BOSSNUT
Calibre
Trail
BOSSNUT is an alloy trail mountain bike (2023), by Calibre, from the Bossnut lineup. Rider-wise, it fits riders looking for a balanced off-road setup, with a balanced riding position, while being well suited to natural trails and mixed off-road terrain. Its profile is strongest in areas like strong climbing friendliness for sustained uphill riding and capable suspension support for rougher terrain. That said, the main trade-off is a firmer ride feel than comfort-first options and less emphasis on outright speed than speed-focused builds. If this looks close to what you want, compare this bike on MatchBikes.com against similar models.
6.6
Rating

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Score Summary
Performance
6.2
Fit
7.2
Performance
Built for speed and efficiency
Speed
4.5
Very Low
Climbing Efficiency
8.9
Climber
Suspension
6.0
Confident trail control
Fit
Dialed-in Fit & Comfort
Riding Position
6.2
Balanced
Fit Flexibility
6.9
Moderately Adjustable
Ride Comfort
7.6
Firm
Value
Surface Range
Natural TrailsSpecifications
General
Brand
Calibre
Model
BOSSNUT
Year
2023
Weight
15.2 kg
Category
Mountain
Sub Category
Trail
Groupset
SX Eagle
Wheels
27.5"
Frame
Frame
6061 Hydroformed alloy frame, tapered headtube, forged rocker link, 130mm travel, 12 x 142mm bolt through rear end
Suspension Fork
Rockshox Recon RL Solo Air 130mm, alloy tapered steerer, 15 x 100mm Maxle, gloss black with fast black stanchions
Rear Shock
Rockshox Monarch R, custom tune, 130mm travel, 190 x 51 eye to eye, gloss black.
Suspension Type
Full
Drivetrain
Shift Levers
SRAM SX Eagle
Rear Derailleur
SRAM SX Eagle
Cassette
SRAM 12 Speed, 11 - 50T
Crank
SRAM SX Eagle Powerspline, 170, 32T
Wheels
Front Hub
Formula 32H, 6 bolt
Rear Hub
Formula 32h, 6 bolt
Rims
WTB ST i29 TCS 2.0
Tires
WTB Vigilante High-Grip Comp, 27.5 x 2.3 front. WTB Trail Boss comp, 27.5 x 2.25 rear
Brakes
Brake Type
Hydraulic Disc
Brake Description
SRAM Level T
Cockpit
Stem
Calibre 45mm length, 31,8mm bar
Handlebar
Calibre Alloy, 780mm length, 30mm rise, 31.8mm OD
Seat
Saddle
Calibre Trail
Seatpost
Calibre Alloy, 30.9 x 350mm
Geometry
| Measurement | SM | MD | LG | XL |
|---|---|---|---|---|
| Bottom Bracket Height | 331 mm | 331 mm | 331 mm | 331 mm |
| Reach | 415.5 mm | 434 mm | 452 mm | 468 mm |
| Top Tube Length | 577 mm | 597 mm | 618 mm | 637 mm |
| Seat Tube Angle | 74.5 ° | 74.5 ° | 74.5 ° | 74.5 ° |
| Seat Tube Length | 375 mm | 430 mm | 480 mm | 530 mm |
| Head Tube Angle | 66 ° | 66 ° | 66 ° | 66 ° |
| Head Tube Length | 112 mm | 117 mm | 127 mm | 137 mm |
| Chainstay Length | 428 mm | 428 mm | 428 mm | 428 mm |
| Bottom Bracket Drop | 24 mm | 24 mm | 24 mm | 24 mm |
| Wheels | 27" | 27" | 27" | 27" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |




























































