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Trek Procaliber 8 27.5"/29" Mountain Bike 2019

★★★★★ ★★★★★
MSP £1,700.00 Save 20%
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Product ID: 1073594

Despite being a hardtail, the Procaliber 8 27.5"/29" Mountain Bike features Trek’s IsoSpeed decoupler which helps give the frame much more compliance than normal, whilst maintaining the efficient power transfer and low weight of a rigid frame.

The SRAM NX Eagle groupset and Shimano MT500 hydraulic brakes perform tirelessly to make shifting quick and braking reliably powerful.

Four great reasons to buy your bike from Sigma Sports

sigma sports expert advice and rider id
Expert Advice & Rider ID

Sigma Sports has one objective - to help you find your perfect bike. Our friendly, knowledgeable staff ask you a series of questions to understand what type of rider you are and the type of riding you do. We can then identify the style of bike that best suits your needs.

sigma sports finding the right bike size
Finding the right size

Riding a bike that fits you perfectly will help keep you injury-free and ensure you enjoy riding further for longer in total comfort. We check your measurements on a jig to ensure your optimal set-up.

sigma sports bike handover
Bike Handover

When you collect your new bike we'll double-check your position and make any micro-adjustments if required. We'll also discuss the controls on your bike as well as maintenance tips.

sigma sports first free safety check
First free safety check

We offer a free safety check after six weeks or 200 miles, so you can keep riding in confidence. Visit us now in-store to discuss your new bike.

Trek Procaliber 8 27.5"/29" Mountain Bike 2019

The hydroformed aluminium frame of the Procaliber 8 27.5"/29" Mountain Bike feature’s Trek’s IsoSpeed decoupler, which allows the seat tube a small amount of movement independent of the top tube in order to add more compliance without adding the weight or the complexity of full suspension. The RockShox Recon Gold RL Solo Air fork adds 100mm of travel to the front end, with Boost110 keeping the steering as precise as possible, and a remote lockout provides efficiency on smoother trails or tarmac.

The Bontrager Kovee Comp 23 wheels and XR2 Team Issue tyres are both ready to be set up tubeless, allowing lower pressures to be used without the risk of pinch punctures for greater comfort and grip. With a single 30 tooth front ring and a huge 12-speed 10-50 cassette, the range of gears is sufficient for the very steepest, toughest of climbs, whilst Shimano’s MT500 hydraulic disc brakes ensure that the descents can be enjoyed with confidence.


  • Trek Alpha Platinum Aluminium frame with IsoSpeed
  • RockShox Recon Gold RL Solo Air with 100mm of travel
  • Shimano MT500 hydraulic disc brakes
  • Bontrager Kovee Comp 23 Tubeless Ready wheels with Bontrager XR2 Team Issue tyres
  • SRAM NX Eagle groupset

Please note: size 15.5” uses a 27.5” wheelset, larger sizes have 29” wheels

Technical Specification

FRAME Trek Alpha Platinum Aluminium, IsoSpeed, tapered head tube, internal derailleur routing, balanced post mount brake, Boost148, G2 Geometry on 29ers
FORK RockShox Recon Gold RL, Solo Air, Motion Control damper, remote lockout, tapered steerer, G2 Geometry with 51 mm offset on 29ers, Boost110, 100mm travel
STEM Bontrager Elite, 31.8mm, 7-degree, Blendr compatible
HANDLEBAR Bontrager Comp alloy, 31.8mm, 5mm rise, 720 mm width
FRONT BRAKE Shimano MT500 hydraulic disc
REAR BRAKE Shimano MT500 hydraulic disc
BRAKE LEVERS Shimano MT500 hydraulic disc
REAR DERAILLEUR SRAM NX Eagle, Type 3 Roller Bearing Clutch
SHIFT LEVERS SRAM NX Eagle, 12-speed
CASSETTE SRAM XG-1275 Eagle, 10-50t, 12-speed
CRANKSET SRAM NX Eagle Dub, 30t Direct Mount
FRONT WHEEL Bontrager Kovee Comp 23, Tubeless Ready, 54T Rapid Drive, Boost110
REAR WHEEL Bontrager Kovee Comp 23, Tubeless Ready, 54T Rapid Drive, Boost148
FRONT TYRE Bontrager XR2 Team Issue, Tubeless Ready, 120 tpi, aramid bead, 29x2.20˝ (15.5”
REAR TYRE Bontrager XR2 Team Issue, Tubeless Ready, 120 tpi, aramid bead, 29x2.20˝ (15.5”
SADDLE Bontrager Montrose Comp
SEATPOST Bontrager Pro, OCLV Carbon, 31.6mm, 0mm offset
WEIGHT LIMIT 136kg (bike, rider and cargo)

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools.

To see how you build your new bike once you receive it, please see our bike assembly page here.

Please note all bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.

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