Trek Procaliber 8 2025|S (29″)|M (29″)|ML (29″)|L (29″)|XL (29″)|Plasma Grey Pearl|Power Surge/Mercury

Description

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

It’s right for you if…

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 the best in performance and reliability for every ride

The tech you get

A lightweight Alpha Platinum Aluminium hardtail frame with modern XC geometry and 148 mm boost spacing for stiff support under power. 120 mm of trail-smoothing front suspension from a RockShox Recon Gold RL fork with Debon Air 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.

The final word

When you’re ready to take on race day, reach for the Procaliber 8. 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.

Why you’ll love it

1. You get modern geometry and 120 mm of front suspension that keeps you in the attack on climbs and crushing confidently on descents
2. It balances the accessible price of an alloy hardtail with the performance of its carbon cohorts
3. You get the perfect blend of components with Shimano SLX and XT shifting and hydraulic brakes
4. Its Tubeless Ready 29in wheels keep rolling resistance down while helping fight flats
5. Internal cable routing keeps your ride quiet, reduces maintenance and looks sleek

Specifications

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)

Wheels

Hub front Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle Hub rear Shimano TC500 alloy, CentreLock, 148×12 mm thru axle Rim Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve Tyre Bontrager Sainte-Anne Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29×2.20″ Tyre part Bontrager TLR sealant, 180 ml/6 oz Max tyre size Frame: 29×2.40″, Fork: See manufacturer

Drivetrain

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)

Components

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, 750mm width Grips Bontrager XR Trail Comp, nylon lock-on *Stem Size:S
Bontrager alloy, 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, 160mm 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

Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).