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An over-sized monster of a bike that goes against the grain and proves that fat is fast!

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Product code: 15901415 / 315580

An over-sized monster of a bike that goes against the grain and proves that fat is fast!Calibre's Dune is a great value fat bike designed specifically to tackle UK trails, while still being a great choice for shredding across snow and sand.

We've taken standard fat bike geometry and tweaked it for faster, more aggressive riding in normal UK trail conditions. The Dune frame realises this geometry with an incredibly light, strong aluminium frame with huge clearance for big tyres and lots of mud. Hand-welded throughout, it's an incredible frame that makes the most of fat tyres' natural suspension and deserves to be ridden hard.

Weight is an issue since the wheels are so much wider than normal, which is why we use lightweight aluminium rims with cutout sections for even lower weight. Seated on these rims are a pair of Kenda Juggernaught Pro tyres*, one of the most popular fat tyres on the market and lighter than those used on the original incarnations of this stunning bike.

Making these wheels spin is a 2x8 Shimano drivetrain with a wide-ranging 11-34T cassette providing a huge spread of gears for varied terrain and conditions. Shifting is smooth and responsive across the entire 16 gear range thanks to advanced technology trickled down through the years from Shimano's pro-level XTR system. Powerful Tektro HD-M290 mechanical disc brakes take care of stopping power with 160mm rotors front and back.

The Calibre Dune slashes the pricetag while maintaining an incredible specification, giving you the perfect opportunity to get into fat biking and add another bike to your stable without breaking the bank.

*Please note the images are for illustrative purposes only, the Dune Bike comes with Kenda Juggernaught Pro tyres and NOT Schwalbe Jumbo Jims as shown.
Dune Geometry
Medium Large
Seat Tube 406mm 440mm
Effective Top Tube  585mm 610mm
BB Drop 60mm 60mm
Rear Centre 465mm 465mm
Seat Angle 69° 69°
Head Angle 68° 68°
Head Tube Length 105mm 110mm

History of the Fat bike

Fat bikes have taken the mountain biking community by storm over the last few years. Fat bikes are mountain bikes with huge 4-5" tyres run at very low pressures. They were originally designed for use in snow and sand where the big, low pressure tyres float on the surface, letting you ride in conditions when your tyres would normally sink and get stuck.

Now people have realised that the big tyres provide a sort of natural suspension and that they are great fun to ride on normal trails in normal conditions too. The big wheels simply soak up bumps and roll over obstacles that might upset normal mountain bike wheels. The low pressure tyres also mean a unique, fluid riding style that is incredibly fun and unlike any other kind of mountain biking!

That's the kind of riding that the Dune has been designed for.
Cartridge 128mm
Tektro Novela mechanical disc brakes with 160mm 6 bolt rotors
Alloy V brake, Tektro Auriga
Mechanical Disc
Shimano 11 - 34T
Lasco Fat Bike
6061 oversized alloy trail forks with 15mm bolt through, Rigid Alloy
Lightweight 6061 alloy frame with trail-tuned fat bike geometry and 12mm bolt through dropouts
Shimano Alivio direct mount
KT 15mm x 150mm 32H
Shimano Altus and Alivio
Shimano Altus 2 x 8 speed
Calibre trail 700mm 1" rise 9 degree backsweep
FSA No. 57
Platform pedal
Shimano Altus
KT 12mm x 197mm 32H
Calibre Fat Bike drilled double wall
Calibre Dune single line
Alloy 31.6mm 350mm
Calibre Trail 70mm extension
Kenda Juggernaught Pro

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Ratings & Reviews

Overall Rating

3.00 out of 5
1 review
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3.00 out of 5

Cracked frame - would be great value for money otherwise

Frame cracked around seat tube after 2 yrs/2000 km of mostly beach sand riding. Until then I was quite happy - good value for money, cheap but capable. Brakes lack power.

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