eGravel/eRoad

Motor R820

The R820 hub motor is designed for light weight eGravel bikes, delivering 40Nm of torque in a lightweight 2.0 kg design. With a thru-axle system, magnetic connector, and thermally optimized performance, it ensures direct power transfer, easy maintenance, and a perfect balance of agility and control across any terrain.

Parameter

Physical Features

Construction : Gear Drive

Weight : 2.0 Kg

Noise Grade : ≤55 dB

Performance & Technical

Rated Voltage : 36V DC

Rated Power : 250 W

Max Torque : 40 N.m

Key points

Powerfull and lightweight

Simple internal cable routing

Thermally optimized performance

Compatible with 12-speed cassettes

OLD of 142 mm

Magnetic connector

Learn More Inquiry Now

What makes it unique !

The 12mm thru-axle design, coupled with the magnetic connector for easy power cord disconnection, assures of being back on the trails within minutes after a flat tire.

Lightweight and powerful

Delivers 40 Nm of torque in a compact 2.0 kg package, with thermal optimization that ensures consistent performance even on demanding climbs.

Smooth integration

Features a 12 mm thru-axle, 12-speed drivetrain compatibility, and internal cable routing for a clean and modern look.

Hassle-free assembly and maintenance

Designed with a standard 142 mm eGravel fit and a magnetic connector for quick and easy power cord removal.

Construction Gear Drive
Weight (Kg) 2.0
Color Black
Noise Grade (dB) ≤55
Operation Temperature (°C) -20~55
Brake Type Disc Brake  /  V Brake
Cable Routing Shaft Side, Left
Spoke specification 32H*14G
Free wheel Cassette 12S
Rated Voltage (DC) 36V
Rated Power (W) 250
Max Torque (N.m) 40
Max efficiency ≥80%
Certifications CE / RoHS / REACH
Waterproof IPX6
Cable Length (mm) 250
A: 39.4mm
B: 128mm
C: 109.4mm
D: 19mm
E: 18.7mm
F: 45.9mm
O.L.D: 142mm

Comparison Motor

O.L.D
Construction
Rated Voltage (DC)
Rated Power (W)
Max Torque (N.m)
Max efficiency
Weight (Kg)
Color
Noise Grade (dB)
Operation Temperature (°C)
Brake Type
Cable Routing
Cable Length (mm)
Spoke specification
Free wheel
Certifications
Waterproof

R820

eGravel/eRoad

142mm
Gear Drive
36V
250
40
≥80%
2.0
Black
≤55
-20~55
Disc Brake  /  V Brake
Shaft Side, Left
250
32H*14G
Cassette 12S
CE / RoHS / REACH
IPX6

M99CD

eGravel/eRoad

142
Gear Drive
36V
250
35
≥80%
1.9
Black
≤50
-20~55
Disc Brake / V Brake
Shaft side, Left
250
32H*13G
Cassette 10S
CE / RoHS / REACH
IPX5

HMI eBike System

Discover
HMI D26
Learn More
Systems eGravel/eRoad
Display Technology LED
Screen Size / Inch

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