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.
Product Highlights
Lightweight and stiff, this unique carbon layup offers unrivalled handling and pedalling efficiency.
Hear only the sound of tyres on dirt, a ribbed chainstay protector silences your ride from chain noise.
Lightweight and durable, unique shaping and composite design allows for a virtual FlexStay pivot.
A high and low geometry FlipChip delivers 7mm of BB and half a degree of head angle adjustment.
Specialized Stumpjumper Expert Mountain Bike
Agile, lively and so, so fun. The Specialized Stumpjumper Expert Mountain Bike is designed to boost your trail game, making it the perfect tool to improve your riding. 130mm of trail-optimised suspension provides unbeatable descending prowess for its travel category, with revised suspension kinematics making full use of the travel on offer. State of the art frame technology sees serious weight reductions for a feather-weight frame, without sacrificing durability and stiffness.
Do not let the short travel numbers fool you - the Stumpjumper Expert descends like it is on rails, with its lively ride character looking to pop every lip and roost every berm. Featuring a more progressive leverage curve than prior models, the 130mm of travel on offer feels bottomless on big hits and reactive on chattery terrain. Improved pedalling characteristics and a steep seat-tube angle allows this bike to decimate tough climbs, making it an excellent choice for the modern trail rider.
A roomy top-tube and low BB provide confidence for the steeps, keeping you planted through rough terrain. Taking notes from the Enduro and Demo designs, Rider-First Engineered™ sizing allowing you to pick a frame size that suits your riding, not your build. Low seat-tube heights allow you to size up for stability, or size down for a more playful ride - the choice is yours. A yoke mounted flip-chip offers half a degree of head angle adjustment, helping to further fine-tune your fit.
Improved SWAT™ Door integration provides more storage for your tools, nutrition and spares, and a ribbed chainstay protector dampens unwanted drivetrain noise. The Expert is geared towards high-performance riding, and the parts specification reflects its fast intentions. Tubeless-ready 29" Roval Traverse wheels offer quick engagement and the strength to deal with the occasional hang up, and the SRAM XO1 never misses a beat for precise shifting. SRAM G2 RSC brakes offer high-quality stopping power, providing glue-like grip when combined with the Specialized GRIPTON® tyres.
Highlights
- 29" 11m full-carbon chassis with asymmetrical design
- Redesigned suspension kinematics for improved on-trail performance
- Shock-mounted flip-chip for geometry adjustment
- 130mm of trail-optimised travel
- FOX FLOAT 34 Performance Elite fork and FOX FLOAT DPS Performance elite rear shock with custom RX Trail Tune
- SRAM XO1 12-speed groupset with G2 RSC four-piston hydraulic brakes
- Rider-First Engineered™ sizing
- Improved SWAT™ storage space
Technical Specification
| Frame | Specialized FACT 11m carbon chassis and rear-end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, flip-chip Head Tube/Bottom Bracket adjustment, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel |
| Fork | FOX FLOAT 34 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset,140mm of travel |
| Rear Shock | FOX FLOAT DPS Performance Elite, Rx Trail Tune, EVOL Air sleeve, 3-position adjustment w/ Open Mode Adjustment, 190x45mm |
| Bottom Bracket | SRAM DUB, BSA 73mm, Threaded |
| Stem | Specialized Alloy Trail Stem, 35mm bar bore |
| Handlebar | Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm width |
| Grips | Deity Knuckleduster, Black |
| Front Brake | SRAM G2 RSC, 4-piston calliper, hydraulic disc, 200mm |
| Rear Brake | SRAM G2 RSC, 4-piston calliper, hydraulic disc, 180mm |
| Brake Levers | SRAM G2 RSC |
| Rear Derailleur | Sram X01 Eagle, 12-speed |
| Shift Levers | SRAM X01, trigger, 12-speed |
| Chain | SRAM XX1, 12 speed, 12-speed |
| Cassette | SRAM XG-1275, 12-speed, 10-52t |
| Crankset | SRAM Descendant 7K, DUB, S1 - 165mm, S2-S5 - 170mm, S6 - 175mm |
| Front Wheel | Rim - Roval Traverse 29 Alloy, 30mm inner width, hand-built, 2Bliss Ready / Hub - Roval, sealed cartridge bearings, 15x110mm spacing, 28h |
| Rear Wheel | Rim - Roval Traverse 29 Alloy, 30mm inner width, hand-built, 2Bliss Ready / Hub - Roval DT Swiss 360, 3-pawl design, SRAM XD driver body, 12mm thru-axle, 148mm spacing, 28h |
| Front Tyre | Specialized Butcher, GRID TRAIL casing, GRIPTON® compound, 29x2.3”, tubeless-ready, folding |
| Rear Tyre | Specialized Purgatory, GRID casing, GRIPTON® compound, 29x2.3”, tubeless-ready, folding |
| Saddle | Specialized Bridge Comp, Hollow Cr-mo rails, 155/143mm |
| Seatpost | X-Fusion Manic, infinite adjustable, remote SRL LE lever, 34.9 (S1 - 100mm, S2 - 125mm, S3 - 150mm, S4/S5 - 170mm, S6 - 190mm) |
| Pedals | Available to be purchased separately |
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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