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2020 Specialized Stumpjumper 29

Original specifications: geometry for 4 published sizes.

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At a glance

Model year
2020
Category
Mountain
Original MSRP
$2,720.00
Sizes
S, M, L, XL
Colors
Gloss Black / Dove Grey, Satin Aqua / Rocket Red / Black
Geometry
4 manufacturer sizes
In this record
21 specifications · 6 archived images · original MSRP · geometry
Archive ID
900003531
Campaign
Original buildAluminum

Manufacturer catalog

Published sizes and colors

4 sizes · 2 colors

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

Published sizes

SMLXL

Published colors

Gloss Black / Dove GreySatin Aqua / Rocket Red / Black

Frameset

Frame ConstructionM5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 140mm of travel
Frame MaterialAluminum
ForkRockShox 35 Gold RL, DebonAir, Motion Control damper with low-speed compression to lockout, 51mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 150mm of travel
Rear ShockRockShox Deluxe Select, Rx Trail Tune, rebound adjust, 210x50mm

Drivetrain

ShiftersSRAM SX Eagle, trigger, 12-speed
Rear DerailleurSRAM SX Eagle, 12-speed
CranksetSRAM SX Eagle, Powerspline, 170mm; chainrings: Steel, 30T
Bottom BracketSRAM Powerspline
CassetteSRAM PG-1210 Eagle, 11-50t
ChainSRAM SX Eagle, 12-speed
PedalsTest Ride Pedals Provided by Specialized

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, S 720mm, M-XL 750mm
StemSpecialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise
SaddleBody Geometry Myth 155 S, Body Geometry Henge 143 M/L/XL, steel rails
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 thru-axle, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
Rims700C disc, double-wall alloy, pinned, 32h
SpokesStainless, 14g
Front TireButcher, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"
Rear TireEliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

Geometry

4 sizes · 20 measurements

Frame measurements by size.

All geometry measurements4 sizes · 20 measurements
MeasurementSMLXL
Seat tube380 mm410 mm455 mm505 mm
Effective top tube573 mm597 mm628 mm662 mm
Head tube100 mm100 mm125 mm140 mm
Head-tube angle66.5°66.5°66.5°66.5°
Seat-tube angle74.8°74.5°74.1°73.7°
Chainstay / rear center437 mm437 mm437 mm437 mm
Wheelbase1151 mm1171 mm1201 mm1232 mm
Bottom-bracket drop33 mm33 mm33 mm33 mm
Bottom-bracket height341 mm341 mm341 mm341 mm
Reach405 mm425 mm445 mm470 mm
Stack619 mm619 mm642 mm656 mm
Standover height756 mm762 mm775 mm776 mm
Fork offset / rake51 mm51 mm51 mm51 mm
Front center716 mm736 mm766 mm797 mm
Trail107 mm107 mm107 mm107 mm
Fork length / axle-to-crown560 mm560 mm560 mm560 mm
Seatpost length375 mm438 mm438 mm478 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 gear4.7 mph Highest gear21.2 mph

Rear tire: 29×2.3.

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 SX Eagle, 12-speed
Retailer offers
Cassette · Original
SRAM PG-1210 Eagle, 11-50t
Front tire · Original
Butcher, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" Replacement search: 29x2.6 bicycle tire Before ordering: Check rim type and tire clearance.
More parts (6)Fewer parts
Rear tire · Original
Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3" Replacement search: 29x2.3 bicycle tire Before ordering: Check rim type and tire clearance.
Bottom bracket · Original
SRAM Powerspline
Pedals · Original
TEST RIDE PEDALS PROVIDED BY SPECIALIZED
Crankset · Original
SRAM SX Eagle, Powerspline, 170mm; chainrings: Steel, 30T
Rear derailleur · Original
SRAM SX Eagle, 12-speed
Retailer offers
Shifters · Original
SRAM SX Eagle, trigger, 12-speed

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Bike-specific inspection checklist 22 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 29 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 140mm of travel · Fork: RockShox 35 Gold RL, DebonAir, Motion Control damper with low-speed compression to lockout, 51mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 150mm of travel

Archived: Fork: RockShox 35 Gold RL, DebonAir, Motion Control damper with low-speed compression to lockout, 51mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 150mm of travel · Rear shock: RockShox Deluxe Select, Rx Trail Tune, rebound adjust, 210x50mm

Archived: Shifters: SRAM SX Eagle, trigger, 12-speed · Rear derailleur: SRAM SX Eagle, 12-speed · Crankset: SRAM SX Eagle, Powerspline, 170mm; chainrings: Steel, 30T · Bottom bracket: SRAM Powerspline · Cassette: SRAM PG-1210 Eagle, 11-50t · Chain: SRAM SX 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: 700C disc, double-wall alloy, pinned, 32h · Hubs: (F) Specialized, sealed cartridge bearings, 15x110mm thru-axle, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h · Front tire: Butcher, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" · Rear tire: Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

Controls and contact points

Archived: Handlebar: Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, S 720mm, M-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 Myth 155 S, Body Geometry Henge 143 M/L/XL, steel rails · Pedals: TEST RIDE PEDALS PROVIDED BY SPECIALIZED

Before and during the test ride

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Gallery6 images

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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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