Calibre 2025 Bossnut Pro Full Suspension Mountain Bike

Built on the same award winning frame but with a tougher custom tubeset, improved cable routing and added bosses for tool storage, the Bossnut Pro is stronger, tougher, and ready for years of riding. Choice component upgrades make it the bike the Calibre team riders wanted, including a RockShox Psylo Gold fork, RockShox Deluxe Select rear shock, Shimano 4 pot hydraulic brakes, a 12 speed Shimano Deore drivetrain and Maxxis tubeless ready tyres. With Boost hub spacing for extra stiffness and space for a bottle cage inside the frame, the Bossnut Pro is the complete package for riders moving up from a hardtail or chasing their next trail challenge. Available online and in the following GO Outdoors stores while stocks last Basingstoke, Berwick, Blackburn, Bury, Canterbury, Cardiff, Chester, Chesterfield, Clydebank, Coatbridge, Derby, Doncaster, Edinburgh, Erdington, Gateshead, Harlow, Hull, Inverness, Ipswich, Kidderminster, Liverpool, Loughborough, Milton Keynes, Norwich, Nottingham, Penrith, Peterborough, Plymouth, Pudsey, Shrewsbury, Stockport, Stoke, Sunderland, Swansea, Swindon, Taunton, Thurrock, Wakefield, Wigan, Wolverhampton, Coventry, Stockton and York. Size info XS 5 ft 5 165cm to 5 ft 9 175cm S 5 ft 6 168cm to 5 ft 10 178cm M 5 ft 8 173cm to 6 ft 183cm L 5 ft 10 178cm to 6 ft 2 188cm XL 6 ft 1 185cm to 6 ft 6 198cm Frame 29 in 6061 Alu, boost spacing, 135mm rear travel, 73mm BSA BB Thru axle M12, pitch 1.5, length 174mm, thread length 20mm Forks RockShox Psylo Gold, 29 in , 140mm, stealth boost, 42mm offset Rear shock RockShox Deluxe Select Plus, 210x55 Handlebar 780mm wide, 20mm rise, 3deg upsweep, 6deg backsweep, bar bore 31.8mm Stem 45mm extension, 31.8mm clamp Grips Calibre ribbed lock on grips Headset FSA No. 57e tapered, ZS44 upper, ZS56 lower Saddle Calibre trail Dropper post X Fusion Manic LC, XS&S125mm, M150mm, L&XL 170mm Seatclamp Alloy single bolt 34.9mm Chainset Shimano Deore Pedals Flat pedals BB 73mm threaded BSA BB Chain Shimano M6100, 118 links, 12 speed Cassette Shimano, CSM6100, 12 speed, 10 51T Shifters Shimano M6100 12 speed Rear derailleur Shimano RD M6100 Front Tyre Maxxis 29 in x2.5 in Minion DHF 60Tpi Exo, tubeless ready Rear Tyre Maxxis 29 in x2.4 in Dissector 60Tpi Exo, tubeless ready Rims 30mm ID, can be set up tubeless Front hub Shimano HB TC500 15 B, 110mm, 32h Rear hub Shimano FH TC500 HM B, 148mm, 32h Thru axle M12, pitch 1.5, length 172mm, thread length 20mm Brakes Shimano BL M6100BR M6120 Front Rotor Shimano SM RT10, 180 Rear Rotor Shimano SM RT10, 180mm Please note some minor specification changes may occur without notice. Any changes will use equivalent or higher quality parts. Building your bike Bikes purchased online are delivered boxed and will require assembly before they can be used. View the GO Outdoors Bike Assembly guide for more info, including step by step and video instruction guides. We are happy to assemble your bike for FREE at any GO Outdoors store with a bike servicing department this excludes all GO Express stores, and selected other GO locations. Please call ahead to confirm that you would like us to build your bike. You can find store details and phone numbers here. Every bike sold also comes with FREE 6 wee...Read More...»»