ROTWILD - R.E850 ULTRA

🏍️ ROTWILD R.E850 ULTRA — 2026 Model Year

🔥 Top-tier high-modulus carbon Enduro e-MTB — FOX Factory Kashima 170mm, Shimano XT Di2, Crankbrothers I9 Carbon wheels, and XT ICE 203mm braking power
Powered by Shimano EP801 (85Nm) with a removable 820Wh battery and QR quick-release.

📦 General Information

◦ Model: ROTWILD R.E850 ULTRA (2026)
◦ Type: Enduro / All-Mountain Electric Mountain Bike (e-MTB)
◦ Frame: High Modulus Carbon + Carbon Linkage
◦ Approved Total Weight: ASTM4 — 130 kg

🦾 Frame & Suspension

◦ Frame: High Modulus Carbon
◦ Rear Linkage: Carbon Linkage

◦ Front Fork: FOX 36 Float Factory (Kashima)
◦ Travel: 170 mm
◦ Damper: GRIP2
◦ Adjustments: HSC / LSC / HSR / LSR

◦ Rear Shock: FOX Float X Factory (Kashima)
◦ Size: 210 × 55 mm
◦ Adjustment: 2-Position (2-Pos Adjust)

◦ Headset: ACROS RW735 1.5

⚡ Motor & Battery System

◦ Motor: Shimano EP801
◦ Torque: 85 Nm
◦ Max Power: Up to 600 W

◦ Battery: IPU820 Carbon – Push+
◦ Capacity: 820 Wh
◦ Voltage: 36 V
◦ Cell Type: 21700
◦ Battery Weight: 3,560 g
◦ Removal System: QR Button (quick-release)

⚙️ Drivetrain

◦ Crankset: e*thirteen Race Carbon
◦ Crank Length: 160 mm (S) / 165 mm (M/L/XL)
◦ Chainring: e*thirteen Direct Mount 34T
◦ Chain Guide: e*thirteen Plus

◦ Shifter: Shimano XT Di2 8150 (I-Spec EV)
◦ Rear Derailleur: Shimano XT Di2 8150 SGS
◦ Chain: Shimano HG 7100 (12-speed)
◦ Cassette: Shimano CS 7100 (12-speed) 10–51T

🛑 Braking System

◦ Front Brake: Shimano XT 8120 (Fin Pad)
◦ Front Rotor: Shimano RT-MT800 ICE 203 mm
◦ Rear Brake: Shimano XT 8120 (Fin Pad)
◦ Rear Rotor: Shimano RT-EM810 ICE 203 mm

🦿 Wheels & Tires

◦ Wheelset: Crankbrothers Synthesis Enduro I9 Carbon

◦ Front Wheel: 31.5 mm internal / 110–15 mm / 6-bolt
◦ Rear Wheel: 29.5 mm internal / 148–12 mm / 6-bolt

◦ Front Tire: Schwalbe Magic Mary Evo
◦ Spec: Super Ground / Soft / TLE / 29×2.4
◦ Rear Tire: Schwalbe Hans Dampf Evo
◦ Spec: Super Trail / Soft / TLE / 27.5×2.6

🧩 Cockpit

◦ Handlebar: e*thirteen Race Carbon — 20 mm rise / 780 mm width
◦ Stem: e*thirteen Plus 35 — 50 mm length
◦ Grips: Ergon GD10 Slim Factory Frozen

🪑 Seat & Seatpost

◦ Seatpost: 8PINS H01
◦ Travel: Up to 200 mm (XL)
◦ Saddle: Ergon SM Enduro Comp

🔌 Accessories

◦ Charger: ROTWILD 4.5A

💥 Key Highlights

◦  High-modulus carbon frame + carbon linkage — light, stiff, and composed at speed
◦  FOX Factory Kashima 170mm + GRIP2 — full high/low speed compression & rebound tuning
◦  Shimano EP801 85Nm — smooth, powerful climbing support
◦  820Wh removable battery with QR release — long rides with less range anxiety
◦  Shimano XT Di2 — fast, precise electronic shifting for aggressive riding
◦  XT 8120 brakes + ICE 203mm rotors — cooler, stronger braking under load
◦  Crankbrothers Synthesis Enduro I9 Carbon — lighter, stiffer, pro-level wheels