Velopedia Bicycle Archive
2018 Specialized Stumpjumper ST Alloy 27.5 - Women's
Original specifications: geometry for 4 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2018
- Category
- Mountain
- Original MSRP
- $1,870.00
- Sizes
- XS, S, M, L
- Colors
- Gloss Satin/Storm Grey/Black, Satin Gloss /Plum Purple/Acid Lava
- Geometry
- 4 manufacturer sizes
- In this record
- 21 specifications · 2 archived images · original MSRP · geometry
- Archive ID
- 900003892
Original buildAluminum
Frameset
| Frame Construction | 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, 130mm of travel |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Recon RL, Solo Air, 42mm offset, rebound adjust, lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel |
| Rear Shock | X-Fusion 02 Pro RL, Women's Rx Tune, rebound adjust, lockout, 190x45.0mm |
Drivetrain
| Shifters | Shimano SLX, 11-speed |
|---|---|
| Rear Derailleur | Shimano SLX, Shadow Plus, 11-speed |
| Crankset | SRAM NX Power Spline, aluminum, Boost™ 148, XS: 165mm crankarms, SM-LG: 170mm crankarms; chainrings: 32T |
| Bottom Bracket | SRAM Power Spline |
| Cassette | SunRace, 11-speed, 11-46t |
| Chain | KMC X11, 11-speed w/ Missing Link™ |
| Pedals | Specialized Dirt |
Brakes
| Brakes | (F) Tektro Gemini Comp, hydraulic disc, resin pad, 180/200mm rotor / (R) Tektro Gemini Comp, hydraulic disc, resin pad, 180mm rotor |
|---|
Cockpit & Contact Points
| Handlebar | Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp |
|---|---|
| Stem | Specialized, 3D-forged alloy, 4-bolt, 7-degree rise |
| Saddle | Body Geometry Myth Sport, steel rails, 155mm |
| Seatpost | Alloy, two-bolt clamp, 34.9mm |
Wheels & Tires
| Hubs | (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 32h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h |
|---|---|
| Rims | 700C disc, double-wall alloy, pinned |
| Spokes | Stainless, 14g |
| Front Tire | Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3" |
| Rear Tire | Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3" |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 20 measurements
| Measurement | XS | S | M | L |
|---|---|---|---|---|
| Seat tube | 380 mm | 380 mm | 410 mm | 455 mm |
| Effective top tube | 544 mm | 568 mm | 591 mm | 624 mm |
| Head tube | 100 mm | 105 mm | 110 mm | 140 mm |
| Head-tube angle | 66.5° | 66.5° | 66.5° | 66.5° |
| Seat-tube angle | 76.5° | 76.3° | 76° | 75.6° |
| Chainstay / rear center | 432 mm | 432 mm | 432 mm | 432 mm |
| Wheelbase | 1127 mm | 1149 mm | 1170 mm | 1203 mm |
| Bottom-bracket drop | 28 mm | 28 mm | 28 mm | 28 mm |
| Bottom-bracket height | 325 mm | 325 mm | 325 mm | 325 mm |
| Reach | 405 mm | 425 mm | 444 mm | 465 mm |
| Stack | 581 mm | 586 mm | 590 mm | 618 mm |
| Standover height | 742 mm | 744 mm | 749 mm | 761 mm |
| Fork offset / rake | 46 mm | 46 mm | 46 mm | 46 mm |
| Front center | 696 mm | 718 mm | 739 mm | 772 mm |
| Trail | 103 mm | 103 mm | 103 mm | 103 mm |
| Fork length / axle-to-crown | 522 mm | 522 mm | 522 mm | 522 mm |
| Seatpost length | 375 mm | 375 mm | 375 mm | 435 mm |
| Crank length | 165 mm | 170 mm | 170 mm | 170 mm |
| Stem length | 50 mm | 50 mm | 50 mm | 50 mm |
| Handlebar width | 750 mm | 750 mm | 750 mm | 750 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
Speed unavailable: wheel or tire size is missing or unclear.
Gearing not shown: XS.
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

KMC X11SL-TI Gold Chain One Color, 116 Links
Replacement option
More parts (6)Fewer parts
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
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 ST Alloy 27.5 - Women's · Mountain · Published sizes: XS, S, M, L
Frame and fork
Inspect the frame and fork →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, 130mm of travel · Fork: RockShox Recon RL, Solo Air, 42mm offset, rebound adjust, lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel
Suspension
Evaluate the suspension →Archived: Fork: RockShox Recon RL, Solo Air, 42mm offset, rebound adjust, lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel · Rear shock: X-Fusion 02 Pro RL, Women's Rx Tune, rebound adjust, lockout, 190x45.0mm
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano SLX, 11-speed · Rear derailleur: Shimano SLX, Shadow Plus, 11-speed · Crankset: SRAM NX Power Spline, aluminum, Boost™ 148, XS: 165mm crankarms, SM-LG: 170mm crankarms; chainrings: 32T · Bottom bracket: SRAM Power Spline · Cassette: SunRace, 11-speed, 11-46t · Chain: KMC X11, 11-speed w/ Missing Link™
Brakes
Inspect the brakes →Archived: Brakes: (F) Tektro Gemini Comp, hydraulic disc, resin pad, 180/200mm rotor / (R) Tektro Gemini Comp, hydraulic disc, resin pad, 180mm rotor
Wheels and tires
Check wheels and tires →Archived: Rims: 700C disc, double-wall alloy, pinned · Hubs: (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 32h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h · Front tire: Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3" · Rear tire: Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"
Controls and contact points
Archived: Handlebar: Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp · Stem: Specialized, 3D-forged alloy, 4-bolt, 7-degree rise · Seatpost: Alloy, two-bolt clamp, 34.9mm · Saddle: Body Geometry Myth Sport, steel rails, 155mm · Pedals: Specialized Dirt
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.





