A bolt-on engine kit for bicycles that converts most 26" and 28" frames into petrol-powered rides, capable of raising cruising speed and easing hill climbs. Riders get quicker commutes and less effort on long routes, with clear oil-mix guidance for maintenance. Is a petrol conversion practical and legal for everyday use in your area, and does the kit include everything needed for installation? The H-YEEU Bicycle Engine Motor Kit
⚡ At a Glance
- • Performance: Converts a standard bicycle into a motorised ride for faster travel
- • Best for: DIY modifiers and commuters wanting petrol assistance on 26" or 28" bikes
- • Not ideal for: Riders in jurisdictions where powered bicycle conversions are restricted
Full 100cc two-stroke bicycle engine kit supplied with essential control and exhaust assemblies. Kit designed to fit most 26" and 28" mountain, road and cruiser frames.
Faster commutes and easier hills - thanks to a 100cc 2-stroke engine
A 100cc two-stroke petrol engine delivers a higher power-to-weight ratio than most electric hub conversions at similar package sizes, and the carburettor plus CDI assembly handle fuel delivery and ignition timing. The design supports sustained speeds up to around 60km/h, suitable for higher-speed assisted riding.
noticeably reduced pedalling effort on hills and shorter journey times for commuting or leisure rides. Practical for riders who need regular speed boosts on mixed terrain.
Economical running - thanks to low fuel consumption
Fuel consumption is listed at roughly 3L per 100km, and the kit requires an oil-fuel mix for lubrication, using 16:1 for the initial 500 miles then 20:1 thereafter, with 18:1 recommended in hot weather.
Low fuel use keeps running costs modest compared with larger engines, while the clear oil-mix guidance helps protect the engine during break-in and in warmer conditions.
Straightforward installation - with a full accessory kit and wide fitment
The set includes an exhaust muffler, CDI assembly, carburettor assembly, clutch assembly, spark plug, exhaust pipe and other necessary fittings to integrate with 26" and 28" bicycle frames. Parts are supplied to allow mounting and basic tuning without sourcing extra items.
A complete kit reduces the need for additional purchases and allows mechanically confident owners to perform the conversion at home, making the upgrade practical for many cyclists.
✨ The 4 Key Reasons for H-YEEU Bicycle Engine Motor Kit
- Complete accessory kit - Ensures no extra parts are required for conversion
- Low fuel consumption - Around 3L per 100km keeps running costs down
- Clear oil-mix guidance - Break-in and hot-weather ratios protect engine longevity
- Wide fitment compatibility - Designed to mount on most 26" and 28" frames
📋 Technical Details at a Glance
- Category: Bicycle engine kit
- Engine type: 100cc, 2-stroke petrol
- Maximum speed: Up to 60 km/h (manufacturer guidance)
- Maximum load-bearing weight: 200 kg
- Fuel consumption: Approximately 3L/100km
❓ Frequently Asked Questions
Q: Will this kit fit my 26" or 28" bicycle frame?
A: Yes, the kit is designed to fit most 26" and 28" bicycles, including mountain, road and cruiser frames, though mounting requires basic frame clearance and mechanical adjustment.
Q: What fuel and oil mix does the engine require?
A: Use a petrol and oil mixture at 16:1 for the first 500 miles, then switch to 20:1 for regular use, with 18:1 advised in hot weather conditions.
Q: Which parts are included in the kit?
A: The full set includes an exhaust muffler, CDI assembly, carburettor assembly, clutch assembly, spark plug, exhaust pipe and other necessary fittings to complete installation.
🏆 Our Verdict
Suitable for mechanically minded riders and commuters who want a petrol-assisted bicycle for longer routes and hillier commutes. The full 100cc two-stroke kit, supplied with control and exhaust assemblies and clear oil-mix guidance, makes it a practical conversion with modest running costs. While an initial conversion requires time and basic skills, the comprehensive kit and economical fuel use deliver solid long-term value for the right user.
