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Calibre Gauntlet 650B Mountain Bike

Discount Card Price
Retail Price £699.99

Colour: Blue-White
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A hardtail mountain bike that gives you great speed and complete control over varied terrain.

The Calibre Gauntlet 650B Hardtail Mountain Bike is built around 27.5" wheels for versatile trail performance, with a host of high quality components that include SRAM X5 shifting, Rockshox forks and Avid Elixir 1 hydraulic disc brakes.

Check out the gallery pictures above to see the Gauntlet's great 4 Star review from What Mountain Bike Magazine August '16!

Designed from the ground up by Calibre's experts, the frame geometry ensures you get the very best out of the 27.5" wheels. Short chainstays reduce the wheel base for sharp, fast cornering while a slack head angle improves stability at high speed. Strong, lightweight alloy tubing is hand-welded throughout for powerful performance in tough terrain.

The wheels themselves use specific trail rims laced to quality aluminium hubs. At 23mm wide, they follow the current trend of wider rim profiles to get the best grip and traction out of your tyres. The tyres come from WTB as well: the all-mountain 2.3" WTB Vigilante front and 2.2" Trail Boss rear tyres with a square-lugged, open-tread pattern for superb stability in loose and wet conditions.

Up front, Rockshox XC30 Solo Air forks provide 120mm of plush air suspension with a lockout for when the suspension isn't needed. Air forks are lighter and more adjustable than spring forks and are generally better for xc, trail and all-mountain riding. Quality air forks from a respected brand like Rockshox on bike under £700 is fantastic value for money!

Shifting comes courtesy of Rockshox's parent company SRAM, whose X5 shifters offer sharp, quiet performance over a wide range of 20 gears. Avid Elixir 1 hydraulic disc brakes mean consistent stopping power with superb modulation. The high level of componentry continues to the contact points, where a WTB saddle and Ritchey MTN trail handlebar ensures great comfort and control.

Please check the info tab for geometry details


Wheel Size: 650B
Frame: Lightweight 6061 hydroformed alloy frame with one piece wishbone seat stays
Fork: RockShox XC30 Solo Air 120mm
No. of Gears: 20
Gear Details: SRAM X5 2 x 10 speed
Gear Shifters: SRAM X5
Front Derailleur: SRAM X5
Rear Derailleur: SRAM X5
Chainset: FSA Gamma drive 36/24T with bash guard
Cassette: SRAM 1030 11-36T
Brakes - Type: Hydraulic Disc
Brakes - Details: Avid Elixir 1
Brakes - Levers: Avid Elixir 1
Weight: 12.8kg
Rims: Calibre disc specific
Tyres: WTB Vigilante 2.3" front and WTB Trail Boss 2.2" rear
Front Hub: KT Alloy 32H
Rear Hub: KT Alloy 32H
Stem: Calibre Trail 70mm extension
Saddle: WTB Volt
Handlebar: Ritchey MTN Trail 760mm width, 20mm rise
Head Set: FSA No.28
Pedals: Platform pedal
Seatpost: Alloy 30.8mm 350mm


Gauntlet Geometry
16" 18" 20"
Seat Tube 406mm 457mm 508mm
Effective Top Tube  580mm 596mm 627mm
BB Drop 33mm 33mm 33mm
Rear Centre 425mm 425mm 425mm
Seat Angle 72° 72° 72°
Head Angle 67.5° 67.5° 67.5°
Head Tube Length 110mm 120mm 130mm

Reviews (5)

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  • 5 out of 5
Fantastic downhill for the price, 24 June 2016
By Bowfinger (edinburgh)
Bought this bike last week. It's a dream uphill, the SRAM gears are great, fast shifting and accurate. The forks are fantastic for getting over everything downhill with the lock off.

Also the guys in the shop went out of their way on service.


  • 5 out of 5
Surprisingly good !, 21 May 2016
By Ads (Devon)
I had been on the look out for a replacement hardtail for a while and had decided that £850 + would need to be spent on an equivalent bike. Luckily, 3 weeks ago, i stumbled across the Gauntlet - air forks, 27.5 wheels, SRAM / FSA bits and £300 cheaper. Since then it's been ridden hard along rocky trails, wooded trails, bumpy grass trails, across rivers and on roads numerous times -The bike has rolled very we'll and seems to handle predictivly but would benefit from a dropper post as an upgrade. The rebound adjustment seems "cheap" compared to my previous Marzocchi bombers and I've just left it on the "hare" setting. All in all..... a good value, capable hardtail.

  • 4 out of 5
Great spec, let down by quality control and service, 10 May 2016
By Ace
The bike is a well specc'd machine with good gears, air suspension and ok disk brakes.
When the bike arrived there were a number of quality control issues, the gear cassette wasn't tightened and the cogs practically fell off when i removed the rear wheel. I had to remove the rear wheel because the brake wasn't centered correctly, and the brake bolts were overtightened.
The rear wheel had a very low spoke tension and had to be tensioned up correctly in a workshop and then trued.
Good value for money bike, if you have access to tools and a workshop, otherwise you may have to pay a mechanic to fully check over the bike.

  • 5 out of 5
Excellent value for money by bike., 03 May 2016
By Simon (Staffordshire)
Really pleased with this bike, very good spec for the money in my personal opinion.
Took me a few minutes to get used to the Sram shifters (I've only ever used Shimano before) but all good now.
Very good brakes and front shocker plus wide bars give you plenty of control and confidence.
Overall a well thought out bike.

  • 5 out of 5
Great Mountain Bike, 18 October 2015
By Springbok (Colchester)
This is a great product. Big bold bike. Breaks are strong and very accurate.



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