Specialized Stumpjumper Comp Alloy 29" Mountain Bike 2023 - Trail Full Suspension MTB
Don't worry metal fans, the Specialized Stumpjumper Comp Alloy is still alive and well, and with one of the most advanced alloy MTB frames ever developed. With its asymmetrical design, all-new geometry, refined kinematics, and a build kit that strikes the optimal combination of performance and value, it's ready to hit the dirt.
Key Features:
- Alloy frame with dialled trail bike geometry
- Fox DPS Performance shock controls the 130mm of rear wheel travel
- Fox Float 34 Rhythm fork offers 140mm of plush suspension travel
- SRAM NX Eagle 1x12 speed drivetrain offers a very wide range of gears
- 29” wheels for fast rolling performance
- Colours: gloss sage green/forest green, satin cast umber/clay
- Sizes: S1, S2, S3, S4, S5, S6 (see sizing tab for more info)
- The Specialized Stumpjumper Comp Alloy is available with 0% APR finance
Specialized Stumpjumper Review
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 | FOX FLOAT 34 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset,140mm of travel |
| Rear Shock | FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 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 | SRAM G2 R, 4-piston caliper, hydraulic disc, 200mm |
| Rear Brake | SRAM G2 R, 4-piston caliper, hydraulic disc, 180mm |
| Rear Mech | SRAM NX Eagle, 12-speed |
| Shifters | SRAM NX Eagle, trigger, 12-speed |
| Speed | 12 |
| Rims | Roval 29, hookless alloy, 30mm inner width, tubeless ready |
| Front Hub | Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h |
| Rear Hub | Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h |
| Spokes | DT Swiss Industry |
| 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 NX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm, 30T |
| Chain | SRAM NX Eagle, 12-speed |
| Pedals | Resin Platform |
Mountain Bike Size Chart
|
Height
|
Bike Size
|
Mountain Bike Size
|
|
4’8” – 5’1”
143 – 155 cm
|
XXS
|
13” (33 cm)
|
|
5’1” – 5’4”
155 – 163 cm
|
XS
|
15” (38 cm)
|
|
5’4” – 5’7”
163 – 170 cm
|
S
|
16” (41 cm)
|
|
5’7” – 5’10”
170 – 178 cm
|
M
|
18” (46cm)
|
|
5’10” – 6’0”
178 – 183 cm
|
L
|
19” (48cm)
|
|
6’0” – 6’3”
183 – 191 cm
|
XL
|
20” (51 cm)
|
|
6’3” – 6’5”
191 – 196 cm
|
XXL
|
21” (53 cm)
|
|
6’5” – 6’9”
196 – 205 cm
|
XXXL
|
22” (56 cm)
|
* Mountain bikes are sized differently to road bikes. Typically, they are sized in inches as the first MTBs were produced in the USA. European brands like Lapierre and Haibike like to use centimetres for all their bikes. The measurements of their mountain bikes doesn’t match their road bikes but are like a simple conversion from the inches measurement. This is why we have included cm measurements in brackets for the Mountain bike column.
Read our bike size guide for more information on sizing.
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Specialized Stumpjumper Comp Alloy 29" Mountain Bike 2023 - Trail Full Suspension MTB
Really pleased with Tredz. I’d been looking for this bike for a while and found it at Tredz. Delivery was super fast and everything was set up well. An incredibly easy process that just feels good to experience. Definitely recommend!
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*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
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