with 105 Di2 R7150. It is too large for stock Dura-Ace / Ultegra rear derailleurs.
- Mixed setup for road with larger sprockets: pair 12-speed road shifters with a GRX 12-speed rear derailleur to use 11-39 / 11-46 / 11-52 on road frames (check hanger and cage length).
- Gravel: the 11-39 is perfectly suited, offering balanced steps and excellent versatility.
- Gravel / MTB: 11-46 and 11-52 deliver ultra-low gearing for steep climbs and technical sections.
Velo-Perso’s Opinion
The ROTOR UNO 12-Speed cassette stands out for its smart gear progression and broad range of applications. On Shimano road setups, the 11-36 is the safest choice (105 Di2). To go further on a road bike, combining road shifters with a GRX 12-speed derailleur unlocks the larger ranges (11-39/46/52). For gravel, the 11-39 is our top recommendation, delivering the perfect balance of cadence and traction. Pair it with a KMC 12-speed or ROTOR UNO 12-speed chain for maximum precision and durability.
Rotor UNO 12-speed 11-46 cassette – photo gallery
Below you will find several detailed pictures of the Rotor UNO 12-speed 11-46 cassette: real weight on our scale, close-up of the CNC machining, rear view of the largest sprockets and flat view. These high-resolution images taken by velo-perso.com help you assess finish quality and machining before ordering.
| Material | Stainless Steel |
|---|---|
| Storage location (from where it's shipped to you) | France |
| Manufacturing location | Spain |
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