KirbEbike conversion kits let you upgrade your bike for as little as £357.85, offering power, reliability, and easy installation in under 20 minutes. These kits fit 99% of bike frames, preserve your bike's geometry, and come with a 1-year warranty. Whether you’re looking for longer rides, steep climbs, or rugged trail performance, there’s a kit for you.
Key Features:
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Motor Options: From 250 W (road-legal) to 4000 W (extreme performance).
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Battery Choices: Ranges from 36 V to 72 V for rides up to 60 km or 4 hours.
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Cost-Effective: Save money compared to buying a new e-MTB.
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Easy Setup: Install with basic tools in 20 minutes.
Who It's For:
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Trail Explorers: Extended range with the 60 V 2500–3000 W kit.
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Endurance Riders: Steady power with the 52 V 2000 W kit.
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Technical Riders: Maximum torque with the 72 V 4000 W kit.
Trail Conversion Kit Advantages
KirbEbike's conversion kits are designed to turn regular mountain bikes into trail-ready machines with impressive performance.
Motor Power Output
Leading the range is the 72 V 4000 W Extreme Performance Kit, offering exceptional power for demanding trails. The 60 V 2500–3000 W MTX Rim Kit (£1,218) strikes a balance between torque and agility, making it ideal for mixed trail conditions. Battery capacity then determines how far and how long you can ride.
Battery Life and Range
The 36 V 13 Ah battery supports rides of 35–60 km per charge, while the 48 V 16 Ah battery achieves similar distances on varied terrain]. For more intense rides, the 72 V system delivers around four hours of trail use. Riders have reported covering 20-mile weekend trails and reaching flat-ground speeds of up to 56 km/h with the 60 V kit.
Cost and Resource Savings
Converting your bike is far more affordable than purchasing a new e-MTB. Starting at £357.85, the 52 V 2000 W MTX Rim Kit offers professional-grade performance at a fraction of the price. It fits 99% of bike frames, can be installed in under 20 minutes, and comes with a one-year warranty. Users frequently highlight its straightforward setup and impressive ability to handle steep inclines.
Selecting Your Conversion Kit
Motor Types and Power Levels
When choosing a motor, think about the type of trails you'll be riding. KirbEbike offers kits ranging from 250 W to 4000 W, ensuring there's an option for every need. For road-legal use, the 36 V 250 W model (£307.99) is ideal. If you're tackling steeper climbs, the 48 V 1000 W kit (£379.00) is a solid choice. For those seeking maximum trail power, the 72 V 4000 W kit (£670.00) delivers outstanding performance.
Battery Selection Guide
The battery capacity determines how far you can go. KirbEbike provides options from 36 V 13 Ah to 72 V 20 Ah.
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36 V 13 Ah: Suitable for basic trails.
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48 V 16 Ah: Great for mixed terrain.
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72 V 20 Ah: Perfect for longer rides.
One rider shared their experience, completing a 35 km hilly route with the 1000 W kit while using just 35–40% of the battery. This highlights the importance of choosing the right battery for your terrain.
Bike Fit and Setup
KirbEbike kits are compatible with wheels sized 26", 27.5", and 29", and work with both V-brakes and disc brakes. Before installation, check your bike's dropout width, wheel diameter, and frame mount points to ensure proper fit. Thanks to the modular design, installation is straightforward and takes around 20 minutes with basic tools and mechanical skills. Each kit comes with detailed instructions and access to online support videos.
Once you've gathered your tools, follow the step-by-step guide to get started.
Power Meets Precision: 72V 4000W High-Performance Mountain Bike Conversion Kit
For riders seeking maximum trail-blazing torque and high-speed thrill, the KirbEbike 72V 4000W High Power Ebike Kit delivers unmatched off-road performance. Built for rugged terrain and steep climbs, this kit transforms your standard MTB into a trail-ready electric beast.
Top Features:
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Massive 4000W Hub Motor for superior off-road power.
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72V Battery Compatibility delivers up to 4 hours of trail use.
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High Torque Output handles steep, technical terrain.
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Aluminum Alloy Components offer durability on rough trails.
Trail Benefits:
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Extreme Performance: Ideal for aggressive mountain biking and technical climbs.
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Fast Ride Capability: Achieve speeds over 55 km/h on flat ground.
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Extended Trail Sessions: Ride harder and longer without overheating.
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All-Terrain Ready: Tackles hills, roots, rocks, and mud with ease.
Why Choose KirbEbike:
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Fast DIY Setup: Install in under 20 minutes with basic tools.
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Bike Compatibility: Fits 99% of MTB frames (26", 27.5", 29").
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After-Sales Support: 1-year warranty, spare parts, and helpful tutorials.
Specifications:
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Specification
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Detail
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Motor Power
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4000W
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Battery Voltage
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72V (compatible)
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Max Speed
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56 km/h+ (on flat terrain)
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Wheel Size Options
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26", 27.5", 29"
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Install Time
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Approx. 20 minutes
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Warranty
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1 Year
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Installation Instructions
Tools You'll Need
Set up a clean, well-lit workspace and gather these tools before starting:
- Adjustable spanner
- Allen key set (2–8 mm)
- Phillips head screwdriver
- Wire cutters/strippers
- Drill and tap set (for underslung battery installation)
- Torque wrench
- Cable ties
- Electrical tape
Motor and Battery Installation
1. Motor Installation
Start by removing the rear wheel. Place the motor hub into the dropouts and tighten the axle nuts to the specified torque. Add torque arms to stop the axle from spinning (Scott McKirdy suggests using 10 mm spanners as a DIY solution)[3].
2. Battery Mounting
Pick a mounting location: top tube, down tube, or underslung. For underslung mounting, you'll need to drill and tap the frame for the bracket. Make sure the frame is strong enough before drilling.
3. Controller and Wiring
Attach the controller near the battery. Use cable ties or electrical tape to secure the wiring along the frame. Match the phase wires by their colours when connecting.
System Check and Initial Setup
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Position the speed sensor correctly to ensure accurate readings.
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Power up the system and check the following:
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- The motor activates when pedalling or using the throttle.
- The battery display shows the charge level.
- The handlebar display functions properly.
- Brake cut-offs disengage the motor as expected.
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Take a test ride using the lowest assist setting. During the ride, confirm all connections are secure and wiring is neatly arranged.
Once installed, you'll want to focus on regular maintenance to keep everything running smoothly.
Maintenance and Problem Solving
Keeping your conversion kit in top shape requires regular maintenance and quick action when issues arise. Here's how to handle common problems, maintain performance, and access support when needed.
Fix Common Problems
One common issue is speed sensor misalignment. For instance, Christy Lynch noted on a 2021 Vitus Dee that "the speed sensor needed careful fitting." To avoid this, make sure the sensor and magnet are aligned correctly.
Tackling these small fixes ensures your conversion kit stays reliable with minimal effort.
Routine Maintenance
Simple, regular checks can help you avoid breakdowns and keep your kit running smoothly:
- Clean the battery terminals after each ride.
- Inspect wiring for wear or damage.
- Listen for any unusual motor noises.
KirbEbike Customer Support
KirbEbike offers solid support and warranty options to keep you covered:
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1-year warranty with free replacements for manufacturing faults.
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Affordable replacement parts available after the warranty ends.
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7-day return policy for unused items.
Key Takeaways
Transforming your mountain bike conversion kit with a KirbEbike trail-ready kit brings a range of benefits for trail enthusiasts. The installation is quick and easy, typically taking about 20 minutes to complete. Riders frequently highlight the kits' quiet operation, dependable power, and impressive battery life, even on tough trails.
KirbEbike kits offer powerful mid-drive performance, are compatible with 99% of bike frames, and include excellent after-sales support.
How to Get Started
Thinking of upgrading your bike? It’s easier than you might think.
Head to kirbebike.com, choose the kit that suits your needs, and check out the video tutorials and step-by-step guides for installation. Plus, with a 1-year warranty and responsive customer support, you’ll have everything you need for a hassle-free upgrade.
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