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2020 Specialized Stumpjumper Comp Alloy 27.5

Original specifications: geometry for 4 published sizes.

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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
Campaign
Original buildAluminum

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Satin Cool Grey / Team Yellow

Frameset

Frame ConstructionM5 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 MaterialAluminum
ForkFOX FLOAT RHYTHM, 34, GRIP damper, 44mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel
Fork MaterialAluminum
Rear ShockFOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x52.5mm

Drivetrain

ShiftersSRAM NX Eagle, trigger, 12-speed
Rear DerailleurSRAM NX Eagle, 12-speed
CranksetSRAM NX Eagle, DUB, 170mm; chainrings: Steel, 30T
Bottom BracketSRAM DUB, BSA 73mm, Threaded
BB Shell Width73 mm
CassetteSRAM NX Eagle, 12-speed, 11-50t
ChainSRAM 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

HandlebarSpecialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm,
StemSpecialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise
SaddleBody Geometry Phenom Comp, hollow Cr-Mo rails, 143mm
SeatpostX-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
RimsRoval Traverse 27.5, hookless alloy, 30mm inner width, tubeless ready
SpokesDT Swiss Industry
Front TireButcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"
Rear TireEliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"

Geometry

4 sizes · 20 measurements

Frame measurements by size.

All geometry measurements4 sizes · 20 measurements
MeasurementSMLXL
Seat tube380 mm380 mm410 mm455 mm
Effective top tube544 mm570 mm595 mm627 mm
Head tube100 mm105 mm110 mm140 mm
Head-tube angle66.5°65.5°65.5°65.5°
Seat-tube angle76.5°75.3°75°74.6°
Chainstay / rear center432 mm432 mm432 mm432 mm
Wheelbase1127 mm1157 mm1179 mm1212 mm
Bottom-bracket drop28 mm21 mm21 mm21 mm
Bottom-bracket height325 mm336 mm336 mm336 mm
Reach405 mm415 mm435 mm455 mm
Stack581 mm592 mm596 mm623 mm
Standover height742 mm752 mm757 mm769 mm
Fork offset / rake46 mm46 mm46 mm46 mm
Front center696 mm726 mm748 mm780 mm
Trail103 mm112 mm112 mm112 mm
Fork length / axle-to-crown522 mm542 mm542 mm542 mm
Seatpost length375 mm438 mm438 mm438 mm
Crank length170 mm170 mm170 mm170 mm
Stem length45 mm45 mm45 mm45 mm
Handlebar width780 mm780 mm780 mm780 mm

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes30T · 11–50T · 12-speed
Lowest0.60:1 Highest2.73:1 Total range455%
Estimated speed At 90 RPM Lowest gear4.5 mph Highest gear20.6 mph

Rear tire: 27.5×2.6.

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.

Try other gearing

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
SRAM NX Eagle, 12-speed Search: SRAM NX Eagle, 12-speed chain
Retailer offers · Affiliate links
Cassette · Original
SRAM NX Eagle, 12-speed, 11-50t Search: SRAM NX Eagle, 12-speed, 11-50t cassette
Front tire · Original
Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6" Replacement search: 27.5x2.6 hookless compatible bicycle tire Before ordering: Check tire approval and pressure for your rim.
More parts (6)
Bottom bracket · Original
SRAM DUB, BSA 73mm, Threaded
Retailer offers · Affiliate links
Crankset · Original
SRAM NX Eagle, DUB, 170mm; chainrings: Steel, 30T
Rear derailleur · Original
SRAM NX Eagle, 12-speed Search: SRAM NX 12-speed mechanical rear derailleur
Shifters · Original
SRAM NX Eagle, trigger, 12-speed Search: SRAM NX 12-speed mechanical shifter
Handlebar · Original
Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm,
Stem · Original
Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise

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
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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.

Archived: 2020 Specialized Stumpjumper Comp Alloy 27.5 · Mountain · Published sizes: S, M, L, XL

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

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

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

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

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.

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