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 Expert 29" / 27.5+ Mountain Bike 2018
A superb all-rounder, the Specialized Stumpjumper Carbon Expert 29" Mountain Bike has the clearance width for 27.5+ wheels too (eg 6Fattie, sold separately). This versatile full suspension offering utilises the larger wheel standards to deliver a smoother ride over even the most rugged terrain.
The Fox 34 Performance fork delivers 150mm of plush travel, with a three-position micro adjust damper, so you can dial in your preferred level of resistance. Another 150mm of travel is available to the rear shock, so the bike will float over lumpy terrain with undeterred speed.
A SRAM GX Eagle groupset with SRAM Guide R hydraulic brakes deliver fantastic mechanical performance and modulated braking alike. 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 with SRAM Guide R hydraulic disc brakes
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 w/ Specialized M5 Aluminum rear end, 29" / 27.5+ (6Fattie) Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, ManFu link, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 135mm of travel |
| FORK | FOX 34 Performance 29, 44mm offset, 3 Position Micro Adjust damper 15x110mm Kabolt 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 Revolution spokes, Roval Traverse Carbon 29" hookless 30mm inner width tubeless-ready hand-built rim |
| REAR WHEEL | Specialized sealed cartridge bearings 12x148mm thru-axle 28h hub, DT Swiss Revolution spokes, Roval Traverse Carbon 29" hookless 30mm inner width tubeless-ready hand-built rim |
| FRONT TYRE | Butcher, GRID casing, Gripton compound, 2Bliss Ready, 29 x 2.6" |
| REAR TYRE | Butcher, GRID casing, Gripton compound, 2Bliss Ready, 29 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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