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2018 Specialized Stumpjumper Expert 29

Original specifications: geometry for 4 published sizes.

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At a glance

Model year
2018
Category
Mountain
Original MSRP
$5,000.00
Sizes
S, M, L, XL
Colors
Gloss/Storm Grey/Rocket Red, Satin/Rocket Red/Black
Geometry
4 manufacturer sizes
In this record
21 specifications · 2 archived images · original MSRP · geometry
Archive ID
900003383
Campaign
Original buildCarbon Fiber

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/Storm Grey/Rocket RedSatin/Rocket Red/Black

Frameset

Frame ConstructionFACT 11m, full carbon chassis and rear end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 140mm of travel
Frame MaterialCarbon Fiber
ForkRockShox Pike RC, DebonAir, rebound/low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel
Rear ShockRockShox Deluxe RT3, Rx Trail Tune, rebound and 3-position compression adjust, 210x50mm

Drivetrain

ShiftersSRAM GX Eagle, trigger, 12-speed
Rear DerailleurSRAM GX Eagle, 12-speed
CranksetTruvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 24mm spindle; chainrings: 30T
Bottom BracketSRAM GXP
CassetteSRAM GX Eagle, 12-speed, 10-50t
ChainSRAM GX Eagle, 12-speed w/ PowerLock®
PedalsSpecialized Dirt

Brakes

Brakes(F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor

Cockpit & Contact Points

HandlebarSpecialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
StemSpecialized Trail, forged alloy, 4-bolt, 5mm rise, 40mm
SaddleBody Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm
SeatpostCommand Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel

Wheels & Tires

Hubs(F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
RimsRoval Traverse Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built
SpokesDT Swiss Industry
Front TireButcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"
Rear TirePurgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"

Geometry

4 sizes · 20 measurements

Frame measurements by size.

All geometry measurements4 sizes · 20 measurements
MeasurementSMLXL
Seat tube380 mm410 mm455 mm505 mm
Effective top tube572 mm595 mm628 mm662 mm
Head tube95 mm95 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
Wheelbase1149 mm1169 mm1201 mm1232 mm
Bottom-bracket drop33 mm33 mm33 mm33 mm
Bottom-bracket height342 mm342 mm342 mm342 mm
Reach405 mm425 mm445 mm470 mm
Stack614 mm614 mm641 mm656 mm
Standover height747 mm750 mm762 mm775 mm
Fork offset / rake51 mm51 mm51 mm51 mm
Front center714 mm734 mm766 mm797 mm
Trail107 mm107 mm107 mm107 mm
Fork length / axle-to-crown560 mm560 mm560 mm560 mm
Seatpost length369 mm429 mm429 mm429 mm
Crank length170 mm170 mm170 mm170 mm
Stem length40 mm40 mm50 mm50 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 · 10–50T · 12-speed
Lowest0.60:1 Highest3.00:1 Total range500%
Estimated speed At 90 RPM Lowest gear4.8 mph Highest gear23.9 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
SRAM GX Eagle, 12-speed w/ PowerLock® Search: SRAM GX Eagle, 12-speed with PowerLock® chain
Retailer offers · Affiliate links
Cassette · Original
SRAM GX Eagle, 12-speed, 10-50t Search: SRAM GX Eagle, 12-speed, 10-50t cassette
Retailer offers · Affiliate links
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
SRAM GXP
Pedals · Original
Specialized Dirt
Rear derailleur · Original
SRAM GX Eagle, 12-speed Search: SRAM GX Eagle, 12-speed rear derailleur Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Shifters · Original
SRAM GX Eagle, trigger, 12-speed Search: SRAM GX Eagle, trigger, 12-speed shifter Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.
Handlebar · Original
Specialized Trail, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
Stem · Original
Specialized Trail, forged alloy, 4-bolt, 5mm rise, 40mm

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: 2018 Specialized Stumpjumper Expert 29 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: FACT 11m, full carbon chassis and rear end, asymmetrical design, 29 Trail Geometry, SWAT™ Door integration, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 140mm of travel · Fork: RockShox Pike RC, DebonAir, rebound/low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel

Archived: Fork: RockShox Pike RC, DebonAir, rebound/low-speed compression adjust, tapered steerer, 51mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel · Rear shock: RockShox Deluxe RT3, Rx Trail Tune, rebound and 3-position compression adjust, 210x50mm

Archived: Shifters: SRAM GX Eagle, trigger, 12-speed · Rear derailleur: SRAM GX Eagle, 12-speed · Crankset: Truvativ Descendant, aluminum, Boost™ 148, 170mm crankarm, 24mm spindle; chainrings: 30T · Bottom bracket: SRAM GXP · Cassette: SRAM GX Eagle, 12-speed, 10-50t · Chain: SRAM GX Eagle, 12-speed w/ PowerLock®

Archived: Brakes: (F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200mm rotor / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180mm rotor

Archived: Rims: Roval Traverse Carbon 29, hookless carbon, 30mm inner width, 28h, tubeless ready, hand-built · 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, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp · Stem: Specialized Trail, forged alloy, 4-bolt, 5mm rise, 40mm · Seatpost: Command Post IRcc, 16-position micro-height adjustable, two-bolt head, bottom mount cable routing, remote SRL lever, 34.9mm, S: 130mm, M/L/XL: 160mm of travel · Saddle: Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm · Pedals: Specialized Dirt

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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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