Specialized Stumpjumper ST Alloy 27.5 2020
2020 Mountain
Estimate price |
2,010$
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 29" -
Travel Front 130mm -
Travel Rear 130mm -
Fork RockShox Recon Silver RL
-
Groupset SX Eagle -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
M5 alloy chassis and rear end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel
Suspension Fork
RockShox Recon RL, Motion Control damper with low-speed compression to lockout, 46mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel
Rear Shock
X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x45mm
Drivetrain
Rear Derailleur
SRAM SX Eagle, 12-speed
Shift Levers
SRAM SX Eagle, trigger, 12-speed
Cassette
SRAM PG-1210 Eagle, 11-50t
Crank
SRAM SX Eagle, Powerspline, 170mm, Steel, 32T
Bottom Bracket
SRAM Powerspline
Chain
SRAM SX Eagle, 12-speed
Wheels
Front Hub
Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h
Rear Hub
Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
Rims
Double-wall alloy, 27mm internal width
Spokes
Stainless, 14g
Tires
Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"
Brakes
Brakes
Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
Cockpit
Stem
Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
Handlebar
Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm,
Grips
Specialized Sip Grip, half-waffle, slip-on
Seat
Saddle
Body Geometry Myth:155 XS/S, Body Geometry Henge:143 M/L/XL, steel rails
Seatpost
TransX dropper, 34.9mm, XS: 100mm, S: 125mm, ML/XL: 150mm Travel
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.44 mm | 1.43 mm | 1.37 mm | 1.37 mm | 1.33 mm |
| Bottom Bracket Height | 325 mm | 336 mm | 336 mm | 336 mm | 336 mm |
| Front Center | 696 mm | 726 mm | 748 mm | 780 mm | 812 mm |
| Rake | 46 mm | 46 mm | 46 mm | 46 mm | 46 mm |
| Trail | 103 mm | 112 mm | 112 mm | 112 mm | 112 mm |
| Stack | 578 mm | 589 mm | 593 mm | 620 mm | 634 mm |
| Reach | 402 mm | 412 mm | 432 mm | 452 mm | 477 mm |
| Top Tube Length | 541 mm | 567 mm | 592 mm | 624 mm | 657 mm |
| Seat Tube Angle | 76.5 ° | 75.3 ° | 75 ° | 74.6 ° | 74.2 ° |
| Seat Tube Length | 380 mm | 380 mm | 410 mm | 455 mm | 505 mm |
| Head Tube Angle | 66.5 ° | 65.5 ° | 65.5 ° | 65.5 ° | 65.5 ° |
| Head Tube Length | 100 mm | 105 mm | 110 mm | 140 mm | 155 mm |
| Chainstay Length | 429 mm | 429 mm | 429 mm | 429 mm | 429 mm |
| Wheelbase | 1124 mm | 1154 mm | 1176 mm | 1209 mm | 1240 mm |
| Bottom Bracket Drop | 28 mm | 21 mm | 21 mm | 21 mm | 21 mm |
| Standover Height | 739 mm | 749 mm | 754 mm | 766 mm | 767 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
About this model
Stumpjumper ST Alloy 27.5 completes the Specialized Stumpjumper model. There are 352 bikes that carry this model name. You can easily view all of the Specialized Stumpjumper bikes models from 2020, here.
Model range prices
Specialized Stumpjumper ST Alloy 27.5 2020 is the most affordable bike of this model and has a price of 2010$. On the other hand, Specialized S-Works Stumpjumper SRAM AXS 29 2020, is the most expensive and costs 10520$.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Trail bikes average price
According to our calculations, the average cost of a Trail bike that is reliable is 2762$. However, even if your budget is less than the average, you might still be able to get a top-quality Trail bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
This bike was released in 2020 and its price was 2010$. In conclusion, this bike price is 37.41% lower than the price of the average Trail bike.
Internal Cable Routing
This bike has an internal cable routing. As a result, this helps to preserve the bike’s cables. No more cables around your bike.
Stumpjumper ST Alloy 27.5 components
Fork
The fork installed on this bike is the RockShox Recon Silver RL model. The travel on this model is 130mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Rear Shock
Specialized Stumpjumper ST Alloy 27.5 bike has the X-Fusion 02 Pro RL model installed, and has a travel of 130mm. Bike rear shocks are a great way to increase comfort on the bike and give you more control when riding on technical trails. In short, a full-suspension bike will give you the smoothest ride possible.
Wheels size
When it comes to wheels, the Stumpjumper ST Alloy 27.5 bike is equipped with the 29″ aluminum model. Having 29″ wheels means that you need less fork travel, leading to a reduction of the pedal bob effect. However, if you’re not a tall person, you might find it difficult to adapt to this wheel size.
Brakes
For your safety, it is important to have quality breaks on your bike. Specialized Stumpjumper ST Alloy 27.5 has Hydraulic Disc brakes installed. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.
Sizes
Specialized Stumpjumper ST Alloy 27.5 bike has 5 sizes, in the range of 156 cm – 195 cm (5.12 ft – 6.4 ft). In conclusion, finding one for you shouldn’t be a problem.
Dropper post
Every bike should have a dropper post, and this one does. If used correctly, a dropper post gives you more faith, maneuverability, and greater control over your bike.