Stumpjumper 15 EVO Now Comes With a RockShox GENIE Shock
Specialized updated the Stumpjumper lineup this week without any announcement. The S-Works EVO, EVO Pro, EVO Elite, and EVO Elite Alloy now ship with RockShox GENIE shocks and Lyrik forks.
That matters because GENIE launched in 2024 as a Specialized and Fox collaboration, and most people assumed Fox had it exclusively. Specialized owns the patent. They've now built it with RockShox too.
The new unit is a RockShox Super Deluxe Ultimate GENIE with the RC2T damper. Same dual-chamber air spring, same 70% crossover point. It lands alongside RockShox's fully redesigned 2027 Super Deluxe platform — new air can, new damper internals, new reservoir.
Fox GENIE builds are still available. You get to choose.
New colorways
- S-Works — metallic white/silver, or a gloss charcoal tint that shows the carbon layup
- S-Works frameset — sandstone
- EVO Pro — satin silver, or a gloss brown called Stallion
- Alloy — Satin East Sierras, a dusty brown
Six geometry settings, one frame
| Adjustment | Range |
|---|---|
| Eccentric headset cup | 63°, 64.5°, or 65.5° head angle |
| Horst link flip chip | ±7mm bottom bracket height |
| Aftermarket rocker link | Full 29" or mullet, geometry unchanged |
At 65.5° with the BB high, it's a quick trail bike with good clearance for rocky terrain. At 63° with the BB low, it's a park bike.
The flip chip swaps trailside. The headset cup is a bench job, and we do those in-house at both shops.
Travel is 145mm rear with a 160mm fork across the EVO line. Six sizes, S1 through S6, sized by riding style rather than inseam.
How GENIE works
A second air sleeve wraps around the shock body. That outer chamber creates a large air volume for the first 70% of travel, flattening the spring curve to something close to a coil. Past 70%, a slide bushing seals the outer chamber off. Volume drops and the shock ramps up hard.
Coil feel for traction. Air progression for bottom-out support.
Specialized's testing numbers:
- 57% better traction than a standard air shock
- 39% fewer bottom-outs
- 16.3% better bump force management — the 145mm Stumpjumper and the 170mm Enduro both use 101mm of travel to absorb the same 1080N hit
Singletracks reported the rear wheel stays connected to the ground more than anything else they'd ridden. Mountain Bike Action described it as Enduro stability blended with Epic 8 EVO playfulness. OutdoorGearLab called out the climbing platform as unusually stable for the travel.
Setup: 30% sag, about 16mm. Three compression presets, 14 clicks of low-speed rebound.
Details that matter long-term
- SWAT 4.0 storage — tube, tool, jacket, and snacks in the downtube. Ride the Crest without a pack.
- Lifetime pivot bearings — Specialized replaces them for the original owner, no questions asked, one set per year.
- Standard everything — threaded BB, SRAM UDH, T-Type compatible, sealed cartridge pivots. GENIE uses standard Float internals, so service parts are easy to source.
- About 30 lb for the carbon builds.
Why this bike, here
The 140–150mm category is crowded. Hightower, SB140, Ripmo, Fuel EX are all good.
The Stumpjumper wins on range. You're pedaling Coyote Canyon on Tuesday and shuttling something rowdier on Saturday, and it handles both without a compromise you'll notice.
Come ride one
We keep demos at both shops. Stop by Midway or Heber, or call and we'll set one up in your size with the geometry dialed to how you ride.
Shop the Specialized Stumpjumper 15 →
Sources: BikeMag, Singletracks, Blister Review, OutdoorGearLab, Mountain Bike Action, Bikerumor, Flow Mountain Bike, Specialized.com.
0 comments