Rear tire: 27.5×2.6.
Velopedia Bicycle Archive
2020 Specialized Stumpjumper Comp Alloy 27.5
Original specifications: geometry for 4 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2020
- Category
- Mountain
- Original MSRP
- $3,320.00
- Sizes
- S, M, L, XL
- Colors
- Satin Cool Grey / Team Yellow
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · archived image · original MSRP · geometry
- Archive ID
- 900003824
Model history 1 other year
Original buildAluminum
Frameset
| Frame Construction | 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, 150mm of travel |
|---|---|
| Frame Material | Aluminum |
| Fork | FOX FLOAT RHYTHM, 34, GRIP damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel |
| Fork Material | Aluminum |
| Rear Shock | FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x52.5mm |
Drivetrain
| Shifters | SRAM NX Eagle, trigger, 12-speed |
|---|---|
| Rear Derailleur | SRAM NX Eagle, 12-speed |
| Crankset | SRAM NX Eagle, DUB, 170mm; chainrings: Steel, 30T |
| Bottom Bracket | SRAM DUB, BSA 73mm, Threaded |
| BB Shell Width | 73 mm |
| Cassette | SRAM NX Eagle, 12-speed, 11-50t |
| Chain | SRAM NX Eagle, 12-speed |
Brakes
| Brakes | (F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm |
|---|
Cockpit & Contact Points
| Handlebar | Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm, |
|---|---|
| Stem | Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise |
| Saddle | Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm |
| Seatpost | X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L: 150mm, XL: 170mm |
Wheels & Tires
| Hubs | (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h |
|---|---|
| Rims | Roval Traverse 27.5, hookless alloy, 30mm inner width, tubeless ready |
| Spokes | DT Swiss Industry |
| Front Tire | Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6" |
| Rear Tire | Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6" |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 20 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 380 mm | 380 mm | 410 mm | 455 mm |
| Effective top tube | 544 mm | 570 mm | 595 mm | 627 mm |
| Head tube | 100 mm | 105 mm | 110 mm | 140 mm |
| Head-tube angle | 66.5° | 65.5° | 65.5° | 65.5° |
| Seat-tube angle | 76.5° | 75.3° | 75° | 74.6° |
| Chainstay / rear center | 432 mm | 432 mm | 432 mm | 432 mm |
| Wheelbase | 1127 mm | 1157 mm | 1179 mm | 1212 mm |
| Bottom-bracket drop | 28 mm | 21 mm | 21 mm | 21 mm |
| Bottom-bracket height | 325 mm | 336 mm | 336 mm | 336 mm |
| Reach | 405 mm | 415 mm | 435 mm | 455 mm |
| Stack | 581 mm | 592 mm | 596 mm | 623 mm |
| Standover height | 742 mm | 752 mm | 757 mm | 769 mm |
| Fork offset / rake | 46 mm | 46 mm | 46 mm | 46 mm |
| Front center | 696 mm | 726 mm | 748 mm | 780 mm |
| Trail | 103 mm | 112 mm | 112 mm | 112 mm |
| Fork length / axle-to-crown | 522 mm | 542 mm | 542 mm | 542 mm |
| Seatpost length | 375 mm | 438 mm | 438 mm | 438 mm |
| Crank length | 170 mm | 170 mm | 170 mm | 170 mm |
| Stem length | 45 mm | 45 mm | 45 mm | 45 mm |
| Handlebar width | 780 mm | 780 mm | 780 mm | 780 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Parts & serviceability
Find replacement parts

SRAM XX1 Eagle 12-Speed Chain Copper, 126 links
126 links
Replacement option · verify fit
More parts (6)

CeramicSpeed BSA29 MTB Bottom Bracket Black, English Threaded, Sram DUB MTB
Sram DUB MTB
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 23 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2020 Specialized Stumpjumper Comp Alloy 27.5 · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: 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, 150mm of travel · Fork: FOX FLOAT RHYTHM, 34, GRIP damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel · Aluminum
Suspension
Evaluate the suspension →Archived: Fork: FOX FLOAT RHYTHM, 34, GRIP damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel · Rear shock: FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x52.5mm
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM NX Eagle, trigger, 12-speed · Rear derailleur: SRAM NX Eagle, 12-speed · Crankset: SRAM NX Eagle, DUB, 170mm; chainrings: Steel, 30T · Bottom bracket: SRAM DUB, BSA 73mm, Threaded · Cassette: SRAM NX Eagle, 12-speed, 11-50t · Chain: SRAM NX Eagle, 12-speed
Brakes
Inspect the brakes →Archived: Brakes: (F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm
Wheels and tires
Check wheels and tires →Archived: Rims: Roval Traverse 27.5, hookless alloy, 30mm inner width, tubeless ready · Hubs: (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h · Front tire: Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6" · Rear tire: Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"
Controls and contact points
Archived: Handlebar: Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm, · Stem: Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise · Seatpost: X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L: 150mm, XL: 170mm · Saddle: Body Geometry Phenom Comp, hollow Cr-Mo rails, 143mm
Before and during the test ride
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





