Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Specialized Stumpjumper Carbon Expert 27.5" Mountain Bike 2018
The ultimate all-rounder for tackling the trails, the Specialized Stumpjumper Carbon Expert 27.5" Mountain Bike is the ideal choice for anyone looking for a high-performance full suspension offering.
With 27.5" Roval Traverse Carbon wheels, this bike handles superbly around tight twisting trails while bringing a smile to the rider's face. The rims are tubeless-ready, so you can add a tubeless tyre and say goodbye to pinch flats.
The front chassis is constructed from FACT 9r carbon fibre; a lightweight and reliably stiff material that's a joy to ride. The rear end is M5 aluminium for additional peace of mind when mixing it up over rocky terrain. The rear suspension has a generous 150mm of travel, helping you move forward in comfort.
Up front, another 150mm of plush travel is afforded by the FOX 34 fork. On the handlebar you'll find SRAM GX Eagle shifters, controlling the 12-speed rear derailleur with precision and speed. The Truvativ Descendant one-by crankset has a 30mm spindle, which combines with the 10-50t 12-speed cassette to deliver a huge range of gears for riding up any gradient.
FEATURES:
- FACT 9m carbon fibre Trail chassis with Stumpjumper FSR M5 alloy rear end
- Fully enclosed cable routing
- Integrated SWAT™ door zero-hassle storage
- FOX 34 fork with 150mm of plush travel
- SRAM GX Eagle groupset
Please note: The image is shown for representation of colour way only, specification subject to change at any time. Bicycles do not come with pedals unless otherwise specified.
Technical Specification
| FRAME | FACT 9m carbon front chassis with Specialized M5 Aluminum rear end, 27.5 Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel |
| FORK | FOX 34 Performance 27.5, 44mm offset, 15x110mm thru-axle, 150mm of travel |
| REAR SHOCK | RockShox Monarch RT3, Rx Trail Tune, AUTOSAG, rebound and 3-position compression adjust, 197x48mm |
| STEM | Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise |
| HANDLEBAR | Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp |
| FRONT BRAKE | SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor (L/XL size) / 180mm rotor (S/M size) |
| REAR BRAKE | SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor (L/XL size) / 160mm rotor (S/M size) |
| FRONT DERAILLEUR | N/A |
| REAR DERAILLEUR | SRAM GX Eagle, 12-speed |
| SHIFT LEVERS | SRAM GX Eagle, trigger, 12-speed |
| CASSETTE | SRAM GX Eagle, 12-speed, 10-50t |
| CRANKSET | Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 30mm spindle |
| FRONT WHEEL | Specialized sealed cartridge bearings 15x110mm spacing 24h hub, DT Swiss Industry stainless 3-cross 2.0" spokes, Roval Traverse Carbon 27.5" hookless 30mm inner width tubeless-ready hand-built rim |
| REAR WHEEL | Specialized sealed cartridge bearings 12x148mm thru-axle 28h hub, DT Swiss Industry stainless 3-cross 2.0" spokes, Roval Traverse Carbon 27.5" hookless 30mm inner width tubeless-ready hand-built rim |
| FRONT TYRE | Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6" |
| REAR TYRE | Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6" |
| SADDLE | Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm |
| SEATPOST | Command Post IRcc, 12-position micro-height adjustable, alien head design, bottom mount cable routing, remote SRL lever, 30.9mm, S |
| ACCESSORIES | Specialized Platform, Cr-Mo, 9/16" spindle pedals |
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. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
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