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In Stock & Ready To Ship — XT/Ultegra RT-MT800 Disc Rotors
Rotor 12 Speed Cassette 11/36 Tooth
Rotor 12 Speed Cassette 11/39 Tooth
Rotor 12 Speed Cassette 11/46 Tooth
Rotor 12 Speed Cassette 11/52 Tooth
11/36 Tooth
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Rotor 12 Speed Cassette 11/36 Tooth
Rotor 12 Speed Cassette 11/39 Tooth
Rotor 12 Speed Cassette 11/46 Tooth
Rotor 12 Speed Cassette 11/52 Tooth

Rotor 12 Speed Cassette

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The Best 12-Speed Cassette On The Market

With snappy shifting and plenty of range, these feather-weight cassettes are a welcome upgrade to your 12-speed drivetrain. The Rotor 12 Speed Cassette uses two-piece steel and aluminum construction to keep weight down without sacrificing durability. Simply put, this is the best 12-speed cassette on the market.

The ROTOR 12 speed cassette is compatible with Rotor's 1x13 shifter/derailleur or Campagnolo Ekar 13-speed with an adjustment of the upper limit screw on the derailleur.


  • Two-piece steel and aluminum construction
  • Snappy shifting and plenty of top-end range
  • Weight: 225-314g
  • 11-36, 11-39, 11-46, 11-52
  • Hub compatibility: Any Shimano HG freehub body
  • Discipline: MTB, Road, Cyclocross, Gravel

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

    Cassette Type: Shimano 11 

    11/36 Tooth

    Weight: 225 grams

    Mfg PartNum: C15-003-11360-220 

    11/39 Tooth

    Weight: 231 grams

    Mfg PartNum: C15-003-11390-220 

    11/46 Tooth

    Weight: 282 grams

    Mfg PartNum: C15-003-11460-220 

    11/52 Tooth

    Weight: 314 grams

    Mfg PartNum: C15-003-11520-220 

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