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The Procaliber 8 is a cross-country mountain bike built for hot laps and singletrack, balancing race-ready performance with an alloy frame.
The Procaliber 8 is a cross-country mountain bike built for hot laps and singletrack, balancing race-ready performance with an alloy frame.
Trek

Trek Procaliber 8 XC MTB in Fury Red

£1,300.00
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Trek Procaliber 8 XC MTB in Fury Red

Season:2026

Brand:Trek

Code:57370RED

The Procaliber 8 is a cross-country mountain bike built for hot laps and singletrack.

This bike confidently rolls the fine line between race-ready and pocket-friendly with an alloy frame that's built with modern geometry for handling fast corners and rough sections of trail while keeping you ready to sprint up climbs. A 12-speed Shimano SLX and XT drivetrain and 120 mm RockShox Recon Gold fork seal the deal with all the gears and rock-smoothing comfort you need.

You want to dive into XC racing on a hardtail that's built to soar up climbs and stay composed through the rough stuff. You want to save some dough with a sturdy alloy frame, and don't mind upgrading your components over time.

This bike features a lightweight Alpha Platinum Aluminium hardtail frame with modern XC geometry and 148 mm boost spacing for stiff support under power. It has 120 mm of trail-smoothing front suspension from a RockShox Recon Gold RL fork with DebonAir spring, Motion Control damper and lockout. A clean shifting blend of 12-speed Shimano XT and SLX components, Tubeless-Ready Bontrager Kovee wheels, a Bontrager Line dropper post with internal routing and hydraulic disc brakes.

When you're ready to take on race day, reach for the Procaliber 7. This alloy hardtail has a speedy attitude with modern cross-country geometry that's dialled for hammering up climbs and keeps its composure on loose descents.

Features:

  • You get modern geometry and 120 mm of front suspension that keeps you in the attack on climbs and crushing confidently on descents
  • It balances the accessible price of an alloy hardtail with the performance of its carbon cohorts
  • You get the perfect blend of components with Shimano SLX and XT shifting and hydraulic brakes
  • Its Tubeless Ready 29 inch wheels keep rolling resistance down while helping fight flats
  • Internal cable routing keeps your ride quiet, reduces maintenance and looks sleek
Technical Information
  • Frame
    Alpha Platinum Aluminium, tapered head tube, internal routing, BSA 73, hidden rack and kickstand mounts, UDH, Boost148, 12 mm thru axle
  • Fork
    RockShox Recon Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, 15 mm Maxle Stealth, 120mm travel
  • Max compatible fork travel
    130 mm (540 mm axle-to-crown)
  • Hub front
    Shimano TC500 alloy, CentreLock, 110x15 mm thru axle
  • Hub rear
    Shimano TC500 alloy, CentreLock, 148x12 mm thru axle
  • Skewer rear
    Bontrager Switch thru axle, removable lever
  • Rim
    Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve
  • Tyre
    Maxxis Rekon Race, tubeless ready, EXO casing, folding bead, 60 tpi, 29x2.40"
  • Tyre part
    Bontrager TLR sealant, 180 ml/6 oz
  • Rim strip
    Bontrager TLR
  • Max tyre size
    Frame: 29x2.40", Fork: See manufacturer
  • Shifter
    Shimano SLX M7100, 12-speed
  • Rear derailleur
    Shimano XT M8100, long cage
  • Crank
    Size: S , M E*thirteen Helix, 30T steel ring, 73 mm spindle length, 52 mm chainline, 170 mm length Size: ML , L , XL E*thirteen Helix, 30T steel ring, 73 mm spindle length, 52 mm chainline, 175 mm length
  • Bottom bracket
    Shimano BB-MT501 BSA
  • Cassette
    Shimano SLX M7100, 10-51T, 12-speed
  • Chain
    Shimano SLX M7100, 12-speed
  • Pedal
    VP-536 nylon platform
  • Max. chainring size
    1x: 34T (55 mm chain line), min 30T (52 mm chain line)
  • Saddle
    Verse Short, chromoly rails, 145 mm width
  • Seatpost
    Size: S , M Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length Size: ML , L Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 31.6 mm, 410 mm length Size: XL Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 31.6 mm, 450 mm length
  • Handlebar
    Size: S , M Bontrager Comp, alloy, 31.8 mm, 5 mm rise, 720 mm width Size: ML , L , XL Bontrager Rhythm Comp, alloy, 31.8 mm, 15 mm rise, 750 mm width
  • Grips
    Trek Line Comp, nylon lock-on
  • Stem
    Size: S Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length Size: M , ML Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length Size: L Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length Size: XL Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length
  • Head set
    Semi-integrated, sealed cartridge bearing, alloy cups, 1-1/8" top, 1.5" bottom
  • Brake
    Shimano hydraulic disc, MT4100 lever, MT410 calliper
  • Brake rotor
    Size: S , M , ML , L , XL Shimano RT54, CentreLock, 160 mm Size: S , M , ML , L , XL Shimano RT54, CentreLock, 180 mm
  • Rotor size
    Max brake rotor sizes – Frame: 180 mm, Fork: see fork manufacturer
  • Weight
    M - 12.78 kg / 28.18 lbs (with TLR sealant, no tubes)
  • Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Sizing Information

Road & Gravel

SizeRider HeightInseam
49156 - 163 cm
(5'1" - 5'4")		74 - 77 cm
(29" - 30")
52163 - 168 cm
(5'4" - 5'6")		76 - 79 cm
(30" - 31")
54168 - 174 cm
(5'6" - 5'9")		78 - 82 cm
(31" - 32")
56174 - 180 cm
(5'9" - 5'11")		81 - 85 cm
(32" - 33")
58180 - 185 cm
(5'11" - 6'1")		84 - 87 cm
(33" - 34")
61185 - 191 cm
(6'1" - 6'3")		86 - 90 cm
(34" - 35")


Mountain & City

SizeRider HeightInseam
XS145 - 155 cm69 - 73 cm
S155 - 165 cm74 - 78 cm
M165 - 176 cm79 - 83 cm
M/L173 - 180 cm81 - 86 cm
L177 - 188 cm84 - 89 cm
XL188 - 195 cm89 - 91 cm

Please note that this is a general guide, and the best way to determine the correct size for a specific model is to consult Trek's website for that particular model. Additionally, factors such as inseam length, riding style, and personal preference may also affect the ideal size for a given rider.

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