New Merida Reacto KOM - 21 Days of Tour Tech

World champion Rui Costa rides one of three in existence

World champion Rui Costa is racing the 2014 Tour de France on a Merida Reacto KOM, of which there are only three in existence. 

Designer Jurgen Falke told BikeRadar that Merida's aim with the new bike was to create something that retained all of the aero benefits of the Merida Reacto, but also met the UCI’s 6.8kg / 15lb minimum weight limit for bikes. Despite earlier statements that the bike’s aero and dynamic efficiency more than made up for its slightly heavier than average frame, Merida claims that Costa's complete Reacto KOM frameset is about 165g lighter than his previous Merida Reacto.

Falke outlined how some of the weight savings on the new frame were made. The use of different carbon in new layups trimmed 70g from the frame, he said, and another 30g from the fork. The aerodynamic and shock-reducing S-Post seatpost has been constructed in one piece, rather than the previous two, cutting 50g more, and Merida used light aluminium headset cups weighing just 15g.

The reacto kom shares the evo's kamm tail-heavy aero shaping but uses lighter carbon fibre and a new layup: the reacto kom shares the evo's kamm tail-heavy aero shaping but uses lighter carbon fibre and a new layup
The reacto kom shares the evo's kamm tail-heavy aero shaping but uses lighter carbon fibre and a new layup: the reacto kom shares the evo's kamm tail-heavy aero shaping but uses lighter carbon fibre and a new layup

The truncated airfoil tube shapes of the Reacto carry over to the Reacto KOM, but in a lighter package

Falke claimed that the complete new bike is a whopping 500g lighter than Costa's previous Reacto Evo, which we weighted back in February at 7.43kg / 16.38lb, so if, as claimed, the KOM hits the magic 6.8kg / 15lb mark, there has certainly been an intensive diet. 

The Reacto KOM retains the truncated airfoil tube shaping of the Reacto, which Merida calls Fastback, and the direct-mount rear brake that is tucked under the chainstays.

Production and availability information is limited at the moment, but don’t expect to see one in your local dealer until 2015.

Costa debuted this bike at the 2014 Tour de Suisse, which he won for the third successive year.

With the direct-mount rear brake tucked underneath the chainstays, engineers were freed up in their design for the seatstay/down tube junction: with the direct-mount rear brake tucked underneath the chainstays, engineers were freed up in their design for the seatstay/down tube junction
With the direct-mount rear brake tucked underneath the chainstays, engineers were freed up in their design for the seatstay/down tube junction: with the direct-mount rear brake tucked underneath the chainstays, engineers were freed up in their design for the seatstay/down tube junction

With the rear brake tucked under the seatstays, Merida designers are free to rework the seatstay and down tube configurations for aerodynamic gain

Robin Wilmott

Tech Writer, Tech Hub, UK,
Robin began road cycling in 1988, and with mountain bikes in their infancy, mixed experimental off-road adventures with club time trials and road races. Cyclocross soon became a winter staple, and has remained his favourite form of competition. Robin has always loved the technical aspect of building and maintaining bikes, and several years working in a good bike shop only amplified that. Ten years as a Forensic Photographer followed, honing his eye for detail in pictures and words. He has shot at the biggest pro events since the '90s, and now he's here, drawing on all those experiences to figure out what makes a bike or component tick.
  • Discipline: Road, cyclocross, time trials
  • Beer of Choice: Sierra Nevada Pale Ale

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