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Merckx EMX-5 Road Bike Frame - 2012

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Item # EDD000E

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Item # EDD000E


Once considered to be the workhorse race frame in team Quick-Step's arsenal, the Merckx EMX-5 was built to provide a lightweight, rigid, and stable platform for the strongest riders in professional cycling. The frameset was fine-tuned from previous EMX versions, blending a large BB86 bottom bracket, a 1-1/2in lower headset bearing, and fully internal cable routing into the package. It's no wonder that Boonen and his buddies used this secret weapon to take on everything from the Spring classics to the three-week-long grand tours. Once again, nice work, Mr. Merckx.

Starting with the frame itself, Merckx's EMX-5 was constructed using a full Carbon Laminate + layup. Essentially, this technique involves layering the carbon fiber sheets together in ways that maximize the strength and rigidity of the frame. This layup was combined with Merckx's Optimized Structural Reinforcement (OSR), which, as the name suggests, places high modular (50HM/HS) stiffness fibers in strategic areas for added reinforcement. These fibers were used in conjunction with high-strength fibers at force-load-heavy zones, such as the BB86 bottom bracket and head tube junctions. By using these methods together, Merckx engineers were able to add material where it's needed for increased rigidity, while removing material at less flex-prone areas to keep the overall weight as low as possible. This is the same technique that's used for all of Merckx's top-end carbon road frames, as it yields the ideal combination of stiffness, low weight, and vertical compliance.

The EMX-5 provides a comfortable ride, yet it still possesses the race-tuned characteristics that are necessary for competitive road racing. Aside from the frame's optimized layup schedule, the fork has also been designed to deliver maximum stability and speed. The carbon blades, made from OSR 50 1K carbon, flare to a wide, aerodynamic shape toward the 1-1/2 to 1-1/8in steerer, which works to both cut aerodynamic drag and to provide precise handling up front. Similarly, at the rear end of the frame, both the seatstays and chainstays were designed with handling and power transfer in mind. Their slender shapes provide the ideal blend of comfort and transmission of power directly to the rear wheel.

The Merckx EMX-5 Road Bike Frame - 2012 includes an FSA K-Force seatpost, and it also features internal cable routing. It's available in the sizes 50, 52, 54, 56, 58, and 60cm and in the colors Matte Black, Red/white, and White/black.

Tech Specs

Frame Material:
Carbon OSR 50HM1K
Fork Blade Shape:
Steer Tube Type:
tapered carbon fiber
Rear Axle:
130 mm
Dropout Type:
Replaceable Rear Derailleur Hanger:
Head Tube Diameter:
1-1/2 to 1-1/8in tapered
Headset Included:
yes, FSA
Bottom Bracket Type:
Front Derailleur Mount:
Derailleur Pull:
Seatpost Diameter:
31.6 mm
Cable Routing:
FSA K-Force seatpost
Recommended Use:
road training and racing
Manufacturer Warranty:
limited lifetime

sizing chart

Bike size by rider height


Geometry chart

Eddy Merckx

Geometry Chart


EMX-5 2011, 2013

Seat Tube


Effective Top Tube






Stand Over

Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop




50 50.7cm 53.3cm 51.1cm 38.3cm 77.7cm 11.4cm 71.3 73.8 7.1cm 40.8cm 98.0cm
52 52.5cm 54.5cm 52.7cm 38.7cm 79.3cm 12.9cm 71.7 73.4 7.1cm 40.8cm 98.5cm
54 54.0cm 55.7cm 54.1cm 39.2cm 80.9cm 14.5cm 72.0 73.1 6.9cm 41.0cm 99.5cm
56 55.8cm 56.9cm 55.6cm 39.6cm 82.4cm 16.0cm 72.4 72.7 6.9cm 41.0cm 100.0cm
58 57.9cm 58.2cm 57.1cm 40.1cm 83.9cm 17.4cm 72.7 72.4 6.9cm 41.2cm 100.9cm
60 59.7cm 59.5cm 58.6cm 40.5cm 85.7cm 19.1cm 73.1 72.0 6.7cm 41.2cm 101.4cm

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Unanswered Question
Avg. ride time: 3h 52m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Will Ultegra Di2 work on this frame?

Avg. ride time: 21m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Excellent Frameset

  • Familiarity: I've used it several times

I just finished building up the matte black frameset with campy record and gotten a few rides in. As far as the ride quality, I couldn't be happier. It handles great. It is very stiff laterally but dampens rough roads well. For appearance, everyone who has seen the frame has been in awe of the lines and quality. The black is subtle and clean. I built this using a Rotor BB30 crankset also from competitive cyclist. This paired perfectly with an enduro PF4130 bottom bracket.