Stumpjumper

mtb

Origin

In 1981, Specialized founder Mike Sinyard introduced the Stumpjumper — the world's first mass-produced mountain bike. Before this, mountain bikes were custom-built one-offs (like the Marin County 'klunkers'). The Stumpjumper democratized mountain biking by making it available to anyone for $750. It established Specialized as a pioneering bicycle company and created an entirely new category of cycling. high

Specifications

Frame: FACT 11m carbon (asymmetric, SWAT door, flip-chip, threaded BB, 12x148 Boost, sealed cartridge pivots); alloy option on Stumpjumper 15 (2025+)
Weight: kg
Drivetrain: SRAM GX Eagle 1×12 (Comp); GX Eagle T-Type Transmission (Expert); SRAM XX Eagle AXS Transmission wireless (S-Works)
Brakes: SRAM G2 RS 4-piston 200/180 mm (Comp); SRAM Code Silver Stealth (Expert); SRAM Code RSC (S-Works)
Wheels: 29" all sizes; Roval Control alloy (Comp), Roval Control Carbon (Expert+)
Lineup: Mid-to-premium trail full-suspension — Specialized's core trail MTB platform

Signature technologies

First mass-produced mountain bike in history (1981)
SWAT Door integration
Flip chip geometry adjustment
Genie shock technology (2025+)
45 years of continuous production

The verdict

+Strengths

Best-in-class trail capability — versatile enough for XC efficiency and technical descents
Exceptional frame quality — FACT carbon is light, stiff, and well-built
SWAT door storage — practical innovation, appreciated by reviewers
Flip chip geometry adjustment adds versatility
Genie shock tune (2025+) praised for progressive feel and bottom-out resistance
Alloy option (2025) praised for broadening accessibility without sacrificing ride quality

−Weaknesses

High price — Comp starts at ~$5,000, S-Works at $13,500
Dropper post too short on some sizes (ENDURO Magazine noted this on S-Works)
2026 EVO-only lineup limits choice — riders who preferred standard geometry have no option
Specialized proprietary components (SWAT, saddle) can limit aftermarket options

Did you know

01The 1981 Stumpjumper was the world's first mass-produced mountain bike — it literally invented the MTB category as a consumer product
02Estonian pro cyclist Tanel Kangert rode a Specialized Stumpjumper Expert HT 29 for his off-road events, announced via the Specialized Concept Store in Estonia (2011)
03The S-Works Stumpjumper HT 29er weighed just 8.63kg stock (19" frame) in 2011 — weighed at the Specialized Concept Store in Rocca al Mare, Tallinn
04In 2012, Specialized held a 'Test the Best' demo event at Pirita (Tallinn) where Estonian riders could test the Stumpjumper FSR Expert Carbon 29 — one rider described it as his 'biggest positive surprise'
05The 25th anniversary (2006) team bikes were painted pink to match the original 1981 Stumpjumper — Specialized's Kevin Franks confirmed 'The very first Stumpjumper was pink'
06For 2026, Specialized 'killed' the standard Stumpjumper 15, making the entire lineup exclusively EVO — the most aggressive trim ever becomes the only option
07The Specialized Stumpjumper S-Works Carbon FSR won CyclingNews readers' 'Best Product 2005' at position #15 globally

Who it’s for

140mm travel, progressive geometry, versatile suspension platformExperienced MTB enthusiast upgrading from hardtail Industry benchmark trail bike, forgiving yet capableEVO variant with 150mm travel and slacker geometry handles aggressive terrainXC racer wanting more comfort on technical courses Efficient pedaling platform with Brain shock heritage, light carbon framesWorld's first mass-produced MTB — iconic status since 1981

Buyer’s notes

№ 01

2025 'Stumpjumper 15' introduced the first-ever alloy Comp option at ~$4,500 — the most affordable way to get a new full-suspension Stumpjumper

№ 02

In 2026 Specialized kills the standard Stumpjumper — only EVO remains. If you prefer mellower geometry, look for 2024-2025 standard models on sale

№ 03

Used Stumpjumper market is massive — 40+ years of production means many generations available. Focus on 2019+ (Gen 6) for modern geometry and standards

№ 04

Check the SWAT door/storage compartment — it's a signature Stumpjumper feature. On used bikes, verify the door seal is intact and the compartment is dry

№ 05

EVO vs Standard: EVO has slacker head angle (~63.5° vs 65°), more travel (150mm vs 140mm rear), and adjustable geometry via headset cups. Choose based on your terrain and riding style

№ 06

On velo.clubbers.ee, Stumpjumper has 56 results — check for local used deals, Estonian owner experiences, and comparisons with Canyon Spectral which is frequently discussed as an alternative

Generations

1981–~1995
Origin (1981–1990s)
- World's first mass-produced MTB. 26" wheels, rigid fork. Suspension forks added. $750 original price.
Frame
Chromoly steel, then aluminum (M4)
~1996–~2010
FSR era (1996–~2010)
- FSR (Future Shock Rear) full-suspension platform. Carbon frames on S-Works. Disc brakes. 26" standard. HT and FSR variants coexist.
Frame
M5 aluminum, then FACT carbon
2011–2019
29er era (2011–2019)
- 29" wheels become standard. EVO variant introduced. S-Works HT weighed 8.63kg. Trail geometry evolves. Flip chip introduced.
Frame
FACT carbon (various grades), aluminum
2020–2024
Modern platform (2020–2024)
- SWAT door storage. Asymmetrical frame. 140mm front / 130mm rear. Fully internal routing. Boost 148mm. EVO and standard variants.
Frame
FACT 11m carbon, asymmetrical
2025–2026
Stumpjumper 15 (2025–2026)
- Complete redesign. Genie shock technology. First alloy option in years ($4,500). 2026: standard KILLED, EVO-only lineup. Expert $6,200, S-Works $11,300.
Frame
FACT carbon + alloy option