Rear tire: 27.5×2.6.
Velopedia Bicycle Archive
2018 Specialized Stumpjumper Comp Carbon 27.5
Original specifications: geometry for 4 published sizes.
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At a glance
- Model year
- 2018
- Category
- Mountain
- Original MSRP
- $3,500.00
- Sizes
- S, M, L, XL
- Colors
- Gloss Carbon/Chameleon, Gloss Gallardo Orange/Carbon/Black
- Geometry
- 4 manufacturer sizes
- In this record
- 21 specifications · 2 archived images · original MSRP · geometry
- Archive ID
- 900003690
Model history 1 other year
Original buildCarbon Fiber
Frameset
| Frame Construction | FACT 9m carbon front chassis w/ Specialized M5 Aluminum rear end, 27.5 Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | RockShox Revelation RC, Solo Air, rebound / low speed compression adjust, tapered steerer, 46mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel |
| Rear Shock | RockShox Monarch RT, Rx Trail Tune, AUTOSAG, rebound and 2-position compression adjust, 197x48mm |
Drivetrain
| Shifters | SRAM GX, trigger, 11-speed |
|---|---|
| Rear Derailleur | SRAM GX, long cage, 11-speed |
| Crankset | Race Face Aeffect, PF30; chainrings: Steel, 30T |
| Bottom Bracket | Race Face PF30 |
| Cassette | SRAM XG 1150, 11-speed, 10-42t |
| Chain | KMC X11, 11-speed w/ Missing Link™ |
| Pedals | Specialized Platform, Cr-Mo, 9/16" spindle |
Brakes
| Brakes | (F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200/180mm rotor / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180/160mm rotor |
|---|
Cockpit & Contact Points
| Handlebar | Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width |
|---|---|
| Stem | Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise |
| Saddle | Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm |
| Seatpost | Command Post IRcc, 12-position micro-height adjustable, alien head design, bottom mount cable routing, remote SRL lever, 30.9mm, S: 100mm, M/L/XL: 125mm of travel |
Wheels & Tires
| Hubs | (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 24h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h |
|---|---|
| Rims | Roval Traverse 27.5, hookless alloy, 29mm internal width, tubeless-ready, 24/28h |
| Spokes | DT Swiss Industry, stainless, 3-cross, 2.0" |
| Front Tire | Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6" |
| Rear Tire | Butcher, GRID 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 · 19 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 396 mm | 430 mm | 468 mm | 523 mm |
| Effective top tube | 558 mm | 587 mm | 618 mm | 646 mm |
| Head tube | 105 mm | 115 mm | 125 mm | 95 mm |
| Head-tube angle | 67° | 67° | 67° | 67° |
| Seat-tube angle | 74° | 74° | 74° | 74° |
| Chainstay / rear center | 420 mm | 420 mm | 420 mm | 420 mm |
| Wheelbase | 1096 mm | 1126 mm | 1158 mm | 1184 mm |
| Bottom-bracket drop | 18 mm | 18 mm | 18 mm | 18 mm |
| Reach | 388 mm | 414 mm | 442 mm | 464 mm |
| Stack | 590 mm | 599 mm | 608 mm | 617 mm |
| Standover height | 742 mm | 748 mm | 762 mm | 764 mm |
| Fork offset / rake | 46 mm | 46 mm | 46 mm | 46 mm |
| Front center | 677 mm | 706 mm | 738 mm | 764 mm |
| Trail | 104 mm | 104 mm | 104 mm | 104 mm |
| Fork length / axle-to-crown | 542 mm | 542 mm | 542 mm | 542 mm |
| Seatpost length | 390 mm | 430 mm | 430 mm | 430 mm |
| Crank length | 170 mm | 170 mm | 170 mm | 170 mm |
| Stem length | 45 mm | 60 mm | 60 mm | 60 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 GX XG-1150 11-Speed Cassette Black, 10-42T
10-42T
More parts (6)

SRAM GX 1x11 Rear Derailleur Black, Long Cage
Long Cage
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: 2018 Specialized Stumpjumper Comp Carbon 27.5 · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: FACT 9m carbon front chassis w/ Specialized M5 Aluminum rear end, 27.5 Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel · Fork: RockShox Revelation RC, Solo Air, rebound / low speed compression adjust, tapered steerer, 46mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel
Suspension
Evaluate the suspension →Archived: Fork: RockShox Revelation RC, Solo Air, rebound / low speed compression adjust, tapered steerer, 46mm offset, 15mm Maxle® Stealth thru-axle, 15x110mm Boost™, 150mm of travel · Rear shock: RockShox Monarch RT, Rx Trail Tune, AUTOSAG, rebound and 2-position compression adjust, 197x48mm
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM GX, trigger, 11-speed · Rear derailleur: SRAM GX, long cage, 11-speed · Crankset: Race Face Aeffect, PF30; chainrings: Steel, 30T · Bottom bracket: Race Face PF30 · Cassette: SRAM XG 1150, 11-speed, 10-42t · Chain: KMC X11, 11-speed w/ Missing Link™
Brakes
Inspect the brakes →Archived: Brakes: (F) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200/180mm rotor / (R) SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180/160mm rotor
Wheels and tires
Check wheels and tires →Archived: Rims: Roval Traverse 27.5, hookless alloy, 29mm internal width, tubeless-ready, 24/28h · Hubs: (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 24h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h · Front tire: Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6" · Rear tire: Butcher, GRID casing, Gripton compound, 2Bliss Ready, 27.5 x 2.6"
Controls and contact points
Archived: Handlebar: Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width · Stem: Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise · Seatpost: Command Post IRcc, 12-position micro-height adjustable, alien head design, bottom mount cable routing, remote SRL lever, 30.9mm, S: 100mm, M/L/XL: 125mm of travel · Saddle: Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm · Pedals: Specialized Platform, Cr-Mo, 9/16" spindle
Before and during the test ride
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Gallery2 images
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





