A solid all-round descender (64° head angle, 150mm) — capable in the rough and steep without being an all-out bruiser.
R.XX 2027
How current the bike is — newer chassis, motor and battery score higher. 10 = brand-new, 0 = legacy.
Light carbon trail bike with strong Avinox power for versatile riding

The R.XX is Rotwild's lightweight trail bike with a full-power heart - the Avinox M2S in a deliberately light carbon chassis, hitting around 20.6 kg (Ultra, M/L) rather than the 24-26 kg of a typical full-fat e-enduro. It is the third Avinox-powered Rotwild and the trail-focused member of the family, sitting below the all-mountain R.EX and the enduro R.EXC. Think Amflow PX territory: maximum motor, minimum mass.
Motor & battery
The Pro and Ultra run the flagship Avinox M2S - 130 Nm / 1,300 W continuous, rising to 150 Nm / 1,500 W in Boost - still the most powerful mainstream e-bike motor going. Worth knowing: the entry Core steps down to the Avinox M2 (110 Nm / 1,100 W continuous, 125 Nm Boost), so the cheapest bike is genuinely less powerful, not just lower-specced. Power comes from a fully integrated, non-removable 700 Wh Avinox pack (cylindrical-cell, 3.18 kg). Rotwild deleted the battery hatch on purpose - a fully enclosed down tube saves weight and adds frame stiffness - so the trade-off is that you charge the whole bike rather than pulling the pack. 700 Wh is about average capacity, the deliberate cost of the low weight.
Frame & suspension
The frame is high-modulus 1,100-fibre Toray carbon front triangle and elevated stays, in Rotwild's signature elevated-stay "Elevated Box Design". Suspension is a four-bar linkage delivering 150 mm rear (paired with a 160 mm fork), with the main pivot in a more conventional position than its enduro siblings. Rotwild quote a lower initial leverage ratio than the R.EX, which gives a firmer, more supportive baseline and a more active, poppy ride - this is tuned for direct trail feedback, not plush enduro wallow. Cable routing is internal but not forced through the headset, which is a welcome touch.
Geometry & fit
Modern trail rather than enduro: a 64° head angle, a steep 77° seat angle and a 345 mm BB height across all five sizes. Reach spans 430-520 mm (S-XL) in ~25 mm steps, with size-specific chainstays (435 mm on the S out to 460 mm on the XL) and wheelbases from 1,203 to 1,338 mm. Sizes S and M run mullet (27.5in rear); from M/L upward it is a full 29er. Two fit notes from the launch: the seat tubes are long (494 mm on the XL) but paired with an infinitely-adjustable, fully-integrated Eight Pins dropper (up to 240 mm on the XL), and that post is known to drop with little resistance - it tends to slam. All sizes get a 40 mm riser bar, and stack is generous on the bigger frames.
The builds (Rotwild prices in EUR; a UK GBP RRP was not published at launch)
- Core - €8,490: the value entry, but on the less powerful Avinox M2. Fox 36 Float Rhythm fork, Float X Performance shock, alloy Newmen wheels and a mechanical SRAM Eagle 90 drivetrain.
- Pro - €9,990: the cheapest way to the full M2S, with SRAM GX AXS Transmission and Newmen Phase carbon wheels - arguably the sweet spot.
- Ultra - €11,990: M2S, Fox Factory (Grip X) suspension, SRAM X0 AXS, carbon wheels and bar - the 20.6 kg headline build. SRAM Motive brakes on 200 mm HS2 rotors and Schwalbe Albert (soft) tyres feature across the range. A fully-loaded configurator build (170 mm Fox Podium fork, SRAM XX) tops out around €13,490.
For riders who want Avinox power and trail-bike agility without e-enduro mass, the R.XX is one of the sharper options out there - just go in knowing the battery is sealed in and the Core's motor is the junior unit.
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.
Short 452mm rear and a lighter build — easy to pop, manual and throw around.
Balanced front-to-rear in L (FC:RC 1.87) — weight sits evenly between the wheels.
Avinox M2S and a steep 77° seat angle keep the weight planted over the front — a proper winch. 1500W of peak power and 150Nm of torque — among the most powerful e-bike motors made.
Easy to throw around; happiest when you're active on the bike.
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 | M/L | |
|---|---|---|---|---|---|
| Reach | 430 mm | 455 mm | 495 mm | 520 mm | 475 mm |
| Stack | 623 mm | 632 mm | 650 mm | 663 mm | 641 mm |
| Seattube | 399 mm | 423 mm | 470 mm | 494 mm | 447 mm |
| Chainstay | 435 mm | 440 mm | 452.5 mm | 460 mm | 445 mm |
| Headtube Angle | 64° | 64° | 64° | 64° | 64° |
| Seattube Angle (eff) | 77° | 77° | 77° | 77° | 77° |
| Wheelbase | 1203 mm | 1237 mm | 1299 mm | 1338 mm | 1267 mm |
| Headtube | 105 mm | 115 mm | 135 mm | 150 mm | 125 mm |
| BB Height | 345 mm | 345 mm | 345 mm | 345 mm | 345 mm |
| Standover | 754 mm | 754 mm | 754 mm | 754 mm | 754 mm |
| Front Centre | 768 mm | 797 mm | 846.5 mm | 878 mm | 822 mm |
| FC:RC | 1.77 | 1.81 | 1.87 | 1.91 | 1.85 |
Trims · 3
Core €8,490 | Pro €9,990 | Ultra €11,990 | |
|---|---|---|---|
| Motor | Avinox M2 · 110 Nm | Avinox M2S · 150 Nm | Avinox M2S · 150 Nm |
| Battery | Avinox FP700 · 700 Wh · all trims | ||
| Travel F/R | 160/150 mm · all trims | ||
| Frame | Polydynamic Carbon · all trims | ||
| Fork | FOX 36 Float Rhythm, 160 mm, Grip / Sweep Adjust | FOX 36 Float Performance, 160 mm, Grip / Sweep Adjust | FOX 36 Float Factory Kashima, 160 mm, Grip X / HSC/LSC / LSR |
| Shock | FOX Float X Performance, 205 x 60 mm, 2-Pos | FOX Float X Performance, 205 x 60 mm, 2-Pos | FOX Float X Factory Kashima, 205 x 60 mm, 2-Pos Adjust |
| Headset | ACROS RW EXC · all trims | ||
| Stem | ROTWILD S120, 35 mm length · all trims | ||
| Handlebar | NEWMAN Beskar, 40 mm rise, 760 mm (S/M) / 780 mm (ML/L/XL) width | NEWMAN Beskar, 40 mm rise, 760 mm (S/M) / 780 mm (ML/L/XL) width | NEWMAN Phase Carbon, 40 mm rise, 760 mm (S/M) / 780 mm (ML/L/XL) width |
| Grips | ERGON GDH TEAM · all trims | ||
| Saddle | ERGON SM Sport | ERGON SM Sport | ERGON SM Pro |
| Seatpost | 8PINS H01, up to 200 mm (XL) | 8PINS NGS3.0, up to 225 mm (XL) | 8PINS NGS3.0, up to 225 mm (XL) |
| Brakes | SRAM Motive Bronze (front and rear) | SRAM Motive Bronze (front and rear) | SRAM Motive Silver (front and rear) |
| Rear derailleur | SRAM EAGLE90 | SRAM GX Eagle Transmission AXS | SRAM X0 Eagle Transmission AXS |
| Crank | e*thirteen Plus CORE & PRO, 160 mm (S/M/ML/L) / 165 mm (XL); chainring e*thirteen Spider / SRAM 34T; ROTWILD XX Chainguide | e*thirteen Plus CORE & PRO, 160 mm (S/M/ML/L) / 165 mm (XL); chainring e*thirteen Spider / SRAM 34T; ROTWILD XX Chainguide | e*thirteen Race Carbon, 160 mm (S/M/ML/L) / 165 mm (XL); chainring e*thirteen Spider / SRAM 34T; ROTWILD XX Chainguide |
| Shifters | SRAM EAGLE90 Trigger | SRAM AXS Pod | SRAM AXS Pod |
| Cassette | SRAM GX Eagle XS 1270, 10-52 T, 12-Speed | SRAM GX Eagle XS 1270, 10-52 T, 12-Speed | SRAM X0 Eagle XS 1275, 10-52 T, 12-Speed |
| Chain | SRAM GX Eagle Transmission | SRAM GX Eagle Transmission | SRAM X0 Eagle Transmission |
| Drivetrain | SRAM EAGLE90; e*thirteen Plus CORE & PRO, 160 mm (S/M/ML/L) / 165 mm (XL); chainring e*thirteen Spider / SRAM 34T; ROTWILD XX Chainguide; SRAM EAGLE90 Trigger; SRAM GX Eagle XS 1270, 10-52 T, 12-Speed; SRAM GX Eagle Transmission | SRAM GX Eagle Transmission AXS; e*thirteen Plus CORE & PRO, 160 mm (S/M/ML/L) / 165 mm (XL); chainring e*thirteen Spider / SRAM 34T; ROTWILD XX Chainguide; SRAM AXS Pod; SRAM GX Eagle XS 1270, 10-52 T, 12-Speed; SRAM GX Eagle Transmission | SRAM X0 Eagle Transmission AXS; e*thirteen Race Carbon, 160 mm (S/M/ML/L) / 165 mm (XL); chainring e*thirteen Spider / SRAM 34T; ROTWILD XX Chainguide; SRAM AXS Pod; SRAM X0 Eagle XS 1275, 10-52 T, 12-Speed; SRAM X0 Eagle Transmission |
| Wheels | Newmen aluminium wheelset, 29in | Newmen Phase carbon wheelset, 29in | Newmen Phase carbon wheelset, 29in |
| Tyres | Schwalbe Albert Evo Radial, Trail / Soft / TLR; front 29x2.5; rear 27.5x2.5 (S/M) / 29x2.5 (ML/L/XL) · all trims | ||
| Weight | — | 20.9 kg | 20.6 kg |
| Price | €8,490 | €9,990 | €11,990 |
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