The Sunn Shamann is probably the craziest XC bike you'll see this year

Unique looking XC frame will be eye-catching on the race track

MTB history buffs will know Sunn from back in the day. From Anne-Caroline Chausson and François Gachet’s World Championships back in the nineties, to Eric Barone hitting 130mph on a ski slope and one of the current stars of EWS Isabeau Courdurier, Sunn has had a prolific history in racing.

Sunn has been a bit quiet in recent years though, and with new money a few years ago, we’re enjoying seeing Sunn becoming more and more visible each year — and UK distribution is currently being discussed.

Can you figure out how the linkage works?
Can you figure out how the linkage works?

It turns out some pretty cool looking bikes, too. The Kern LT is piloted by Courdurier, but it’s the Shamann that stood out at the 2017 Eurobike, can you guess why?

The seat tube / linkage area is a feat of industrial design and neat linkages. In fact, the linkages are so neat (and the picture sadly blown out a touch more than ideal) that it looks more like a hardtail. The linkages are smooth both physically and aesthetically, and the shock basically hidden.

It might look solid from a distance, but there's a linkage system and shock hidden in there
It might look solid from a distance, but there's a linkage system and shock hidden in there

The carbon XC bike is built with 100mm of travel front and rear, with RockShox providing the suspension on this €4,000 S1 model. 

The S1 and S2 models will get a Toray 700/800 grade carbon mix, while the top-line Finest will get a Toray 800/900 build. 

The rear dropouts extend quite a way back, which some may find odd looking
The rear dropouts extend quite a way back, which some may find odd looking

While the frame looks crazy, it holds some neat features. The seatpost is rigid as standard, but there is routing for dropper posts too, as well as (we believe) Di2 and shock lock-outs — Sunn has made this as adaptable as possible.

The down tube is as wide as we’ve seen on an XC bike, no doubt there to boost stiffness.

A beefy down tube should add plenty of frame stiffness. There's Sunn's own chainguide on there too
A beefy down tube should add plenty of frame stiffness. There's Sunn's own chainguide on there too

Kit on the S1 looks fair — there’s a RockShox SID RL fork and Deluxe RL shock, while the drivetrain largely comes from the Shimano SLX range. A Race Face Turbine crank finishes the drivetrain.

The seatpost and bar also come from Race Face, while Sunn provides the 70mm stem and saddle.

That head tube is very neatly sculpted
That head tube is very neatly sculpted

Mavic’s Crossmax Pro tubeless wheels hold Hutchinson Python and Taipan 2.1” tyres. The whole thing is brought to a stop by Shimano SLX brakes.

More information will be available soon on www.sunn.fr

There's the shock — nicely protected from dirt and knocks
There's the shock — nicely protected from dirt and knocks

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Tom Marvin

Technical Editor, Tech Hub, UK
Tom's been riding for 15 years, and has always chopped and changed bikes as soon as his budget allowed. He's most at home in the big mountains, having spent nigh on 30 weeks riding the Alps, as well as having lived a stone's throw from the Scottish Highlands for four years. Tom also enjoys racing events like the Strathpuffer and the Trans Nepal.
  • Discipline: Mountain
  • Preferred Terrain: Steep and super tech or fast and flowy
  • Current Bikes: Canyon Spectral, Pivot Mach 429SL, Mondraker Vantage R +
  • Dream Bike: Transition Scout
  • Beer of Choice: Gin & tonic
  • Location: Bristol, UK

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