Both climb well — they answer the question differently.

The Ripmo V3 is the more energetic climber. The DW-Link platform pedals firmly without a lockout, and reviewers across the board describe a 'pep in its step' under power. With a 76.5° seat angle on size MD it puts you in a comfortable, centered position for long fire-road grinds.

The Stumpjumper 15 uses GENIE's supple initial stroke to maximize traction on technical climbs — it's the better choice when you're picking through rooted, rocky climbs and need the rear wheel to stay glued. Its 77° seat angle (size S3) is a touch steeper. A few reviewers note it can feel 'wallowy' on smooth climbs if you're not smooth with pedal strokes; the two-position climb switch on the GENIE handles that.

Depends what 'better' means. The Stumpjumper is more composed — the GENIE shock's plush first 70% of travel and hard end-stroke ramp let it absorb chatter and big hits without using all its travel. Reviewers consistently call it 'planted' and 'on rails.'

The Ripmo is more engaging — a slightly shorter rear end, lively suspension, and 160 mm fork (10 mm more than the Stumpy) make it eager to pop, manual, and change lines. A few reviewers (Pinkbike, NSMB) flag a slightly nervous feel at the very top of the speed range in true enduro terrain — the trade-off for that liveliness.

Different enough that side-by-side test rides feel like two different bikes.

The Ripmo V3 runs Ibis's signature DW-Link with a Fox Float X (or Float X Factory on higher builds). It's supportive in the mid-stroke, poppy off lips, and gives back energy when you pump. Reviewers describe it as 'lively' and 'snappy.'

The Stumpjumper 15 uses a Specialized-developed Fox GENIE shock — a dual-chamber air spring whose outer chamber closes off after ~70% travel, creating a hard ramp at the end-stroke. The result is coil-like plushness that suddenly becomes very progressive. It's a fundamentally different ride character: ground-hugging instead of poppy.

Not much in isolation. Rear travel: 150 mm Ripmo, 145 mm Stumpjumper — within the noise of how each shock is tuned.

Front travel: 160 mm Ripmo (Fox 36), 150 mm Stumpjumper carbon (Fox 36 on S2–S6). The Ripmo's 10 mm taller fork plus same head angle gives it a slacker effective stance and a fork that's better suited for hard descents. The Stumpjumper's 15 Alloy build runs a 160 mm Fox 38 instead — Specialized clearly built that one to be ridden harder.

Depends on your budget.

Under $5,000: Stumpjumper wins by default — the Ripmo's cheapest carbon build is $5,199. The 15 Comp Alloy ($3,999) and the base 15 Alloy ($2,999) are the only options here, and reviewers note the alloy frames are heavy (16+ kg).

$5,000–$8,000: Closer fight. The Stumpjumper 15 Pro ($7,999, X0 Transmission, FACT 11m carbon) is widely called out as the lineup's sweet spot. The Ripmo GX Transmission ($7,799) hits the same tier with a similar parts kit. They're $200 apart and roughly comparable.

Above $8,000: Both run flagship-tier builds; pick on aesthetics and dealer.

Ripmo V3: yes — the V3's new mini-clevis design is specifically called out (by Bebikes, Theradavist) as more coil-friendly than the V2, mitigating the bending loads that punish coil shocks.

Stumpjumper 15: technically yes — the frame uses a standard 210x55 mm shock and the S-Works LTD ships with a Fox DHX Live Valve NEO coil from the factory. But the bike's character is built around the GENIE's progressive end-stroke; swapping to a coil would change the ride substantially. The 15 (Öhlins) build is the closest factory option.

This is a real difference.

The Stumpjumper 15 carbon frames are SRAM-Transmission-only — no internal cable routing for mechanical shifting, no Shimano option. If you want a Shimano XT or XTR drivetrain on a carbon Stumpy, you can't. The alloy frames retain mechanical routing.

The Ripmo V3 keeps cable routing across the lineup — Ibis offers builds across Deore, XT Di2, XTR Di2, SRAM Eagle 90, and SRAM GX Transmission. That's meaningful for riders who want Shimano, want to keep a mechanical drivetrain, or want flexibility when it's time to upgrade.

The fit picker recommends Ripmo MD (605 mm effective top tube, 456 mm reach, 622 mm stack) and Stumpjumper S3 (595 mm effective top tube, 450 mm reach, 627 mm stack) for a 173 cm rider.

Ibis sizes by top tube length rather than reach, so reviewers note their numbers don't always feel like equivalent sizes from other brands — multiple reviews recommend a demo if you're between sizes. Specialized's S-sizing decouples reach from seat tube length, so taller riders can size up for stability without running out of standover.