2018 Specialized Stumpjumper ST Alloy 27.5

2018 Specialized Stumpjumper ST Alloy 27.5
Summary
MSRPUS$ 1,850
Wheel Size27.5″
FrameAluminum
SuspensionFull
Front Travel130mm
Rear Travel130mm
Gearing1 × 11
Drivetrain
Shimano SLX
Brand
Specialized
Description

Specialized’s 2018 Stumpjumper ST Alloy 27.5 is a mid-range component level aluminum frame crosscountry bike.

Build
FrameAluminum
ForkRockShox Recon RL, Solo Air, 42mm offset, rebound adjust, lockout, Boost Maxle Lite thru-axle
Rear ShockX-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190mm x 42.5mm
Bottom Bracket325mm 325mm 325mm 325mm
StemSpecialized Trail, 3D forged alloy, 4-bolt, 6° rise
HandlebarSpecialized, 6061 alloy, 780mm width, 8° backsweep, 6° upsweep, 27mm rise
SaddleBody Geometry Henge Sport, steel rails, 143mm width
SeatpostAlloy
PedalsSpecialized Dirt
GripsSpecialized Sip, half-waffle, S/M: regular thickness, L/XL: XL thickness
Components
Front Derailleur
Rear DerailleurShimano SLX, Shadow Plus, GS cage
ShiftersShimano SLX, 11-speed
CrankSRAM NX, Boost, direct-mount X-Sync
CassetteSunrace, ED black, 11-speed, 11-46 tooth
ChainKMC X11 with Missing Link
Chain Guide
BrakesTektro Gemini Comp with 200mm front/180mm rear rotors
Brake LeversTektro Gemini Comp
Wheels
RimsDouble-wall, 27mm internal width, 32 hole
SpokesStainless, 14g
Front HubSpecialized, sealed cartridge bearings, boost front and rear
Rear HubSpecialized, sealed cartridge bearings, boost front and rear
TiresFront: Butcher 2.3", GRID casing, GRIPTON compound, 2Bliss Ready Rear: Purgatory 2.3", GRID casing, GRIPTON compound, 2Bliss Ready
Gearing
1 × 1111 speed
2018 Specialized Stumpjumper ST Alloy 27.5
Category Average Virtual Bike

The 2018 Stumpjumper ST Alloy 27.5 is easier to ride up hills than similar bikes.

The 2018 Stumpjumper ST Alloy 27.5 won‘t keep up with similar bikes while riding downhill or sprinting.

Geometry

Oh snap! This frame was drawn from the actual bike geometry measurements. Roll over the table below to highlight frame dimensions.

Size
Stack586590618631
Reach425444465490
Top Tube Length568591624657
Seat Tube Angle76.376.075.675.2
Seat Tube Length380410455505
Head Tube Angle66.566.566.566.5
Head Tube Length105110140155
Chainstay Length432432432432
BB Height325325325325
Wheelbase1,1491,1701,2031,234
Standover Height744749761762
BB Drop30303030
🐐 Measurements listed in millimeters and degrees
Replacement Parts
Summary
MSRPUS$ 1,850
Wheel Size27.5″
FrameAluminum
SuspensionFull
Front Travel130mm
Rear Travel130mm
Gearing1 × 11
Drivetrain
Shimano SLX
Brand
Specialized
Gearing
1 × 1111 speed
2018 Specialized Stumpjumper ST Alloy 27.5
Category Average Virtual Bike

The 2018 Stumpjumper ST Alloy 27.5 is easier to ride up hills than similar bikes.

The 2018 Stumpjumper ST Alloy 27.5 won‘t keep up with similar bikes while riding downhill or sprinting.

Replacement Parts
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