The perfect balance between lightness, precision and aerodinamics

ROTOR launches its ROTOR 1×13 Triathlon groupset, the first 13 speed 1x groupset which allows triathletes to be faster in a real, effective and provable way, taking advantage of the features offered by a cassette designed to cover the full gear range, further improving aerodynamic performance.

With a single chainring we reduce the wind’s impact on one of the most mobile parts of the bike and get rid of elements which directly impact against the wind such as the front derailleur.

ROTOR 1×13 TT groupset includes a revolutionary rear derailleur, a choice of elite cassettes, 13 speed specific hubs and the world’s most sophisticated power meters, cranks and chainrings.

Advanced aerodynamics for endurance athletes

Aerodynamic thinking

A single ring drivetrain gives you internally routed cables for almost all frames and handlebars on the market for clean aesthetics of your bike and to reduce watts in resistance to the wind.


With less components on board, ROTOR 1×13 strikes the perfect balance between lightness, precision and reliability.


We refined the stiffness of key points of the chainring integration in the crankset to create and experience of optimised power transfer in your pedal stroke. Your muscles suffer less fatigue so you are able to go longer and stronger and take and be fresh for the next phase of your challenge.

Rear Derailleur

The rear-derailleur is the intelligent command center of the ROTOR 1×13 groupset.

Index Inside
Gear indexing is actuated inside the rear derailleur for fast, reliable and accurate shifting.

Armoured Box
Elegant and robust Armored Box structure to protect against all external elements, shocks and impacts.

Go to Origin
Press this button and shift directly to the smallest sprocket for faster wheel changeover.

Quick Extract
Quick extract system to easily remove and re-install the rear wheel.

Pulse Hydraulics
Proven hydraulic technology means no changing cables or recharging batteries.

The Bolt
A simple and inmediate adjustor to work with 12-speed cassettes.

Weight for rear derailleur, shifter, uncut hoses and liquid: 439 g


Single Trigger

Actuation The aerodynamic shifting trigger’s inner hose routing is everything that the most advanced mechanics and triathletes aim for.

Integrated hardware

The hose runs inside the aerobar and joins directly with the derailleur, with any kind of interference and ready for the most challenging cable routing that the most sophisticated TT bike may offer.

1x chainring

Wide choice 1x sizes to choose the perfect set-up for the terrain you ride.

Optimised tooth profiling for fast and precise shifting experience.

Maximise your pedalling power output with our emblematic Q RINGS®.


Select from a wide choice of elite performance cranks and power meters.

Modularity allows you select the perfect crank length, chainring, axle or spider combination

Easily install or switch out elements with a simple assembly system.

13s cassette

True Cadence

Data driven gearing with a closer progressive sequence in the first seven sprockets and greater increments of range in the six larger sprockets. Incredibly lightweight Unified structure with minimum weight for high performance precision cassette.


Optimised profiling of cassette teeth for a fast and precise gear shifting.

Cassette Sizes: 10-36 (243g) / 10-39 (247g) / 10-46 (304g) / 10-52 (331g)



In both thirteen and twelve speed formats, 1×13 groupset works with standard 12-speed chains. For this reason we have chosen the market leader KMC X12.


Market leading high performance KMC X12 chain.

Long Lasting

Extremely durable with quick assembly.

Lightweight 126 links weighing in at 269 g.

13s Hub 

We designed a 13 speed specific hub by restructuring the spacing of the hub complying with disc brake frame standards.

Superior hubs with lightweight and high performance, built to last a lifetime.

11s / 12s HG compatible.

13s Wheels

Our high performance wheels have been specifically designed for 13 speed hubs and cassettes, using the best materials with expert wheel building techniques to craft an exclusively precise wheel to compete with the best on the market.

Triathlon Kits

Choose your 1×13 groupset kit and customise your gearing sizes to best suit your cycling needs:

1X13 Performance

For competitive triathletes who track their performance and training.

Including Rear derailleur, shifter, 2INpower® ROAD power meter, Aero MAS Spider, 13 speed cassette, 13 speed wheels, 1x BCD110x4 Aero Chainring, 12s chain.

1X13 INspider 

For high performance triathletes who want a super light ride for high-speed.

Including Rear derailleur, shifter, INspider power meter, Aero Crown, ALDHU® cranks, 13 speed cassette, 13 speed wheels, 1x BCD110x4 Aero Chainring, 12s chain.2 velocità12s chain.

1X13 Triathlon 12s

For triathletes who want to upgrade their current transmission with a lightweight, reliable hydraulic system.

Including Rear derailleur, shifter, VEGAST® cranks, 12 speed cassette, 1x Direct Mount Chainring, 12s Chain.à

12s Options

Simply purchase our 1×13 shifting set, including rear derailleur and shifter, to upgrade your current 12s transmission to our reliable hydraulic system.

Our 1×12 options are the entry point to the ROTOR 1×13 platform without having to change your current 10s / 11s hubs and wheels. You can easily upgrade your groupset with 13s cassette and wheels at a later stage.

Cassette Sizes: 11-36 (230g) / 11-39 (235g) / 11-46 (294g) / 11-52 (324g)