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2021 S4 SKU: BMT21324

Specialized S-Works Stumpjumper Mountain Bike - 2021, S4

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TPC Guarantee

Every bike receives our white glove, Certified Pre-Owned treatment, including a full pro-tune by our Master Mechanics in Louisville, CO. All CPO bikes are pristine and rolling beautifully before we pack and ship to your door.

- New Specialized Eliminator Black Diamond 2Bliss Ready extremely durable front tire for performance training in all conditions.
- Shimano XT M8100 12 speed groupset.
- HUNT Trailwide 29 Disc Carbon Tubeless Compatible wheelset.
- PNW Roam dropper post w/ 170mm of travel.
- Helm MKII front fork w/ 130mm of travel.
- Clear protective tape is installed on frame.

Master Mechanic's Notes
- Light scratches on seatpost.

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141-Point Inspection

This bike passed our 141-point inspection to qualify to be a Certified Pre-Owned bike. It's free of structural damage and is in excellent cosmetic shape.

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30-Day Hassle-Free Returns

Shop with confidence. Every bike is covered by our 30-day satisfaction guarantee. If this bike isn’t perfect for you, get in touch and we’ll help you find the right bike.

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RideFast Shipping

Assemble your bike in 15 minutes or less! Our bikes ship in our RideFast box for speed and safety. All tools you need to assemble are included.

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Year 2021
Brand Specialized
Model S-Works Stumpjumper
Size S4
Frame Material Carbon Fiber
Drivetrain Shimano, 1x12 spd
Weight 29 lbs 11 oz
Fork Cane Creek Helm MKII
Fork Travel 130mm
Rear Shock Fox Series FLOAT Metric DPS
Rear Shock Travel 130mm
Brakes Shimano XT M8100, Disc Brakes - Hydraulic
Shifters Shimano XT M8100, Mechanical
Rear Derailleur Shimano XT M8100
Bottom Bracket Shell Press fit
Crankset Shimano XT M8100, 32t, 170mm
Cassette Shimano XT M8100, 10-51t
Chain Shimano
Handlebar PNW Range Alloy, 790mm
Headset Specialized
Stem PNW Range Alloy, 35.0mm x 40mm, 0°
Seatpost PNW Roam Dropper, 30.9mm
Seatpost Travel 170mm
Saddle WTB Speed V
Front Axle Spacing 15x110mm (Thru-Axle)
Rear Axle Spacing 12x148mm Boost
Wheelset HUNT Trailwide 29 Disc Carbon Tubeless Compatible , HUNT
Front Tire Specialized Eliminator Black Diamond 2Bliss Ready, 29" x 2.3"
Rear Tire Schwalbe Hans Dampf, 29" x 2.35"
Tire Type Tubeless
Tubeless Compatibility Wheels are tubeless compatible


Recommended Rider Height 5'8" - 6'2"
a. Effective Top Tube 632 mm
b. Seat Tube 425 mm
c. Seat Tube Angle 76.5, 76 (High BB, Low BB)
d. Head Tube Angle 65.5, 65 (High BB, Low BB)
e. Head Tube 120 mm
f. Stack 627mm, 632mm (High BB, Low BB)
g. Reach 480mm, 475mm (High BB, Low BB)
h. Standover Height 749 mm
i. Saddle Height Range 650 - 760 mm

“I love this company! My beautiful bike arrived promptly, was packed brilliantly, and tuned perfectly. It was exactly as described.”

— Kari K.


“In the past month, I purchased a road bike and MTB from TPC. Very happy with the price and condition of both bikes! I was riding the bikes 10 minutes after I received them.”

— David H.

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