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Specialized Stumpjumper 15 Alloy Frameset (Satin Obsidian) (29/27.5") (S1)

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Specialized Stumpjumper 15 Alloy Frameset Description:

No more trade-offs, no more compromising, the Stumpjumper 15 Alloy is here and ready to "Rule All Trails". Short travel efficiency and control mixed with long travel downhill squish, from big hits to chunky descents, long climbs to smooth lines, the playful and predictable ride quality can not be matched. Ride Dynamics tuned suspension and the highly adjustable geometry delivers confidence to drop into challenging terrain once thought unrideable. Uncertain of where the trail ahead leads, rest assured the Stumpjumper 15 knows the way, and it will be good.


Features:

  • M5 alloy frame mimics higher-end carbon version in design at a fraction of the cost
  • Fox Float Performance Genie shock designed for all trail conditions
  • SWAT internal downtube makes a creative storage solution for riding essentials
  • Progressive S sizing improves handling and performance regardless of frame or rider size
  • S1 and S2 are 27.5" rear wheel compatible only. S3-S6 are compatible with 27.5 and 29" rear wheel

Specifications:

  • Frame: M5 Alloy Chassis and Rear-End (Trail Geometry) (SWAT Door Integration) (Head Tube Angle Adjustment) (Internal Cable Routing) (Threaded BB) (UDH Derailleur Hanger) (12 x 148mm Rear Spacing) (145mm Travel)
  • Rear Shock: FOX FLOAT Performance with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/LSR adjustment, S1:210x52.5mm, S2-S6:210x55mm
  • Headset: Tapered (1-1/8" Upper, 1.5" Lower)
  • Bottom Bracket: BSA Threaded, 73mm (Sold Separately)
  • Model Year: 2025
  • Color: Satin Obsidian / Silver Dust
  • Weight: 9lb, 9.0oz (Size S4)

This product was added to our catalog on April 24, 2025

Sizing Recommendations for Riders Who Fall Between Sizes:

  • Sizing down will provide a more maneuverable ride while sizing up will provide more stability
Rider Height (Feet)Rider Height (CM)
S14'11" - 5'3"150 - 160cm
S25'2" - 5'8"157 - 173cm
S35'5" - 5'11"165 - 180cm
S45'8" - 6'2"173 - 188cm
S55'10" - 6'4"178 - 193cm
S66'2" - 6'8"188 - 203cm

Note: All sizing recommendations are provided by the manufacturer and may differ for each rider.

SizeS1S2S3S4S5S6
Crank Length165mm165mm165mm170mm170mm170mm
Handlebar Width780mm780mm800mm800mm800mm800mm
Stem Length40mm40mm40mm40mm40mm40mm
Saddle Width155mm155mm143mm143mm143mm143mm
Max Seatpost Insertion245mm245mm255mm255mm285mm285mm
Min Seatpost Insertion80mm80mm80mm80mm80mm80mm
Bottom Bracket Drop41mm38mm38mm38mm38mm38mm
Bottom Bracket Height334mm337mm337mm337mm337mm337mm
Bike Standover Height738mm751mm745mm745mm745mm751mm
Chainstay Length430mm432mm435mm435mm445mm445mm
Fork Length (full)551mm561mm561mm561mm561mm561mm
Front Center720mm751mm780mm812mm843mm879mm
Headtube Angle64.5°64.5°64.5°64.5°64.5°64.5°
Headtube Length95mm100mm110mm125mm140mm155mm
Reach400mm425mm450mm475mm500mm530mm
Seat Tube Angle77°76.5°77.2°76.9°77.3°77.6°
Seat Tube Length385mm385mm405mm425mm445mm465mm
Stack608mm618mm627mm640mm654mm667mm
Top-tube Length (Horizontal)541mm573mm595mm624mm647mm677mm
Trail129mm130mm130mm130mm130mm130mm
Wheelbase1149mm1181mm1213mm1244mm1285mm1322mm

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.

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