Trek • Mountain Bike
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.
Specifications
*Please note - spec applies to all sizes unless listed separately
| Frameset | |
| 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
|
| Wheels | |
| 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
|
| 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, 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 | |
| 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).
|
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
How tall are you?
To measure your height, stand up straight, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.
What is your inside leg?
How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inside leg measurement. Your inside leg is very important to your final bike size so please measure carefully.
| Size | S | M | ML | L | XL |
| Rider Height | 155 - 165 cm 5'1" - 5'5" |
165 - 177 cm 5'5" - 5'10" |
173 - 180 cm 5'8" - 5'11" |
177 - 188 cm 5'10" - 6'2" |
188 - 195 cm
6'2" - 6'5" |
| Inseam | 74 - 78 cm 29" - 31" |
79 - 83 cm 31" - 33" |
81 - 86 cm 32" - 34" |
84 - 89 cm 33" - 35" |
89 - 91 cm 35" - 36" |
Geometry diagram labelling frame measurements A to N. Each label corresponds to a row in the geometry table below.
All measurements provided in cm unless otherwise stated.
| Frame size letter | S | M | ML | L | XL |
| Wheel size | 29" | 29" | 29" | 29" | 29" |
| A — Seat tube | 39 | 42 | 44 | 46 | 51 |
| B — Seat tube angle | 71.0° | 71.5° | 72.0° | 72.5° | 73.0° |
| Effective seat tube angle | 74.3° | 74.3° | 74.3° | 74.3° | 74.3° |
| C — Head tube length | 9 | 9 | 9 | 9 | 12 |
| D — Head angle | 67.0° | 67.0° | 67.0° | 67.0° | 67.0° |
| E — Effective top tube | 58 | 60 | 61 | 63 | 68 |
| F — Bottom bracket height | 31 | 31 | 31 | 31 | 31 |
| G — Bottom bracket drop | 6 | 6 | 6 | 6 | 6 |
| H — Chainstay length | 43 | 43 | 44 | 44 | 44 |
| I — Offset | 4 | 4 | 4 | 4 | 4 |
| K — Wheelbase | 111 | 114 | 116 | 117 | 123 |
| L — Standover | 75 | 75 | 76 | 76 | 79 |
| M — Frame reach | 41 | 43 | 45 | 46 | 50 |
| N — Frame stack | 61 | 61 | 61 | 61 | 64 |