2019 Specialized Sj Fsr Men Pro Carbon 29 Ckd Gloss / Navy / White Features
"Berms, jumps, ruts—hawt laps." By now, you've probably seen the new Stumpjumper video—it's a must if you haven't. Not only is it shred-inspiring, but it clearly shows what the Stumpjumper Pro 29 is all about—being the ultimate trail bike.
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" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard metric shocks. We revamped the SWAT™ box, too, making it sleeker, lighter, and with more volume. And customization is furthered with a Flip Chip that lets you to dial-in your Stumpy to your riding style. Switch it from High to Low and it drops your bottom bracket 6mm and slackens the head tube by half-a-degree. Little details also jump out to surprise you, like a newly designed ribbed chainstay protector that makes chain slap a thing of the past and nearly silences the drivetrain. Lastly, we seriously couldn’t make cable routing any easier on carbon models. Full tubes can be found throughout the carbon frame, so all you have to do is push the cable and it’ll come out the other end. No more lazy loop, hidden stashes of magnets, pokey spokes, or pillows to cry in.
For the build, you get a components package that's the perfect blend of performance and affordability—a full SRAM GX Eagle drivetrain, SRAM Guide RS disc brakes, FOX Factory front and rear suspension (150/140mm of travel respectively), and Roval Traverse Carbon 29 wheels.
Product Information
Product Information
Bottom Bracket |
SRAM GXP |
Cassette |
SRAM GX Eagle, 12-speed, 10-50t |
Chain |
SRAM GX Eagle, 12-speed |
Chainrings |
Steel, 30T |
Crankset |
Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 24mm spindle |
Fork |
FOX FLOAT 36 Factory, GRIP2 damper, Kashima Coating, 15x110mm, 51mm offset, 150mm of travel |
Frame |
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, 140mm of travel |
Front Brake |
SRAM Guide RS, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor |
Front Hub |
Specialized, sealed cartridge bearings, 15x110mm spacing, 28h |
Front Tire |
Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" |
Grips |
Specialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness |
Handlebars |
Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp |
Inner Tubes |
Standard, Presta valve |
Pedals |
Specialized Dirt |
Rear Brake |
SRAM Guide RS, hydraulic disc, organic pads, Guide S4 4-piston caliper |
Rear Derailleur |
SRAM GX Eagle, 12-speed |
Rear Hub |
DT Swiss 350, Star Ratchet, 36t engagement, SRAM XD driver body, 12mm thru-axle, 148mm spacing, 28h |
Rear Shock |
FOX FLOAT DPX2 Factory, Rx Trail Tune, EVOL Air sleeve, Kashima coat, 3-position adjustment w/ Open Mode adjustment, 210x50mm |
Rear Tire |
Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6" |
Rims |
Roval Traverse Carbon 29, hookless carbon, 30mm inner width, hand-built 2Bliss Ready, 28h |
-
Free Shipping
Can’t wait another minute to get your hands on the latest gear?
Order online and pick up at your local Incycle or take advantage of FREE shipping on orders over $49.99 (free shipping on bikes over $1500) Exclusions Apply. -
Chat with us
We are here for you with over 30 years of experience supporting our cycling community.
With a great team behind the scenes online, reach out to us via our live chator email us at support@rocknroad.com with any questions.