Slack 64.5° head angle, 150mm travel and a long 1274mm wheelbase — composed in the chunk, confident when it gets steep, and stable through fast corners.
Vuca EVO AM 2026
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.
Gearbox-motor all-rounder with a clean, low-maintenance drivetrain

The Bulls Vuca EVO AM 2026 is a fully revamped all-mountain eMTB built around the Pinion MGU E1.12, a single unit that packs an 85 Nm mid-motor and a sealed 12-speed gearbox and drives a low-maintenance Gates CDX belt rather than a chain and derailleur. The frame pairs a monocoque carbon front triangle with an aluminium 4-link swingarm on a braced single-pivot layout, giving 160 mm of fork travel (150 mm on the entry build) and 150 mm at the rear on 29in wheels. Power comes from a removable 800 Wh FIT battery, and the 2026 redesign drops the previous two-battery option in favour of a single pack.
Three builds are offered. The AM 1 (6,999 euro) runs a RockShox Lyrik Select RC fork and Deluxe Select+ shock with RUMBLE own-brand wheels and a conventional dropper. The AM 2 (8,499 euro) steps up to a RockShox Lyrik Ultimate 160 mm fork, Super Deluxe Ultimate shock, DT Swiss H-1900 wheels and an integrated 8Pins dropper. The AM 3 (9,999 euro) tops the range with a Fox Podium Factory fork, Fox Float X Factory shock, DT Swiss HX-1501 wheels and Galfer Shark rotors, with a quoted 26.4 kg in size L. All three share Shimano four-piston brakes, Schwalbe Magic Mary tyres and Pinion TE1 controls, so the difference is chassis kit rather than drivetrain.
Geometry is roomy up front and consistent across the range: reach grows from 445 mm (S) to 500 mm (XL), the head angle sits at 63.5 degrees on the smallest frame and 64.5 degrees on the rest, the effective seat angle is a steep 77 degrees, and the chainstay is a uniform 450 mm at every size. Everyday touches set it apart from pure trail rivals, with a top-tube colour display, an integrated cornering headlight and twin rear lights in the dropouts.
Note on pricing: Bulls quotes this bike as a euro RRP (6,999 / 8,499 / 9,999 euro) and no genuine UK sterling RRP was published at the time of writing, so the pound figures shown by some aggregators are currency conversions rather than an official price.
What the numbers mean on the trail
Computed from this bike's geometry, spec and build kit — reach, wheelbase, chainstay, head and seat angles, travel, motor, weight and the fork/tyre/brake spec — and worked out per size, because a fixed chainstay can make an S and an XL feel very different.
A fair bit of pop, but happiest on flowing trail rather than trials moves.
Balanced front-to-rear in L (FC:RC 1.83) — weight sits evenly between the wheels.
Climbs well — a 77° seat keeps the front planted. 600W of peak power and 85Nm of torque — a strong full-power motor.
Rewards commitment; it should feel calmer as the speed rises.
The numbers are well balanced for its category.
How it stacks up vs other Full Power · Trail bikes (from 271 bikes in the database)
Geometry · hover a row to highlight the measurement on the bike
| S | M | L | XL | |
|---|---|---|---|---|
| Reach | 445 mm | 460 mm | 480 mm | 500 mm |
| Stack | 628 mm | 643 mm | 652 mm | 661 mm |
| Seattube | 410 mm | 410 mm | 470 mm | 510 mm |
| Chainstay | 450 mm | 450 mm | 450 mm | 450 mm |
| Headtube Angle | 63.5° | 64.5° | 64.5° | 64.5° |
| Seattube Angle (eff) | 77° | 77° | 77° | 77° |
| Wheelbase | 1241 mm | 1250 mm | 1274 mm | 1299 mm |
| Headtube | 110 mm | 120 mm | 130 mm | 140 mm |
| Front Centre | 791 mm* | 800 mm* | 824 mm* | 849 mm* |
| FC:RC | 1.76 | 1.78 | 1.83 | 1.89 |
Trims · 3
AM 1 €6,999 | AM 2 €8,499 | AM 3 €9,999 | |
|---|---|---|---|
| Motor | Pinion MGU (E1.12) · 85 Nm · all trims | ||
| Battery | FIT 800 · 800 Wh · all trims | ||
| Travel F/R | 160/150 mm · all trims | ||
| Frame | Carbon (monocoque front triangle) / aluminium 4-link swingarm · all trims | ||
| Fork | RockShox Lyrik Select RC, 1.8 Steerer, 150 mm (air) | RockShox Lyrik Ultimate, 1.8 Steerer, 160 mm (air) | FOX Podium Factory Series, 160 mm (air) |
| Shock | RockShox Deluxe Select+ RL | RockShox Super Deluxe Ultimate | FOX Float X Factory Series, 2-pos |
| Headset | ACROS AZX-274, ZS56/28.6/ZS66/46 | ACROS AZX-274, ZS56/28.6/ZS66/46 | ACROS AZX-279, ZS56/28.6/ZS66/40 |
| Stem | RUMBLE Altimate | — | — |
| Handlebar | RUMBLE Altimate 35 Riser | RUMBLE Altimate PRO Carbon (integrated bar/stem unit) | RUMBLE Altimate PRO Carbon (integrated bar/stem unit) |
| Grips | ERGON GX10 | — | — |
| Saddle | SELLE ROYAL SRX | Prologo Proxim 400 wide | Prologo Proxim Nembo |
| Seatpost | RUMBLE Escalator dropper, 34.9 mm / 170 mm with remote | 8PINS hydraulic dropper post | 8PINS hydraulic dropper post |
| Brakes | SHIMANO 4-piston hydraulic disc (Deore BR-M6120) | SHIMANO 4-piston hydraulic disc (Deore XT BR-M8220) | SHIMANO 4-piston hydraulic disc (XTR BR-M9220) with Galfer Shark rotors |
| Crank | PINION | PINION | PINION CNC |
| Shifters | PINION TE1 · all trims | ||
| Cassette | GATES CDX, 32T belt sprocket · all trims | ||
| Chain | GATES CDX belt · all trims | ||
| Drivetrain | PINION; PINION TE1; GATES CDX, 32T belt sprocket; GATES CDX belt | PINION; PINION TE1; GATES CDX, 32T belt sprocket; GATES CDX belt | PINION CNC; PINION TE1; GATES CDX, 32T belt sprocket; GATES CDX belt |
| Wheels | RUMBLE Impeller 33, tubeless ready | DT SWISS H-1900, tubeless ready | DT SWISS HX-1501, tubeless ready |
| Tyres | SCHWALBE Magic Mary Performance | SCHWALBE Magic Mary Performance | SCHWALBE Magic Mary Evo ST (S) / Big Betty Evo SG (S) |
| Weight | 25.9 kg | 25.5 kg | 26.4 kg |
| Price | €6,999 | €8,499 | €9,999 |
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