R.EX CORE
Racing meets All Mountain
Full Carbon Frame
Racing meets All Mountain. The frame design of the R.EX is an evolution of the ROTWILD World Cup racer R.EXC and is just as unwavering. The frame combines the uncompromising performance of racing with the agility for everyday rides. Made from high modulus carbon, it offers the ideal balance between durability and low weight. Through extensive FEM simulations, numerous prototype builds, and intensive testing, our engineering team has developed the optimal frame design. Each frame is meticulously handcrafted and enhanced with a new surface finish. This is what we mean by: racing technology thoroughly implemented!
Elevated Box Design
Recognizable at first glance: the silhouette of the ROTWILD R.EX is characterized by the new Elevated Box Design and the significantly raised chain stay. The large volume of the carbon swingarm ensures symmetrical stiffness performance. The cross brace between the two chain stays has also been moved upwards, providing the rear wheel with the necessary tire clearance – especially beneficial in muddy conditions. Additionally, chain slap is effectively avoided, resulting in particularly low riding noise.
Shimano EP801 Motor
The Shimano EP801 motor is a standout piece of innovative e-bike technology, perfect for e-enduro racing and challenging trail riding. Its key features include powerful performance, numerous customization options, low weight, openness to future technological developments, and seamless integration into the R.EX frame. With torque up to 85 Nm, the Shimano EP801 provides strong support while allowing the use of ROTWILD's proprietary battery technology.
IPU Carbon Battery 820 Wh
Maximum range with the latest technology! The battery of the R.EX is a proprietary development by the ROTWILD engineering team. For the first time, we are using Gen2 high-performance cells, type 21700, in the R.EX. These offer an impressive capacity of 820 Wh, setting a new benchmark in battery technology. To save weight, we integrate the cells into a very lightweight carbon housing. Thanks to the quick release mechanism, the battery can be removed and reinserted in seconds.
Mid-High Pivot Suspension
The best of both worlds: The more forward and upward positioned pivot point of the R.EX frame combines the advantages of a traditional four-bar rear suspension with those of a high-pivot setup. This design keeps the chain stay length relatively constant during compression, avoiding a particularly high anti-rise value. The result is a very active and responsive suspension, maintaining the sensitivity of the rear end. The anti-rise value remains between 65 % and 49 % throughout the entire suspension travel, effectively preventing brake dive. The anti-squat value stays constant between 106 % and 108 %, ensuring the chain tension stabilizes the suspension, providing efficient power transmission, traction, and high sensitivity of the suspension.
Mullet Setup
Improved roll-over performance and track stability: The 29-inch front wheel makes it easier to roll over obstacles and provides better stability. At the rear, the 27.5-inch wheel creates short, nimble chainstays, offering extra grip, which is especially beneficial when accelerating or on power-intensive climbs. By combining these two wheel sizes, we achieve a balanced ride that offers both stability and agility. The Mullet Setup optimally leverages the advantages of both wheel sizes, making the R.EX ideal for challenging trails and technical routes.
Eightpins Seatpost
The frame of the R.EX is designed specifically for the use of the innovative Eightpins seat post. This seat post offers a wide range of adjustments and a travel of up to 225 mm for size XL frames, providing maximum freedom of movement. Thanks to the easy-to-use height adjustment, the seat post can be quickly and individually adjusted to fit your body size. Its special design makes the Eightpins seat post up to 30% lighter than comparable models, while the larger tube diameter ensures additional stability.
Configuration R.EX CORE
Rear Shock
FOX Float X Performance
Headset
ACROS RW EXC 1.5
Fork
FOX 36 Float Performance
Handlebar
e*thirteen Plus
Stem
e*thirteen Plus 35
Display
SHIMANO EM800
Seat post
8PINS H01
Saddle
ERGON SM Sport
Grips
ERGON GD10
Motor
SHIMANO EP801
Battery
IPU820 Carbon - Push+
Charger
ROTWILD - 4.5 A
Crankset
e*thirteen Plus
Chainring
e*thirteen Direct Mount Chainring
Chain guide
ROTWILD EXC
Rear Shifter
SHIMANO XT 8100
Rear derailleur
SHIMANO XT 8100 SGS
Chain
SHIMANO HG 7100
Cassette
SHIMANO CS 6100
Front Brake
MAGURA MT5
Front Brake Rotor
MAGURA MDR-P
Rear Brake
MAGURA MT5
Rear Brake Rotor
MAGURA MDR-P
Front Wheel
CRANKBROTHERS Synthesis Enduro
Rear Wheel
CRANKBROTHERS Synthesis Enduro
Front Tire
SCHWALBE Albert Evo
Rear Tire
SCHWALBE Albert Evo
Errors and omissions excepted.
