Assos Goomah GF731 Frame Set Size 58

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Built by Goomah SA — the Assos Goomah GF731 Frame Set is the exclusive Swiss frame makers and material masters who also develop carbon parts for auto and boat racing — the G.731 benefits from Assos' many years of developing the world's finest cycling clothing. With carbon being a material of extensive familiarity to Assos and finding purpose in many of its articles, there are three different types of high-modulus carbon fiber employed on the frame, layered specifically via a process called Matrix Surface Mapping. Countless test cycles identified previously overlooked areas of the frame in order to focus on balancing smooth ride quality with superb responsiveness. Assos engineers knew they could develop the stiffest frame in the world, but this would be useless and miserable to the vast majority of riders. A finely-calibrated degree of vertical compliance is dialed into areas like the seatstays, the head tube, the fork, and the integrated seatpost, all with the intention of delivering a bike that could race in a criterium or a century, or anything in between. 

The Goomah G.731 frame features a BB30 bottom bracket shell, which achieves the optimum blend of stiffness and weight savings, its narrow profile granting exceptional torsional strength. Matrix Surface Mapping of the forces exerted by the bicycle's drivetrain —located, of course, on the right side of the frame — led engineers to understand that an asymmetrical rear triangle was necessary to extract maximum power and efficiency from the pedals. The resulting reinforcement of the right side of the rear triangle achieves this with minimal aesthetic compromise. The frameset is, of course, compatible with all electronic drivetrains and current power meters on the market, and all cabling is internally routed.

The Assos equipeCampionissimo G.731 Goomah Carbon ISP Frameset comes in four sizes, from Small to X-Large, and in one color scheme, known as Werksmannschaft. A size Medium frame, excluding fork, with an uncut seatpost weighs approximately 947 grams.


Frame Material: carbon fiber
Fork Material: carbon fiber
Steer Tube Type: tapered carbon fiber
Headset Included: yes
Bottom Bracket Type: BB30
Front Derailleur Mount: braze-on
Cable Routing: internal
Compatible Components: mechanical and electronic drivetrains
Frame-Only Weight: 947 g
Fork Weight: 329 g