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1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
Free UK Delivery
Easy installation
1-year warranty

1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike

E-Bike Conversion Kit for Fat Tire Bikes, waterproof design! Bluetooth app control for easier tuning, real-time data, and smarter riding.
£852.55
£100.00 OFF
Power: 1500W-2000W
Included 1YR Manufacturer Warranty
Free Shipping to UK
50-60KM/h | Max Speed
Range: 35-85KM
Get 250W legal 25km/h limit speed by display button.
No need a Key Fob.
Wheel:20"*4.0 （7 Speed Freewheel Thread 175mm Dropouts ）
Battery:52V 20AH DP Lithium Battery
Charger:2A Standard
Quantity:
Note:
1）It is the rear motor wheel.
2）It is suitable for fat bike which dropouts is 175mm or 190mm.
Free Accessories Included
Brake Sensor £20,00
Free
Torque Arm £10,00
Free
ECMF £15,00
Free
D12L PAS £20,00
Free
Tool Kit £10,00
Free
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The KirbEbike features a 52V 2000W brushless direct-drive motor in an all-black design, paired with sturdy wheels for disc brakes (135–142mm open size) that fit most bike frames. Capable of reaching speeds up to 50–60 km/h, you can choose between a 52V/20Ah or 52V/30Ah lithium battery for a range of 40–80+ km.

This kit includes advanced brake levers, an LCD8IF color display, a 1T4 waterproof main cable harness, V12 PAS, a thumb throttle, and electric braking—delivering excellent performance, comfort, and style. Always consult a professional for a safe conversion and verify local e-bike regulations before riding. Batteries ship separately.

PLEASE NOTE THIS KIT IS FOR OFF-ROAD USE ONLY

🇬🇧 Fast & FREE UK Delivery
We offer 100% FREE Shipping on all orders within the UK! Your e-bike kit will arrive quickly at your door within 3-5 business days.

🌍 Premium Global Shipping
We also proudly ship to the US, EU, Canada, Australia, Japan, and worldwide. International orders are dispatched via trusted premium carriers (DHL, FedEx, TNT) to ensure reliable service. Shipping rates are transparently calculated at checkout, and most global orders arrive within 5-14 business days (please allow slight delays for remote areas).

📦 Secure Battery Shipping Notice
For maximum safety and faster customs clearance, your e-bike kit and battery will be shipped in two separate, securely tracked packages. Both parcels are fully monitored to ensure they reach you safely.

We stand behind the quality of our kits. Wherever you ride, we’ve got you covered with our 1-Year Global Warranty.

🇬🇧 UK Riders (Full Coverage): Enjoy complete peace of mind with 1-year FREE repair service covering both your entire e-bike system and the battery.

🇺🇸 🇳🇱 US & Netherlands: Includes 1-year FREE repair service specifically dedicated to your e-bike battery.

🌍 Global Support: All international orders are fully backed by our standard 1-year global warranty against manufacturing defects.

If you encounter any issues with your kit or battery, our technical team is here to help! Please contact us directly at support@kirbebike.com.
power output
1500W-2000W  | motor wheel
Battery Specs
52V 20AH/30AH  | Lithium Battery
top speed
50+MPH  | Max Speed
ride range
35-85km  | Mile Range
motor weight
6.8kg  | Motor Weight
Install Time
30 Minutes  | Convert Your Bike
Voltage Peak
58.8V  | Full Charged
charging
2A: 10hours 4A: 5hours  | Fast Recharge
durability
800 Times  | Cycle Life (Long-Lasting)
torque
60Nm  | Max Torque
Secure. Stable. Theft-Resistant.

Triangle Battery Installation Guide

Installing the triangle battery is simple and reliable, offering enhanced anti-theft protection, safety, and stability so your battery stays firmly in place and protected on every ride.
1

Install the Base Mount

Secure the base plate to the bike frame.
2

Attach the Clamps

Fasten the clamps to lock the base plate into place.
3

Mount the Battery

Slide the battery onto the base until it locks in place.
4

Lock and Secure

Tighten the screws and lock to complete installation.
Image Alt
FOC Controller for 1000W–4000W E-Bike Conversion Kits
Ultimate Control. Smarter Power. Waterproof by Design.
Tune speed, torque, throttle response, PAS levels, regenerative braking, and current limits through the Ride Power App for a fully customized ride. With a waterproof controller and a fully waterproof system, the kit is built for more reliable performance in all-weather riding.
App Control
Smart App Control
Weatherproof
Fully Waterproof System
Image Alt
High performance, powerful, and Long Service Life.
The 1500W-2000W brushless gearless hub motor is powerful and good for climbing, the 80mm wide double wall aluminum alloy for fat tire bike, black color, black painted spokes to prevent rust, and 12G spokes are strong for the safe.
1500W-2000W
Motor Power
60Nm
Max Torque
Image Alt
Flexible Installation Design
Compact Design. Flexible Fit. Secure Installation.
Designed with a more compact shape, this battery takes up less space and fits more bike frames with ease. It supports Top Tube / Down Tube mounting, giving you more flexibility when planning your setup. Paired with the bracket and mounting plate system, installation is simpler, more secure, and better equipped for anti-theft protection, everyday safety, and ride stability.
Flexible
Tube Mounting
Secure
Bracket Lock
Image Alt
Secure Anti Theft Mount
Bracket Mounting for More Security, Stability, and Anti-Theft Protection
This battery uses a bracket mounting system for a more secure and stable installation. It stays firmly in place while riding and is less likely to shift or loosen over time. Supporting Top Tube / Down Tube mounting, it fits a wider range of bike frame layouts. The bracket design also adds an extra layer of anti-theft protection, giving you more confidence both while riding and when parked.
Stable
Bracket Mounting
Lockable
Parking Security
Secure
Anti-Theft Protection
Image Alt
More Power, More Miles
Powerful, Longer Range, and After-sale service
The KirbEbike e-bike kit is combined with a new 52v20Ah or 52v30Ah lithium battery that is powerful. The battery effectively increases the range, stability, and safety of the bike. The range is 35-85km on a single charge and the battery will retain 80% of its capacity after 1000 charges. The life span of the lithium battery pack is 3 years.
35-85Km
Mile Range
20Ah-30Ah
Battery Capacity
5 Hours
Time Until Fully Charge
Image Alt
Fast Charging & IP65 Protection
High Capacity, Fast Charging, and IP65 Waterproof Protection
Designed for everyday riding and outdoor use, the HS battery series combines high energy capacity with fast 4–5 hour charging and reliable IP65 waterproof protection, giving you more convenience and confidence in changing conditions.
Up to 1560Wh
High Capacity
IP65
Weatherproof
Image Alt
Provides information on speed, mileage, power, temperature, etc.
LCD81F Color Display Meter
Experience smarter rides with the LCD81F Color Display Meter. Track your speed, mileage, power, and battery status at a glance, all on a vivid TFT screen. With cruise control, walk assist, and real-time signals, every ride is smoother, safer, and more enjoyable.
IP66
Waterproof Rating

Find Your Perfect Model

1500W-2000W
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72V 4000W
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Best For
Fat Tire Kits
Fat Tire Kits
Motor Power
1500W-2000W
4000W
Full Charged Voltage
58.8V
84V
Wheel Position
Rear Wheel
Rear Wheel
Wheel Size
20” / 26”
26” / 27.5” / 29”
Bike Compatibility
Fat Bike / Road Bike
MTB
Top Speed
50+MPH
55MPH+
Range
35-85km
30-40km
Battery Required
52V 30Ah / 52V 20Ah / 52V 25Ah
72V20AH / 72V20AH
Battery Included
Optional
Optional
Installation Level
Medium
Medium
Brake Compatibility
Disc Brake
Disc Brake
Waterproof Cables
Yes
Yes
App Support
Yes
Yes
1500W-2000W
1500W-2000W Ebike Conversion Kit For Fat Wheel Electric Bike
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Best For
Fat Tire Kits
Fat Tire Kits
Motor Power
1500W-2000W
4000W
Full Charged Voltage
58.8V
84V
Wheel Position
Rear Wheel
Rear Wheel
Wheel Size
20” / 26”
26” / 27.5” / 29”
Bike Compatibility
Fat Bike / Road Bike
MTB
Top Speed
50+MPH
55MPH+
Range
35-85km
30-40km
Battery Required
52V 30Ah / 52V 20Ah / 52V 25Ah
72V20AH / 72V20AH
Battery Included
Optional
Optional
Installation Level
Medium
Medium
Brake Compatibility
Disc Brake
Disc Brake
Waterproof Cables
Yes
Yes
App Support
Yes
Yes
View More

52V 30Ah Battery

Charger 58.8V 5A
Battery Capacity 52V 25Ah
Range 55-85 km
Cycle Life 1000 Times
Charging Time 5 hours
Weight 7.55kg
Size 360.6 × 281.3× 195.4x 131.6mm
Fit for 500W-3000W motor

52V 20Ah Battery

Charger 58.8V 2A
Battery Capacity 52V 20Ah
Range 35-70 km
Cycle Life 1000 Times
Charging Time 10 hours
Weight 5.1kg
Size 368x 125x 95 mm
Fit for 500W-2000W motor

Taishan 52V 25Ah Battery

Charger 58.8V 5A
Battery Capacity 52V 25Ah
Range 40-70 km
Cycle Life 1000 Times
Charging Time 5 hours
Weight 6.2kg
Size 386.2 × 97 × 157.4 mm
Fit for 500W-3000W motor

What's in the kit?

What's included in the individual kit?

In the individual kit, you get everything you need to DIY your bike into an e-bike.

A 1500w-2000w powerful motor wheel, 48V 35Amp FOC sinewave smart controller, LCD81F TFT color display, V12 PAS, Thumb throttle, e-Brake levers, 1T4 waterproof quick-release harness wires and a good package with foam to protect all parts be safe.

In addition we provide free sweet service accessories, installation tools and additional parts.

What's in the kit?

What's included in the individual kit?

In the individual kit, you get everything you need to DIY your bike into an e-bike.

A 1500w-2000w powerful motor wheel, 48V 35Amp FOC sinewave smart controller, LCD81F TFT color display, V12 PAS, Thumb throttle, e-Brake levers, 1T4 waterproof quick-release harness wires and a good package with foam to protect all parts be safe.

In addition we provide free sweet service accessories, installation tools and additional parts.

1. Fat Bike Wheel 80mm Double Wall Aluminum Alloy Strong Rim. Black Color

2. 1500w-2000w Brushless Direct Drive Rear Wheel, 6.8kgs weight.

3. Black Paint Spokes anti-rust 12G 2.6mm with copper Nipples.

4. Dropouts: 175-190mm. With 7speed freewheel.

5. Fit Disc Brake.

6. 50-60km/h max speed.

7. CE, ROHS certificates.

1. 48V 35Amp FOC sinewave 12mosfets Controller. It works for 36v, 48v and 52v lithium batteries.

2. FOC Sinewave Smart Controller

3. CE, ROHS certificates.

4. Best Cooling and Waterproof.

5. Easy to Install with tape tie.

1. Color Display Design.

2. Battery Power Indicator.

3. Running Speed, Average Speed, Max Speed.

4. Single Mileage, Total Mileage.

5. PAS Levers, Brake Signal, Throttle Signal.

6. Cruise Function, 6KM/H Walk Function, and so on.

V12 PAS. A 12 magnets signal pedal assist system.

Electric Brake Lever to cut off the power when you press it.

Easy installation、More sensitive 、more stable performance.

The waterproof and quick-release connectors.

Free Accessories Included

Allen Tool Set

Allen Tool Set
Crankset Remove Tool
Freewheel Remove Tool
Crankset Remove Tool
Wrench

Sweet Service Accessories

Brake sensor
Torque arm
ECMF
D12L PAS

Additional Parts

Book Manal
Cable Ties
Cable's Tube

Frequently Asked Questions

Our kit is suitable for most bicycles, but please view the below details for reference.

Firstly, a 36v 250w front motor system is installed on the front fork instead of the bicycle's front wheel. And its dropouts are 100mm. So please confirm your front fork dropouts is 100mm. Please click Dropouts and view the video of the Dropouts measurement.

Secondly, please choose the wheel size, we have 20" 26" 27.5" 28" 29" 700C wheels. If you are not sure which wheel size fits your bicycle, please click the wheel size to check how to confirm your bicycle wheel size.

At the last, please choose the battery you like. Here is a short video about the installation of the downtube battery and rear rack battery. 

Please contact us at support@kirbebike.com if you have more questions.

How Far Can I Go (Battery Range)?

36V 13Ah battery has 30-40 miles of range
36V 16Ah battery has 38-45 miles of range
36V 18Ah battery has 42-50 miles of range
48V 13Ah battery has 40-50 miles of range
48V 16Ah battery has 50-60 miles of range
48V 19.2Ah battery has 60-70 miles of range
48V 21Ah battery has 65-75 miles of range

All figures are in pure electric mode, the actual mileage will be farther if there is pedal assist.

LG cells are better in product quality and stability, so the price is more expensive.

Most of our electric bike conversion kits can reach a top speed of 25-30 Km/h, but the 1000W model can reach speeds of 45-50 Km/h. These speed limits are primarily set by the laws governing bicycles. Requirements for bicycles with a top speed of more than 25 km/h may require additional permits and are subject to different traffic regulations.

We stand by the quality of our products.

• 1-Year Global Warranty on all Kirbebike conversi on kits.

• UK: Free repairs for both the e-bike system and battery. US & Netherlands: Free battery repairs for 1 year.

• Need help? Contact support@kirbebike.com for warranty support and technical assistance.

We ship to customers worldwide.

• Free shipping on all UK orders.

• We also ship to the US, EU, Canada, Australia, Japan, and many other countries.

• International shipping rates are calculated automatically at checkout.

We deliver orders quickly with trusted global carriers.

• UK: Free delivery in 3–5 business days.

• International: Most orders arrive within 5–14 business days.

• For safety, your kit and battery may be shipped separately with full tracking.
Influencing comments

Simple, affordable, high performance, and low maintenance single speed.

Top E-Bike Review Site

Impressive value for money.

Leading Tech Magazine

A blend of value and style that doesn't scrimp on features.

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