Specialized Stumpjumper Alloy 29" Mountain Bike 2022 - Trail Full Suspension MTB
The Specialized Stumpjumper Alloy brings all of the new, lust-worthy features of the Stumpjumper-like new suspension kinematics and geometry-into a full-alloy package that's both lightweight and extremely durable. Top it off with a no-fuss SRAM SX 12-speed groupset and you have the perfect ride for your next trail adventure.
Key Features:
- Alloy frame with dialled trail bike geometry
- X-Fusion O2 Pro RL Shock controls the 130mm of rear wheel travel
- RockShox 35 Silver fork offers 140mm of plush suspension travel
- SRAM SX Eagle 1x12 speed drivetrain offers a very wide range of gears
- 29” wheels for fast rolling performance
- Colours: Satin Black/Smoke, Satin Blaze/Black
- Sizes: S1, S2, S3, S4, S5, S6 (see sizing tab for more info)
- The Specialized Stumpjumper Alloy 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 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 promise
- 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
- Free Cycle Plan insurance voucher
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | Alloy chassis and rear-end, asymmetrical design, 29 Trail Geometry, horst pivot BB adjustment, threaded BB, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel |
Fork | RockShox 35 Silver, Solo Air, 44mm offset, rebound adjust, TurnKey lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 140mm of travel |
Rear Shock | X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout S1:190x42.5mm, S2-S6: 190x45mm |
Stem | Alloy Trail Stem, 35mm bar bore |
Bars | Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm width |
Front Brake | Tektro Gemini Comp, hydraulic disc, resin pad, 200mm |
Rear Brake | Tektro Gemini Comp, hydraulic disc, resin pad, 180mm |
Rear Mech | SRAM SX Eagle, 12-speed |
Shifters | SRAM SX Eagle, trigger, 12-speed |
Speed | 12 |
Front Tyre | Butcher, GRID casing, GRIPTON® compound, 29x2.3" |
Rear Tyre | Purgatory, GRID Casing, GRIPTON® compound, 29x2.3" |
Seat Post | TranzX dropper, 34.9mm, XS-S: 100mm, M: 120mm, L/XL: 150mm Travel |
Saddle | Body Geometry Bridge Saddle, steel rails |
Chainset | SRAM SX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm, 30T |
Chain | SRAM SX Eagle, 12-speed |
Specialized Stumpjumper 2022 Size Chart
Size |
Height (cm) |
Height (inches) |
XS – S1 |
150 – 160 |
4’11” – 5’3” |
S – S2 |
157 – 173 |
5’2” – 5’8” |
M – S3 |
165 – 180 |
5’5” – 5’11” |
L – S4 |
173 – 188 |
5’8” – 6’2” |
XL – S5 |
178 – 193 |
5’10” – 6’4” |
XXL – S6 |
188 - 203 |
6’2” – 6’3” |
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 2022 Geometry Charts
|
S1 |
S2 |
S3 |
S4 |
S5 |
S6 |
Crank Length |
165mm |
170mm |
170mm |
170mm |
170mm |
175mm |
Stem Length |
40mm |
40mm |
50mm |
50mm |
50mm |
50mm |
Handlebar Width |
780mm |
780mm |
780mm |
780mm |
780mm |
780mm |
Wheelbase |
1152mm |
1175mm |
1200mm |
1228mm |
1268mm |
1302mm |
Chainstay Length |
432mm |
432mm |
432mm |
432mm |
442mm |
442mm |
Front Centre |
724mm |
746mm |
770mm |
800mm |
829mm |
863mm |
Stack (Low BB) |
614mm |
613mm |
622mm |
632mm |
641mm |
650mm |
Seat Tube Length |
385mm |
385mm |
405mm |
425mm |
445mm |
465mm |
Bike Standover Height |
730mm |
734mm |
744mm |
749mm |
757mm |
757mm |
Headtube Length |
95mm |
100mm |
110mm |
120mm |
130mm |
140mm |
Headtube Angle (Low BB) |
65° |
65° |
65° |
65° |
65° |
65° |
Min Seatpost Insertion |
80mm |
80mm |
80mm |
80mm |
80mm |
80mm |
Max Seatpost Insertion |
220mm |
220mm |
240mm |
260mm |
280mm |
300mm |
Headtube Angle (High BB) |
65.5° |
65.5° |
65.5° |
65.5° |
65.5° |
65.5° |
Seatpost Length |
100 mm |
125 mm |
150 mm |
170mm |
170 mm |
190 mm |
Saddle Width |
155mm |
155mm |
143mm |
143mm |
143mm |
143mm |
Trail (Low BB) |
126mm |
126mm |
126mm |
126mm |
126mm |
126mm |
Trail (High BB) |
123mm |
123mm |
123mm |
123mm |
123mm |
123mm |
BB Drop (High BB) |
40mm |
35mm |
35mm |
35mm |
35mm |
35mm |
Top-Tube Length (Horizontal) |
563mm |
583mm |
605mm |
632mm |
660mm |
692mm |
BB Height (High BB) |
335mm |
340mm |
340mm |
340mm |
340mm |
340mm |
BB Drop (Low BB) |
47mm |
42mm |
42mm |
42mm |
42mm |
42mm |
Stack (High BB) |
610mm |
609mm |
618mm |
627mm |
636mm |
646mm |
BB Height (Low BB) |
328mm |
333mm |
333mm |
333mm |
333mm |
333mm |
Fork Rake/Offset |
44mm |
44mm |
44mm |
44mm |
44mm |
44mm |
Seat Tube Angle (High BB) |
76.5° |
76.5° |
76.5° |
76.5° |
76.5° |
76.5° |
Reach (Low BB) |
410mm |
430mm |
450mm |
475mm |
500mm |
530mm |
Seat Tube Angle (Low BB) |
76° |
76° |
76° |
76° |
76° |
76° |
Fork Length (Full) |
550mm |
550mm |
550mm |
550mm |
550mm |
550mm |
Reach (High BB) |
415mm |
435mm |
455mm |
480mm |
505mm |
535mm |
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Specialized Stumpjumper Alloy 29" Mountain Bike 2022 - Trail Full Suspension MTB
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Tredz's as a company, fantastic, very professional . Had a new of bikes over the years and always use Tredz. The bike is really good, you can do all types of terrain and it's not going to let you down. Really easy to set up, good components , 10 out 10 from me.