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Specialized Stumpjumper Expert Carbon 27.5 2019


Specialized Stumpjumper Expert Carbon 27.5 click to zoom image
Pricing
£5149.99

Qty marked * exceeds current stock level.
*Delivery Restrictions
Model Year 2019
Options S Gloss/Storm Grey/Rocket Red - Typically 3-5 Days
M Gloss/Storm Grey/Rocket Red - Typically 3-5 Days
L Gloss/Storm Grey/Rocket Red - Typically 3-5 Days
XL Gloss/Storm Grey/Rocket Red - Typically 3-5 Days
Style

Ever had a ride that felt more like an experience than just a ride? Us too and we've been chasing that feeling ever since. With the Stumpjumper Expert 27.5 we've bottled up that feeling and put into a radical new frame design that's so agile lively and in-tune with the trail the bike feels like an extension of your body. Seriously it's going to make you rethink how a trail bike should ride.

Our design goal for the new Stumpjumper was simple - build the ultimate trail bike one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another your brain gets confused with the imbalance and the bike feels unstable. In order to fix this we had to get to work on dialing-in the materials shapes and the layout.

We started by creating our own mountain-specific stiffness test and then we looked at the layout with Finite Element Analysis (FEA) to see where we could get the biggest stiffness improvements. This led to a big discovery: The Large and X- Large frames needed more front-end stiffness while the Smalls and Mediums were just fine. We were able to create a frame design that was 20% more efficient. And in the end this proved to be one of the lightest trail frames on the market today.

When designing the frame with the stiffness targets being a main goal we developed a radical new sidearm design. The front-end and rear-end are connected at three points and the sidearm helps keep all these points super stiff and connected all while taking about 100 grams out of the rear-end. More explicitly this minimizes frame flex when the rear suspension is active.

We continued down the suspension path with a custom Rx Trail Tune on both the fork and rear shock. Suspension performance is highly dependent on frame wheel and rider size so we use our Rx Tune to get each bike to land in the middle of the adjustment spectrum and this gives you the biggest possible range to fine-tune your ride. Another focal point of the tune was matching the suspension characteristics between wheel sizes - we developed a specific Rx Tune for each platform. So no matter what wheel size you prefer you'll get perfectly linear suspension.

Steps were also taken to make this bike easy to live with. Threaded bottom brackets make a triumphant return and we made room for up to a 3.0

Frame FACT 11m, full carbon chassis and rear end, asymmetrical design, 27.5 Trail Geometry, SWATTM Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel
Rear Shock: RockShox Deluxe RT3, Rx Trail Tune, rebound and 3-position compression adjust, 210x52.5mm
Forks RockShox Pike RC, DebonAir, rebound/low-speed compression adjust, tapered steerer, 46mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm BoostTM, 150mm of travel
Rear Derailleur SRAM GX Eagle, 12-speed
Shifters SRAM GX Eagle, trigger, 12-speed
Chainset Truvativ Descendant, aluminum, BoostTM 148, 170mm crankarm, 24mm spindle 32T
Bottom Bracket SRAM GXP
Chain SRAM GX Eagle, 12-speed w/ PowerLock®
Freewheel SRAM GX Eagle, 12-speed, 10-50t
Stem Specialized Trail, forged alloy, 4-bolt, 5mm rise
Handlebars 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
Rear Brake SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor
Rims Roval Traverse Carbon 27.5, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built
Front Hub Specialized, sealed cartridge bearings, 15x110mm spacing, 28h
Rear Hub Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
Spokes DT Swiss Industry
Tyres F: Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"
R: Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"
Tubes: Presta, 40mm valve
Saddle Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm
Seatpost Command Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel
Pedals Specialized Dirt
Grips Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.
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