Procaliber 8
Trek
Trail
Procaliber 8 is an alloy trail mountain bike (2025), by Trek, in the Procaliber series. Rider-wise, it fits a wide range of riders thanks to its fit flexibility, leaning toward a balanced riding position, and is best for smoother trails and efficient rolling. Its profile is strongest in areas like strong climbing friendliness for sustained uphill riding, strong value-for-money versus many similar bikes, and strong speed potential on smoother terrain. The trade-off to keep in mind is a firmer ride feel than comfort-first options. Compare this bike across categories on MatchBikes.com to see whether a nearby segment gives you a better fit.
7.5
Rating

+18
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Score Summary
Performance
7.0
Value
9.8
Fit
6.7
Performance
Built for speed and efficiency
Speed
6.7
Medium
Climbing Efficiency
9.9
Mountain Goat
Suspension
6.0
Confident trail control
Fit
Dialed-in Fit & Comfort
Riding Position
6.3
Balanced
Fit Flexibility
7.2
Adjustable
Ride Comfort
6.6
Firm
Value
Value for Money
9.8
Exceptional Value
Surface Range
Flow TrailsSpecifications
General
Brand
Trek
Model
Procaliber 8
Year
2025
Price
$1,574
Weight
12.48 kg
Category
Mountain
Sub Category
Trail
Groupset
XT, SLX
Frame
Frame
Alpha Platinum Aluminium, tapered head tube, internal routing, BSA 73, hidden rack and kickstand mounts, UDH, Boost148, 12 mm thru axle
Suspension Fork
RockShox Recon Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 42mm offset, Boost110, 15 mm Maxle Stealth, 120mm travel
Suspension Type
Hardtail
Drivetrain
Shift Levers
Shimano SLX M7100, 12-speed
Rear Derailleur
Shimano XT M8100, long cage
Cassette
Shimano SLX M7100, 10-51T, 12-speed
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
Chain
Shimano SLX M7100, 12-speed
Wheels
Front Hub
Shimano TC500 alloy, CentreLock, 110x15 mm thru axle
Rear Hub
Shimano TC500 alloy, CentreLock, 148x12 mm thru axle
Rims
Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve
Tires
Bontrager Sainte-Anne Pro XR, Tubeless Ready, dual compound, aramid bead, 60 tpi, 29x2.20"
Brakes
Brake Type
Hydraulic Disc
Brake Description
Shimano hydraulic disc, MT4100 lever, MT410 calliper
Cockpit
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
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
Bontrager XR Trail Comp, nylon lock-on
Seat
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
Geometry
| Measurement | SM | MD | MD/LG | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.516 mm | 1.428 mm | 1.38 mm | 1.335 mm | 1.284 mm |
| Bottom Bracket Height | 309 mm | 309 mm | 309 mm | 309 mm | 309 mm |
| Front Center | 688 mm | 713 mm | 728 mm | 743 mm | 794 mm |
| Rake | 43 mm | 43 mm | 43 mm | 44 mm | 43 mm |
| Trail | 112 mm | 112 mm | 112 mm | 111 mm | 112 mm |
| Stack | 614 mm | 614 mm | 614 mm | 614 mm | 642 mm |
| Reach | 405 mm | 430 mm | 445 mm | 460 mm | 500 mm |
| Top Tube Length | 577 mm | 598 mm | 613 mm | 628 mm | 677 mm |
| Seat Tube Angle | 74.3 ° | 74.3 ° | 74.3 ° | 74.3 ° | 74.3 ° |
| Seat Tube Length | 390 mm | 420 mm | 440 mm | 460 mm | 510 mm |
| Head Tube Angle | 67 ° | 67 ° | 67 ° | 67 ° | 67 ° |
| Head Tube Length | 90 mm | 90 mm | 90 mm | 90 mm | 120 mm |
| Chainstay Length | 430 mm | 430 mm | 435 mm | 435 mm | 440 mm |
| Wheelbase | 1110 mm | 1135 mm | 1155 mm | 1171 mm | 1227 mm |
| Bottom Bracket Drop | 64 mm | 64 mm | 64 mm | 64 mm | 64 mm |
| Standover Height | 747 mm | 749 mm | 758 mm | 763 mm | 791 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 155 cm | 164 cm | 173 cm | 177 cm | 187 cm |
| Rider Max Height | 166 cm | 176 cm | 180 cm | 189 cm | 195 cm |




























































