Specialized Stumpjumper Expert Mountain Bike 2021 - Trail Full Suspension MTB
With the all-new Specialized Stumpjumper Expert, we've bottled up that "new bike day" feeling and put it into a radically new trail bike that's so agile, lively, and in-tune with the trail, it feels like an extension of your body. Hard climbs? No problem. Rowdy descents, easy. The Stumpjumper Expert is going to make you rethink how a trail bike should ride.
Key Features:
- FACT 11m carbon frame with dialled trail bike geometry & SWAT door
- Fox DPS Performance Elite shock controls the 130mm of rear wheel travel
- Fox Float 34 Performance Elite fork offers 140mm of plush suspension travel
- SRAM XO1 1x12 speed drivetrain offers a very wide range of gears
- Roval Traverse 29” wheels for fast rolling performance
- Colours: Gloss Satin Carbon/Smoke
- Sizes: S1, S2, S3, S4, S5, S6 (see sizing tab for more info)
- The Specialized Stumpjumper Expert is available with 0% APR finance
THE TRAIL BENCHMARK When we set out to design the all-new Stumpjumper, we pursued some hefty goals. We went after the lightest-possible weight that sacrifices nothing to durability, a stiff chassis that corners on rails, and a geometry that everyone can enjoy, all with the best suspension kinematics we know how to design. Turns out, you can have your cake and eat it too with the new Stumpjumper.
130MM OF TRAIL-TAMING TRAVEL All the travel in the world is useless without the proper kinematics, which is why we kept it at the forefront of the new Stumpjumper design. With the learnings from the suspension design on the Enduro, and over 1,000 hours of field and suspension lab development, we’ve greatly improved the pedalling performance, all while creating the capable, efficient, lively feelings that you long for. We increased anti-squat, so the suspension better-resists pedal bob and then, we further-improved bump performance on square-edge hits. Bottom line? The all-new Stumpjumper descends with complete control yet climbs with ease.
PROGRESSIVE GEOMETRY The S-Sizing geometry of the new Stumpjumper hits the progressive sweet spot. Long, low, slack, a short offset fork, a steeper seat tube angle—they’re all the talk of the town because they make your ride better. With Flip Chip adjustability you’re able to further fine-tune your fit, ensuring that your new Stumpjumper performs flawlessly on whatever terrain you choose.
RIDER-FIRST ENGINEERED™ Rider-First Engineered™ frames use a size-specific approach to ride characteristics that ensures every frame performs flawlessly. So, whether you’re a Grom riding an S1, or in need of the lengthy S6, you’ll experience the same ride characteristics—on-rail cornering and balanced front and rear stiffness, all at the lightest-possible weight: 2,250 grams (S-Works, Medium, with rear shock).
All Tredz bikes are:
- Fully built & ready to ride
- Fully checked & tested by Cytech qualified mechanics
- Available with 0% APR finance on any basket over £99
- UK price match guarantee
- 365 day no hassle returns
- Free delivery in the UK Mainland on a date that suits you
In the box with every Tredz bike is:
- Free Tredz 9 key trail tool
- Free Tredz pedal spanner
- Free basic pedals
- Tredz drawstring kit bag
- 16 point quality control check sheet
- Basic bike setup instructions
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | FACT 11m carbon chassis and rear-end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, BB adjustment, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, 130mm of travel |
Fork | FOX FLOAT 34 Performance Elite, GRIP2 damper, 15x110mm, 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 |
Stem | Alloy Trail Stem, 35mm bar bore |
Bars | Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 30mm rise, 780mm, 35mm clamp |
Front Brake | SRAM G2 RSC, 4-piston caliper, hydraulic disc, 200mm |
Rear Brake | SRAM G2 RSC, 4-piston caliper, hydraulic disc, 180mm |
Rear Mech | Sram X01 Eagle, 12-speed |
Shifters | SRAM X01, trigger, 12-speed |
Speed | 12 |
Rims | Roval Traverse 29 Alloy, 30mm inner width, hand-built, 2Bliss Ready |
Front Hub | Roval, sealed cartridge bearings, 15x110mm spacing, 28h |
Rear Hub | Roval DT Swiss 360, 3-pawl design, SRAM XD driver body, 12mm thru-axle, 148mm spacing, 28h |
Spokes | DT Swiss Competition Race |
Front Tyre | Butcher, GRID casing, GRIPTON® compound, 29x2.3" |
Rear Tyre | Purgatory, GRID Casing, GRIPTON® compound, 29x2.3" |
Seat Post | X-Fusion Manic, infinite adjustable, remote SRL LE lever, 34.9 (S1:100mm, S2: 125mm, S3: 150mm, S4/S5: 170mm, S6: 190mm) |
Saddle | Bridge Comp, Hollow Cr-mo rails, 155/143mm |
Chainset | SRAM Descendant 7K, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm, 30T |
Chain | SRAM GX Eagle, 12-speed |
Pedals | Resin Platform |
Specialized Stumpjumper 2021 Size Chart
S Size |
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
Conventional size |
XS |
S |
M |
L |
XL |
XXL |
Rider Height |
4’11” – 5’3” |
5’2” – 5’8” |
5’5” – 5’11” |
5’8” – 6’2” |
5’10” – 6’4” |
6’2” – 6’8” |
Rider Height (cm) |
150 - 160 |
158 - 172 |
165 - 180 |
172 - 188 |
178 - 193 |
188 - 200 |
Find your S Size
Determining your S-Size is easy. If you rode a Medium before, then S-3 will be your equivalent size. But if you want a more nimble ride, you should drop down to an S2. Want a bike that’s more stable at speed? Bump up to an S4. Following are examples of three riders, all 5’8” (1.73m), who chose three different sizes.
Specialized Stumpjumper 2021 Geometry Charts
Flip Chip Setting = High |
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
Stack (mm) |
610 |
609 |
618 |
627 |
636 |
646 |
Reach (mm) |
415 |
435 |
455 |
480 |
505 |
535 |
Headtube Length (mm) |
95 |
100 |
110 |
120 |
130 |
140 |
Headtube Angle |
65.5° |
65.5° |
65.5° |
65.5° |
65.5° |
65.5° |
BB Height (mm) |
335 |
340 |
340 |
340 |
340 |
340 |
BB Drop (mm) |
40 |
35 |
35 |
35 |
35 |
35 |
Trail (mm) |
123 |
123 |
123 |
123 |
123 |
123 |
Fork Length (mm) |
550 |
550 |
550 |
550 |
550 |
550 |
Fork Rake/Offset (mm) |
44 |
44 |
44 |
44 |
44 |
44 |
Front Centre (mm) |
724 |
746 |
770 |
800 |
829 |
863 |
Chainstay Length (mm) |
432 |
432 |
432 |
432 |
442 |
442 |
Wheelbase (mm) |
1152 |
1175 |
1200 |
1228 |
1268 |
1302 |
Toptube Length horizontal (mm) |
563 |
583 |
605 |
632 |
660 |
692 |
Standover Height (mm) |
730 |
734 |
744 |
749 |
757 |
757 |
Seat Tube Length (mm) |
385 |
385 |
405 |
425 |
445 |
465 |
Seat Tube Angle (mm) |
76.5° |
76.5° |
76.5° |
76.5° |
76.5° |
76.5° |
Max Seatpost Insertion (mm) |
220 |
220 |
240 |
260 |
280 |
300 |
Min Seatpost Insertion (mm) |
80 |
80 |
80 |
80 |
80 |
80 |
Flip Chip Setting = Low |
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
Stack (mm) |
614 |
613 |
622 |
632 |
641 |
650 |
Reach (mm) |
410 |
430 |
450 |
475 |
500 |
530 |
Headtube Length (mm) |
95 |
100 |
110 |
120 |
130 |
140 |
Headtube Angle |
65° |
65° |
65° |
65° |
65° |
65° |
BB Height (mm) |
328 |
333 |
333 |
333 |
333 |
333 |
BB Drop (mm) |
47 |
42 |
42 |
42 |
42 |
42 |
Trail (mm) |
126 |
126 |
126 |
126 |
126 |
126 |
Fork Length (mm) |
550 |
550 |
550 |
550 |
550 |
550 |
Fork Rake/Offset (mm) |
44 |
44 |
44 |
44 |
44 |
44 |
Front Centre (mm) |
724 |
746 |
770 |
800 |
829 |
863 |
Chainstay Length (mm) |
432 |
432 |
432 |
432 |
442 |
442 |
Wheelbase (mm) |
1152 |
1175 |
1200 |
1228 |
1268 |
1302 |
Toptube Length horizontal (mm) |
563 |
583 |
605 |
632 |
660 |
692 |
Standover Height (mm) |
730 |
734 |
744 |
749 |
757 |
757 |
Seat Tube Length (mm) |
385 |
385 |
405 |
425 |
445 |
465 |
Seat Tube Angle (mm) |
76° |
76° |
76° |
76° |
76° |
76° |
Max Seatpost Insertion (mm) |
220 |
220 |
240 |
260 |
280 |
300 |
Min Seatpost Insertion (mm) |
80 |
80 |
80 |
80 |
80 |
80 |
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