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2018 Specialized Stumpjumper Comp Alloy 29

Original specifications: geometry for 4 published sizes.

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At a glance

Model year
2018
Category
Mountain
Original MSRP
$3,020.00
Sizes
S, M, L, XL
Colors
Gloss Satin/Acid Mint/Black, Satin/Black/Flo Red
Geometry
4 manufacturer sizes
In this record
22 specifications · archived image · original MSRP · geometry
Archive ID
900003890
Model history 1 other year
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 Satin/Acid Mint/BlackSatin/Black/Flo Red

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
ForkFOX FLOAT Rhythm 34, GRIP Damper, 51mm 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, 210x50mm

Drivetrain

ShiftersShimano SLX, 11-speed
Rear DerailleurShimano XT, Shadow Plus, GS cage, 11-speed
CranksetRaceFace Aeffect, 24mm spindle, 170mm crankarm; chainrings: Steel, 30T
Bottom BracketRace Face PF30
CassetteShimano SLX, 11-speed, 11-46t
ChainKMC X11, 11-speed w/ Missing Link™
PedalsSpecialized Body Geometry Fitness, platform, plastic

Brakes

Brakes(F) Shimano SLX, hydraulic disc, resin pads, 200mm / (R) Shimano SLX, hydraulic disc, resin pads, 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 Phenom Comp, Adaptive Edge design, 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/XL: 150mm of travel

Wheels & Tires

Hubs(F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
RimsRoval Traverse 29, hookless alloy, 29mm inner width, tubeless ready
SpokesDT Swiss Industry, stainless, 3-cross, 2.0"
Front TireButcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"
Rear TirePurgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"

Geometry

4 sizes · 18 measurements

Frame measurements by size.

All geometry measurements4 sizes · 18 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
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 · 11–46T · 11-speed
Lowest0.65:1 Highest2.73:1 Total range418%
Estimated speed At 90 RPM Lowest gear5.2 mph Highest gear21.7 mph

Rear tire: 29×2.6.

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
KMC X11, 11-speed w/ Missing Link™
Cassette · Original
Shimano SLX, 11-speed, 11-46t Search: Shimano SLX, 11-speed, 11-46t cassette
Front tire · Original
Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" Replacement search: 29x2.6 hookless compatible bicycle tire Before ordering: Check tire approval and pressure for your rim.
More parts (6)
Bottom bracket · Original
Race Face PF30
Pedals · Original
Specialized Body Geometry Fitness, platform, plastic
Crankset · Original
RaceFace Aeffect, 24mm spindle, 170mm crankarm; chainrings: Steel, 30T
Rear derailleur · Original
Shimano XT, Shadow Plus, GS cage, 11-speed Search: Shimano XT, Shadow Plus, GS cage, 11-speed rear derailleur Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shifters · Original
Shimano SLX, 11-speed Search: Shimano SLX, 11-speed shifter
Handlebar · Original
Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, S 720mm, M-XL 750mm

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.

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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: 2018 Specialized Stumpjumper Comp Alloy 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: FOX FLOAT Rhythm 34, GRIP Damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel · Aluminum

Archived: Fork: FOX FLOAT Rhythm 34, GRIP Damper, 51mm 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, 210x50mm

Archived: Shifters: Shimano SLX, 11-speed · Rear derailleur: Shimano XT, Shadow Plus, GS cage, 11-speed · Crankset: RaceFace Aeffect, 24mm spindle, 170mm crankarm; chainrings: Steel, 30T · Bottom bracket: Race Face PF30 · Cassette: Shimano SLX, 11-speed, 11-46t · Chain: KMC X11, 11-speed w/ Missing Link™

Archived: Brakes: (F) Shimano SLX, hydraulic disc, resin pads, 200mm / (R) Shimano SLX, hydraulic disc, resin pads, 180mm

Archived: Rims: Roval Traverse 29, hookless alloy, 29mm inner width, tubeless ready · Hubs: (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h · Front tire: Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" · Rear tire: Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"

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/XL: 150mm of travel · Saddle: Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm · Pedals: Specialized Body Geometry Fitness, platform, plastic

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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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