Gamux is likely the manufacturer whose bikes are currently causing the biggest stir in the Downhill World Cup. The Sego is a direct offshoot of this top-level development work. At the moment, the AON-Racing team is experimenting in the World Cup with even wilder designs featuring a merged top and down tube, and may already have a successor up its sleeve. For now, however, the Sego remains the only bike that mere mortals can buy from Gamux. It’s definitely worth taking a closer look at the details of this futuristic downhill rocket.
Conclusion
The Gamux Sego is probably the coolest downhill bike money can buy right now. Even though the Swiss are already tinkering with a new product, the limited run of the Sego offers amateur cyclists the chance to get a taste of the Downhill World Cup. Pro or not: I’d even put this thing in my living room as a sculpture. - Jan Timmermann, BIKE editor
Gamux Sego in detail
- Intended use: Downhill
- Suspension travel: 200 / 200 mm
- Wheel size: 29 / 27.5” (Mullet) or Full-29
- Frame material: aluminium / carbon
- Weight: approx. 21 kg
- Price of frame set: 7,240 euros
- Price of the complete bike: 11,290 euros
- Special features: aluminium-carbon hybrid construction, high-pivot rear triangle, belt drive, gear shifting
Aluminium frame with carbon reinforcement
The Gamuy Sego frame is built around substantial CNC-machined aluminium components. Its development involved a full three years’ work at World Cup level. To optimise stiffness and reduce weight, square carbon tubes are bonded into the milled chassis. To isolate the high-pivot rear triangle from the drive train, the Gates drive belt runs over solid pulleys. Gamux is a strong contender for the US$100,000 special prize for the first World Cup victory with a belt drive (“Belted Purse”).
The Pinion C 1.6 gearbox allows you to change gears in any situation, with an optional electronic Smart-Shift function (486 euros extra). The absence of a cassette and rear derailleur is intended not only to reduce the number of parts prone to failure, but also to reduce unsprung mass, thereby enhancing the chassis performance. The Gamux Sego complete bike weighs in at around 21 kilos.
Dimensions, options and price
The head angle of the Gamux Sego was set at a flat 63 degrees during the extensive development phase carried out in collaboration with World Cup professionals, whilst the chainstay length remains adjustable between 445 and 460 millimetres. There are three sizes to choose from, with reach values ranging from 465 to 505 millimetres. Mullet or full-29 tyre set-ups are possible. The frame set costs at least €7,240, whilst complete bikes with Manitou suspension are priced at €11,290.
Specifications: Gamux Sego Complete Bike
- Drivetrain: Pinion C 1.6 with Gates Carbon Drive belt
- Front fork / Shock absorber: Manitou Dorado Pro / Mara Pro
- Brakes: Hayes Dominion A4
- Wheelset: Reynolds BL309 DH EXP or BL307 DH EXP with Schwalbe tyres
- Handlebar / Seatpost: Protaper
- Saddle / Handlebars: Ergon
What do you think: would a professional-grade bike like this be something for you, or would you prefer an off-the-shelf downhill bike? Share your thoughts in the comments!
Jan Timmermann
Editor
