Polarna M4
The Polarna M4 is an electric bike with a 14 Ah large-capacity battery, a self-developed 750W motor, a weight of 31.7kgs, a 20"*4.0 wheel and a load capacity of 160kgs.
Last updated: 8 November 2026
Motor and performance
- Speed range across the assist levels
- 30MPH
- Torque
- 60N.M
- Payload capacity
- 160kgs
- Motor specification
- self-developed 750W motor
“The maximum speed can reach 30MPH at no load, the maximum torque 60N.M, and it can climb 25-35 degrees.”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
“The maximum speed can reach 30MPH at no load, the maximum torque 60N.M, and it can climb 25-35 degrees.”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
“Net Weight : 31.7kgs Load Weight : 160kgs”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
“Powerful brushless 750W motorThe POLARNA electric bicycle uses a self-developed 750W motor”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
Battery and charging
- Battery
- 14 Ah large-capacity battery
- Charging time, stated for the machine
- 5-7 hours
- Removable battery
- removable
- Case material
- Aluminum Alloy Folding Frame
“This electric bike is equipped with 14 Ah large-capacity battery.”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
“The battery can be fully charged in 5-7 hours.”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
“The battery of e bike is designed to be removable.”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
“Frame/Fork : Aluminum Alloy Folding Frame”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
Brakes and safety
- Brakes
- Front And Rear Aluminum Alloy Hydraulic Power-off Disk Brakes HD-E500
“Brakes : Front And Rear Aluminum Alloy Hydraulic Power-off Disk Brakes HD-E500”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
Frame and components
- Suspension
- Full suspension
- Gearing
- 8 speed
- Wheel size
- 20"*4.0
“Comfort : Full suspension”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
“Tyres : Black 20"*4.0 with 30TPI Gear : 8 speed”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
“Tyres : Black 20"*4.0 with 30TPI”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
Size and fit
- Weight
- 31.7kgs
- Overall dimensions
- 960*600*770mm / 1700*590*1210mm
“Gear : 8 speed Net Weight : 31.7kgs”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
“Folded & Unfolded Dimensions : 960*600*770mm / 1700*590*1210mm”
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
Identity
- Model name as declared
- M4
“Solemnly promiseM4 will not have spoked wheels in the future.”
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
Sources
- Archived document
Source: shopabunda.com/products/polarna-electric-bike-for-adults-20-ebike-full-suspension-750w-motor-fat-tire-electric-bike-mountain-beach-snow-bike-48v-14ah-removable-battery-32mph
Retrieved October 12, 2026
- Polarna M4 20“ Electric Mountain Bike Foldable With 750W Motor 48V 14A – Polarna EbikeArchived document
Source: web.archive.org/web/20250218113354/https://polarnaebike.com/products/polarna-gdsebike-20-fat-electric-bike-with-750w-motor-48v-14ah-battery
Retrieved November 8, 2026