Specialized Stumpjumper Comp Alloy 2021
2021 Mountain
Estimate price |
3,500$
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 29" -
Travel Front 140mm -
Travel Rear 130mm -
Fork Fox Rhythm Float 34
-
Groupset NX Eagle -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
S1
149cm - 160cm
S2
157cm - 172cm
S3
165cm - 180cm
S4
172cm - 188cm
S5
177cm - 193cm
S6
188cm - 203cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
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
Suspension 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
Drivetrain
Rear Derailleur
SRAM NX Eagle, 12-speed
Shift Levers
SRAM NX Eagle, trigger, 12-speed
Cassette
SRAM NX Eagle, 12-speed, 11-50t
Crank
SRAM NX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm, Steel, 30T
Bottom Bracket
SRAM DUB, BSA 73mm, Threaded
Chain
SRAM NX Eagle, 12-speed
Wheels
Front Hub
Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h
Rear Hub
Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
Rims
Roval 29, hookless alloy, 30mm inner width, tubeless ready
Spokes
DT Swiss Industry
Tires
Butcher, GRID casing, GRIPTON® compound, 29x2.3"
Brakes
Brakes
SRAM G2 R, 4-piston caliper, hydraulic disc, 200mm
Cockpit
Stem
Alloy Trail Stem, 35mm bar bore
Handlebar
Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm width
Seat
Saddle
Bridge Comp, Hollow Cr-mo rails, 155/143mm
Seatpost
X-Fusion Manic, infinite adjustable, remote SRL LE lever, 34.9 (S1:100mm, S2: 125mm, S3: 150mm, S4/S5: 170mm, S6: 190mm)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | S1 | S2 | S3 | S4 | S5 | S6 |
|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.5 mm | 1.42 mm | 1.38 mm | 1.33 mm | 1.28 mm | 1.22 mm |
| Bottom Bracket Height | 334 mm | 339 mm | 339 mm | 339 mm | 339 mm | 339 mm |
| Front Center | 726 mm | 746 mm | 770 mm | 799 mm | 828 mm | 863 mm |
| Rake | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 126 mm | 126 mm | 126 mm | 126 mm | 126 mm | 126 mm |
| Stack | 620 mm | 615 mm | 625 mm | 633 mm | 641 mm | 651 mm |
| Reach | 412 mm | 432 mm | 452 mm | 477 mm | 502 mm | 532 mm |
| Top Tube Length | 547 mm | 565 mm | 588 mm | 617 mm | 645 mm | 678 mm |
| Seat Tube Angle | 78.2 ° | 78.2 ° | 77.9 ° | 77.7 ° | 77.5 ° | 77.3 ° |
| Seat Tube Length | 385 mm | 385 mm | 405 mm | 425 mm | 445 mm | 465 mm |
| Head Tube Angle | 65 ° | 65 ° | 65 ° | 65 ° | 65 ° | 65 ° |
| Head Tube Length | 100 mm | 100 mm | 110 mm | 120 mm | 130 mm | 140 mm |
| Chainstay Length | 446 mm | 446 mm | 446 mm | 446 mm | 456 mm | 456 mm |
| Wheelbase | 1170 mm | 1190 mm | 1214 mm | 1243 mm | 1282 mm | 1317 mm |
| Bottom Bracket Drop | 40 mm | 35 mm | 35 mm | 35 mm | 35 mm | 35 mm |
| Standover Height | 744 mm | 744 mm | 752 mm | 755 mm | 779 mm | 786 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 149 cm | 157 cm | 165 cm | 172 cm | 177 cm | 188 cm |
| Rider Max Height | 160 cm | 172 cm | 180 cm | 188 cm | 193 cm | 203 cm |
About this model
Stumpjumper Comp Alloy belongs to the Specialized Stumpjumper model. 352 bikes variations carry this model name so far. You can easily view all of the Specialized Stumpjumper bikes models from 2021, here.
Model range prices
The most economical model, the Specialized Stumpjumper Alloy 2021 has a starting price of 2500$. Specialized S-Works Stumpjumper EVO 2021 on the other hand is the most expensive at 11000$.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Average price for Trail bikes
Our math shows that the average cost of a dependable Trail bike is 2762$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Trail bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
Furthermore, this bike was made available in 2021 for 3500$. Comparing this to the average Trail bike price, we see that the price is 26.72% more expensive.
Stumpjumper Comp Alloy components
Fork
The Stumpjumper Comp Alloy comes factory-installed with the Fox Rhythm Float 34 fork. This has a travel range of 140mm. Bike forks are perfect to absorb shocks and provide a great riding experience overall. To sum it all, when buying a bike, ensure that you look for a fork capable of decent travel.
Rear Shock
Specialized Stumpjumper Comp Alloy bike has the FOX FLOAT DPS Performance model installed, and has a travel of 130mm. Rear shocks give you increased comfort, control, and traction, which is important when cornering or braking. This allows you to ride faster on bumpy roads. To sum up, always consider getting a bike that has a rear shock as well.
Wheels
The Stumpjumper Comp Alloy 2021 bike is equipped with 29″ aluminum wheels when leaving the factory. Having 29″ wheels means that you need less fork travel, leading to a reduction of the pedal bob effect. However, the 29″ wheels will add a little more weight to the bike itself.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Hydraulic Disc brakes. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.
Sizes
Stumpjumper Comp Alloy comes in 6 sizes, that range from 149 cm – 203 cm (4.89 ft – 6.66 ft). In conclusion, you won’t have a problem finding one that suits you.
Dropper post
A dropper post is included with the Stumpjumper Comp Alloy. Therefore, climbing or descending will be a breeze.