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 ST Expert 29" Mountain Bike 2019
Comfortably shred the rowdy stuff and still hold the wheel of your XC chums when the trail goes uphill with the Specialized Stumpjumper ST Expert 29" Mountain Bike; a ride that can genuinely lay claim to being capable of doing it all. The slightly steeper geometry delivers precise handling and responsiveness when you need to make sharp adjustments and tackle tight turns and combined with shorter RockShox front and rear travel, this bike will hold speed in all areas.
Improved stiffness thanks to new materials and tube shapes delivers better power transfer and helps to ensure that the balance between hands and feet is optimised, so the bike always feels stable. A new sidearm design keeps the front and rear connected and stiff, especially when the rear shock is active, and yet overall the weight is down, making this one of the lightest trail bikes on the market.
Should you need it there's room for a 3.0" tyre and you can drop the centre of gravity and slacken off the geometry a touch to suit your ride style. Chain slap on bumpy ground has been eliminated thanks to a new ribbed chainstay protector that more or less silences the drivetrain and with fully tubed internal routing it couldn't be easier to change cables.
The SRAM GX1 Eagle drivetrain is lightweight, high-performing and durable in all conditions so that your gear shifting is always crisp and the expanded range is optimised with a 10-50t cassette and 32T chainring so that you always have the perfect gear for the terrain. Rolling on Roval Traverse carbon 29 wheels, this lightweight bike will eat up the terrain, hold momentum and handle predictably - it's ready to race and ready to shred.
Features
- Specialized FACT 11m carbon frame
- Roval 29" carbon wheels
- SRAM GX1 Eagle groupset
- SRAM Guide R hydraulic disc brakes
- RockShox Pike RC fork is known for its trail performance, has stiff stanchions, a Charger damper and plenty of sensitivity
- Easy cable routing
- A new chain silencer
Technical Specification
| FRAME | Specialized FACT 11m, full carbon chassis and rear end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel |
| FORK | RockShox Pike RC, DebonAir, rebound / low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 130mm of travel |
| REAR SHOCK | RockShox Deluxe RT3, Rx Trail Tune, rebound & 3-position compression adjust, 190x42.5mm |
| STEM | Specialized Trail, forged alloy, 4-bolt, 5mm rise |
| HANDLEBAR | Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp |
| GRIPS | Specialized Sip grip, half-waffle, S/M |
| FRONT BRAKE | SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm |
| REAR BRAKE | SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm |
| BRAKE LEVERS | SRAM |
| 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, aluminium, Boost™ 148, 170mm crankarm, 24mm spindle, 30T chainring |
| CHAIN | SRAM GX Eagle, 12-speed |
| FRONT WHEEL | Roval Traverse Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built, sealed cartridge bearings, 15x110mm spacing |
| REAR WHEEL | Roval Traverse Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built, sealed cartridge bearings, 12x148mm thru-axle |
| FRONT TYRE | Specialized Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" |
| REAR TYRE | Specialized Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" |
| SADDLE | Specialized Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm |
| SEATPOST | Specialized Command Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S |
| PEDALS | Specialized Dirt |
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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