The Rocky Mountain Instinct, in most conditions. With a 63.5-degree head tube angle (in its slackest RIDE-4 setting), a 1,227 mm wheelbase in size md, and 140 mm of rear travel paired with a 150 mm fork, it's geometrically closer to a short-travel enduro than a traditional trail bike. Reviewers consistently call it stable and planted at speed.

The Kona Process 134 descends well above its 134 mm of travel — Blister explicitly called it a 'Trail bike that thinks of itself as a longer travel bruiser' — but its 65.5-degree head angle and shorter 1,200 mm wheelbase (size M) make it sharper and more demanding when speeds get high in loose, steep terrain. Pinkbike noted the rider can 'feel a little vulnerable' on the steepest descents.

The Kona Process 134, marginally — its steeper 65.5-degree head angle and shorter wheelbase make it feel more efficient on rolling singletrack, and Pinkbike found the suspension neutral enough on smooth fire roads to skip the climb switch entirely.

That said, both bikes have caveats. The Kona's 76.6–76.9-degree seat tube angle felt 'too far off the back' to Pinkbike's reviewer on very steep climbs, requiring saddle adjustment. The Rocky has steeper effective seat angles (up to 77.3° in some RIDE-4 settings) but Pinkbike criticized the open-mode shock as wallowy under power. Most riders will reach for the Rocky's climb switch more often than the Kona's.

More than you'd guess. The RIDE-4 link changes both the head and seat angles plus the suspension kinematics. The chainstay flip chip moves the rear axle between 437 mm and 447 mm. The +/- 5 mm reach-adjust headset shifts your fit. NSMB counted 48 possible combinations.

In practice, most riders pick a setting and leave it. But the option to slacken the bike for a bike-park weekend, or steepen it for a long climb-heavy day, is a genuine feature — not just a marketing list. The Kona has none of this; it's one geometry, take it or leave it.

Different philosophies. The Kona Process 134 runs a linkage-driven single pivot shared with the Process X enduro. Reviewers consistently describe it as firm off the top, supportive in the mid-stroke, and rewarding an active, poppy riding style. Pinkbike noted the suspension 'noticeably stiffens up under braking' — a quirk to adapt to.

The Rocky Mountain Instinct runs a Horst Link with size-specific shock tunes. Most reviewers found it plush off the top with active braking. The catch is the stock Fox Float X Performance Elite tune on builds like the Carbon 70 — Pinkbike called it underdamped and wallowy under hard riding, while Jeff Kendall-Weed found it fine after setup. Heavier or more aggressive riders may want a re-valve or a coil shock.

The Kona Process 134 runs $1,999 to $4,899. The Rocky Mountain Instinct runs $3,399 to $9,449 — its cheapest build is more expensive than two of the four Konas.

At comparable specs (both bikes with SRAM GX Eagle Transmission AXS and a carbon frame), the Kona CR/DL is $4,899 and the Rocky Carbon 70 is $5,499 — a $600 premium for the Rocky. You're paying for adjustable geometry, in-frame storage, a slightly burlier 150 mm fork, and Rocky's dealer network. Whether that's worth it depends on how much you'd actually use the adjustments.

The Rocky Mountain Instinct is the more natural park bike of the two — slacker geometry, more travel up front (150 mm vs 140 mm), and a wheelbase that holds a line through chunder. Reviewers explicitly use it for bike-park laps in its slacker settings.

The Kona Process 134 can absolutely do park days — its frame is tough, the linkage shares parts with the Process X enduro, and Blister praised it on flow trails — but you'll feel the limits of 134 mm of rear travel sooner on bigger drops and rougher terrain. For occasional park use it's fine; for a steady diet of it, the Instinct is the safer pick.

Kona offers a 25-year frame warranty per Bike-test's reporting on the carbon and aluminum models, though Pinkbike's CR/DL review specifically lists a 3-year warranty on the carbon model and lifetime on aluminum. Confirm with your dealer before buying — this is a real discrepancy in the published reviews.

Rocky Mountain's stock warranty is a lifetime-to-original-owner frame warranty (subject to their published terms), and reviewers consistently praise the brand's responsive customer service and parts availability. Both brands have proper dealer networks, which matters more for a 140 mm trail bike than it does for a road race bike.

Roughly even at the editor's-pick price points, with different choices. The Kona CR/DL ($4,899) gets a RockShox Pike Ultimate fork, Super Deluxe Ultimate RCT shock, GX Eagle Transmission AXS, and DT Swiss 350 hubs — the 350 has noticeably faster engagement than the 370.

The Rocky Mountain Carbon 70 ($5,499) gets a Fox 36 Performance Elite GRIP X fork, Float X Performance Elite shock, GX Eagle Transmission AXS, and DT Swiss 370 hubs — multiple reviewers flagged the slow 18T 370 engagement as the build's weak link. Both bikes were criticized for SRAM G2 brakes feeling underpowered for the descending capability of the frames; budget for a brake upgrade if you ride hard.