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​The multiple award-winning Calibre Bossnut is back, and it’s better than ever!

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Product code: 15903684 / 331527

​The multiple award-winning Calibre Bossnut is back, and it’s better than ever!

  • Full re-design
  • New frame tubes
  • New geometry
  • Fresh paint job
  • Massively upgraded specification

The Calibre brand is all about introducing people to Mountain Biking and ensuring they have a good experience whatever their budget. 

It's hardly surprising that the Calibre Bossnut is renowned as the best entry level full suspension bike on the market. When it comes to getting the best experience possible for the least amount of money, this bike cleans the floor with the competition.

The updated frame has a lower standover, longer reach, slacker angles and a full SRAM SX 12 speed groupset, perfect for ripping round trail centres or down technical descents.

SRAM Level T brakes with 180mm front and 160mm rear rotors
SRAM SX Eagle – PG1210
SRAM SX Eagle Power Spline 32T
Rock Shox Recon RL 130mm - 42mm offset, Alloy tapered steerer
6061 Alloy, 130mm rear wheel travel, 142 x 12mm bolt through
Formula 15mm bolt through 32H (100mm x 15mm)
Calibre Trail 780mm width, 30mm rise – 31.8mm
FSA Orbit tapered No. 57E
Resin platform pedal (test pedals)
Formula 12mm bolt through (142mm x 12mm)
Rock Shox Monarch R M/L tune – 190mm x 51mm
Cycling, Everyday Use, Weekend
WTB ST i29 TCS 2.0 32H Tubeless ready
Calibre Trail 15mm offset – 30.9mm 350mm length
Calibre Trail 45mm
WTB Vigilante High Grip Comp 2.3" front and WTB Trail Boss Comp 2.25" rear
15.2kg (Large without pedals)

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Ratings & Reviews

Overall Rating

4.67 out of 5
3 reviews
Write a review
4.67 out of 5


Went to Glentress at the weekend. been twice before on a hardtail and hung on for dear life. This bike glides, feels true, and smooth. I am no downhill expert but that was fun. This bike is awesome!!!

4.67 out of 5

Beyond expectation - wow is all I can say.

Been riding the bike for 4 weeks now, in a fair few different terrain types, Cheshire loam , Shropshire rock ridges - has not missed a single beat - its incredible for the money to be fair - Get ONE!!

4.67 out of 5

Good value for money

Well for start I have to say bike looks totally awesome well done for design

Found a lower price online? We'll beat it by 10%