Rear tire: 29×2.6.
Velopedia Bicycle Archive
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
Original buildAluminum
Frameset
| Frame Construction | 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 |
|---|---|
| Frame Material | Aluminum |
| Fork | FOX FLOAT Rhythm 34, GRIP Damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel |
| Fork Material | Aluminum |
| Rear Shock | FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x50mm |
Drivetrain
| 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™ |
| Pedals | Specialized 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
| 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 |
| Saddle | Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm |
| 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 |
Wheels & Tires
| Hubs | (F) Specialized, sealed cartridge bearings, 15x110mm spacing, 28h / (R) Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h |
|---|---|
| Rims | Roval Traverse 29, hookless alloy, 29mm inner width, tubeless ready |
| Spokes | DT Swiss Industry, stainless, 3-cross, 2.0" |
| Front Tire | Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6" |
| Rear Tire | Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6" |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 18 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 380 mm | 410 mm | 455 mm | 505 mm |
| Effective top tube | 573 mm | 597 mm | 628 mm | 662 mm |
| Head tube | 100 mm | 100 mm | 125 mm | 140 mm |
| Head-tube angle | 66.5° | 66.5° | 66.5° | 66.5° |
| Seat-tube angle | 74.8° | 74.5° | 74.1° | 73.7° |
| Chainstay / rear center | 437 mm | 437 mm | 437 mm | 437 mm |
| Wheelbase | 1151 mm | 1171 mm | 1201 mm | 1232 mm |
| Bottom-bracket drop | 33 mm | 33 mm | 33 mm | 33 mm |
| Bottom-bracket height | 341 mm | 341 mm | 341 mm | 341 mm |
| Reach | 405 mm | 425 mm | 445 mm | 470 mm |
| Stack | 619 mm | 619 mm | 642 mm | 656 mm |
| Standover height | 756 mm | 762 mm | 775 mm | 776 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 716 mm | 736 mm | 766 mm | 797 mm |
| Trail | 107 mm | 107 mm | 107 mm | 107 mm |
| Fork length / axle-to-crown | 560 mm | 560 mm | 560 mm | 560 mm |
| Stem length | 45 mm | 45 mm | 45 mm | 45 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
More parts (6)
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.
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 Alloy 29 · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →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
Suspension
Evaluate the suspension →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
Drivetrain
Check drivetrain wear →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™
Brakes
Inspect the brakes →Archived: Brakes: (F) Shimano SLX, hydraulic disc, resin pads, 200mm / (R) Shimano SLX, hydraulic disc, resin pads, 180mm
Wheels and tires
Check wheels and tires →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
Before and during the test ride
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





