Rotwild

R.EX ULTRAAction
All Mountain

Ultra
  • Frame: Full carbon made from high-modulus carbon fibers with optimized fiber layup / handmade
  • Motor: Shimano EP801 / up to 85 Nm / 2 riding profiles / up to 15 assistance levels
  • Battery: IPU820 / 820 watt hours / Gen2 cell technology / Carbon housing / 4A charger / Quick Release
  • Front/rear suspension travel: 160 mm / 150 mm
  • Max. tire clearance front/rear: 29x2.6 / 27,5x2.6
  • Bike weight: 21,9 kg
  • Sizes: S / M / L / XL
  • Other: Mullet, 8-pin integrated seat post, mid-high pivot kinematics
  • Back to builds
Group Logo

Components R.EX ULTRA

Frame

  • Frame

    High Modulus Carbon

  • Rear Shock

    FOX Float X Factory Kashima

    185 x 55 mm / 2-Pos Adjust

  • Headset

    ACROS RW EXC 1.5

  • Fork

    FOX 36 Float Factory Kashima

    160 mm / Grip X / HSC/LSC / LSR

  • Frame color

    Red Transparent

  • Adm. total weight

    ASTM4 - 130 kg

Drive

  • Motor

    SHIMANO EP801

    85 Nm / max. 600 W

  • Battery

    IPU820 Carbon - Push+

    820 Wh / 36 V / 21.700 Cell / 3.560 g / QR-Button

  • Crankset

    e*thirteen Race Carbon

    165 mm (S/M/L) / 170 mm (XL)

  • Chainring

    e*thirteen Direct Mount Chainring

    34 T.

  • Chain guide

    ROTWILD EXC

  • Rear Shifter

    SHIMANO XT Di2 8150

    I-Spec EV

  • Rear derailleur

    SHIMANO XT Di2 8150 SGS

    Hyperglide+

  • Chain

    SHIMANO HG 7100

    12-Speed

  • Cassette

    SHIMANO CS 7100

    10-51 T. / 12-Speed

Brakes

  • Front Brake

    SHIMANO XT 8120

    Fin Pad

  • Front Brake Rotor

    SHIMANO RT800

    203 mm / ICE

  • Rear Brake

    SHIMANO XT 8120

    Fin Pad

  • Rear Brake Rotor

    SHIMANO RT810

    203 mm

Wheels

  • Front Wheel

    CRANKBROTHERS Synthesis Enduro Carbon

    29" / 31.5 mm / 110-15 mm / TAS / CL

  • Rear Wheel

    CRANKBROTHERS Synthesis Enduro Carbon

    27.5" / 29.5 mm / 148-12 mm / TAS / CL

  • Front Tire

    SCHWALBE Albert Evo

    Trail / Soft / TLR / 29x2.5

  • Rear Tire

    SCHWALBE Albert Evo

    Trail / Soft / TLR / 27.5x2.5

Cockpit

  • Handlebar

    e*thirteen Race Carbon

    ∅ 35 mm / 20 mm Rise / 780 mm Width / Carbon

  • Stem

    e*thirteen Plus 35

    50 mm / AL7050

  • Grips

    ERGON GD10

    Slim Factory Frozen

Seat

  • Seatpost

    8PINS NGS2.0

    ∅ 34.9 mm / 25 mm Offset / up to 225 mm (XL)

  • Saddle

    ERGON SM Sport

Accessories

  • Charger

    ROTWILD - 4.5 A

Subject to changes and errors.

Geometry

Bike frame image
Frame SizeSMLXL
ASeat Tube Length (mm)405435465501
BTop Tube Length (mm)576602629655
CHead Tube Length (mm)100105110115
DChain Stay Length (mm)436436436436
EBB Height (mm)340340340340
FBB Drop (mm)25252525
GHead Tube Angle (°)64646464
HSeat Tube Angle (°)77,277,277,277,2
IReach (mm)436461485510
JStack (mm)622626631635
KWheel Base (mm)1209123612641291
LStandover (mm)745737733733
Teaser image for “From the racetrack to the trail – the new rear suspension design generates high chain-specific stiffness and balanced values between the front and rear suspension. For us, the new design is the benchmark in suspension development, with the mid-high pivot system playing a central role. The bike is more stable in its suspension travel without compromising on drive efficiency.”
“From the racetrack to the trail – the new rear suspension design generates high chain-specific stiffness and balanced values between the front and rear suspension. For us, the new design is the benchmark in suspension development, with the mid-high pivot system playing a central role. The bike is more stable in its suspension travel without compromising on drive efficiency.”
Lutz Scheffer (developer)