The Honda CB250 is a strong and simple motorcycle. Many people turn it into a cafe racer because it is easy to change and fun to ride. The bike is light. The engine is reliable. The parts are cheap. This makes it perfect for people who want to build their own custom motorcycle.
A cafe racer is a type of motorcycle that looks classic and fast. It has a low handlebar, a small seat, and a sleek design. Riders love these bikes because they are stylish and simple. The Honda CB250 is one of the best choices for a cafe racer build.
History of the Honda CB250
Honda made the CB250 in the 1970s. The bike was small, but it had a strong engine. Many people used it for daily rides. Over time, builders saw that this bike could be more than just a normal ride.
The engine was simple to fix. The frame was easy to modify. The weight was light. These things made the CB250 a great choice for making a custom cafe racer. Many builders around the world started to modify this bike. Today, the CB250 is still one of the most popular bikes for custom builds.
Honda CB250 Specifications
A cafe racer needs a lightweight, strong, and reliable motorcycle. The Honda CB250 is a perfect choice. It has a simple engine, easy-to-modify frame, and classic style. Below are the key specifications.
Engine and Performance
The Honda CB250 has a small but powerful engine. It runs smooth and lasts long. Many riders say it is one of the most reliable 250cc engines.
| Specification | Details |
|---|---|
| Engine Type | 4-stroke, air-cooled |
| Cylinders | 2 (parallel twin) |
| Displacement | 249cc |
| Power Output | 27-30 HP |
| Torque | 20 Nm |
| Carburetor | Twin Keihin |
| Compression Ratio | 9.0:1 |
| Top Speed | 140-150 km/h |
| Fuel System | Carbureted |
The twin-cylinder engine gives smooth power. Many riders upgrade the exhaust and air filter for better performance.
Chassis and Dimensions
The CB250 frame is light and easy to modify. Builders cut and weld the rear subframe to fit a cafe racer seat.
| Specification | Details |
|---|---|
| Frame Type | Steel double-cradle |
| Wheelbase | 1,370 mm |
| Seat Height | 780 mm |
| Ground Clearance | 165 mm |
| Weight | 140-150 kg |
A short wheelbase makes the bike easy to handle. A low seat height gives a comfortable riding position.
Brakes and Suspension
A cafe racer must have strong brakes and good suspension. Many builders upgrade these parts for better performance.
| Specification | Front | Rear |
|---|---|---|
| Brakes | Single disc or drum | Drum |
| Suspension | Telescopic forks | Twin shock absorbers |
Some CB250 models have drum brakes, which are weak. Many builders upgrade to disc brakes for better stopping power.
Fuel and Mileage
The CB250 has a small fuel tank. This makes it light but limits long rides.
| Specification | Details |
|---|---|
| Fuel Tank Capacity | 12-14 liters |
| Fuel Consumption | 25-30 km/l |
A cafe racer does not need a big tank. Many builders use a CB350 or CB360 fuel tank for a better look.
What is a Cafe Racer?
A cafe racer is a motorcycle that is made to be fast and stylish. These bikes started in the 1950s. Young riders in London wanted bikes that could go fast on city roads. They changed normal motorcycles to make them look like race bikes.
A cafe racer has some key features:
✅ Low handlebars – Riders lean forward to make the bike feel fast.
✅ Small, single seat – No extra weight, just a simple, sleek look.
✅ Light frame – The bike moves quickly without heavy parts.
✅ Custom exhaust – Deep, loud sound for a sporty feel.
✅ Classic round headlight – Retro style that looks sharp.
The CB250 fits this style perfectly. The frame is strong. The engine can handle upgrades. The bike is also small, which makes it easy to control in traffic. This is why many people turn the Honda CB250 into a cafe racer.
Common Honda CB250 Cafe Racer Modifications
A cafe racer must be light, fast, and stylish. The Honda CB250 is a good base, but some changes make it better. Below are the most important modifications.
Frame Modifications
The CB250 frame is strong but too long for a cafe racer. Many builders cut and shorten the rear subframe. This makes the bike look sharp and clean.
✔ Subframe cutting – Removes the extra metal at the back.
✔ Seat hoop installation – A curved metal loop gives a finished look.
✔ Battery relocation – Hides the battery under the seat for a clean look.
✔ Minimal wiring – Removes unnecessary cables for a simple design.
Engine Upgrades
The CB250 engine is reliable. A few small changes improve speed and sound.
✔ Exhaust system – Shorter pipes give a deep, strong sound.
✔ Air filters – Open pod filters let more air into the engine.
✔ Carburetor tuning – More fuel means better speed.
✔ Lighter flywheel – Faster throttle response.
Suspension and Handling
Better suspension makes the ride smoother and more stable.
✔ Rear shocks – Upgraded shocks improve handling.
✔ Front fork rebuild – Stiffer springs stop the bike from dipping when braking.
✔ Lighter wheels – Less weight means better acceleration.
Braking System
Many CB250 models have drum brakes. These are weak. Upgrading to disc brakes is safer.
✔ Front disc conversion – Stronger stopping power.
✔ Braided brake lines – Better brake feel and response.
✔ High-performance pads – Improve braking distance.
Aesthetic Changes
A cafe racer must look classic and clean.
✔ Clip-on handlebars – Lowers the riding position for a sporty feel.
✔ Custom seat – A single-seat design makes the bike look sharp.
✔ LED lighting – Modern headlight and taillight improve visibility.
✔ Slim fuel tank – Many builders use a CB350 or CB360 tank.
These modifications turn a CB250 into a true cafe racer. Each change improves the bike’s performance, handling, and style.
Notable Honda CB250 Cafe Racer Builds
The Honda CB250 is a great base for a cafe racer. Many builders have used this bike to make unique and stylish motorcycles. Some builds focus on looks. Some focus on speed. Others mix both. Below are some of the best CB250 cafe racer projects that have gained attention.
Blackbean Motorcycles’ CB250 Cafe Racer
A German team built this bike. They took a 1976 Honda CB250 and gave it a full upgrade. The engine was cleaned and restored. The old wiring was removed. A simple electrical system was added. The seat was changed to a slim, one-person style. The frame was made shorter. A custom exhaust system was installed for a deep, loud sound. The bike looked modern but kept the classic cafe racer feel.
Hookie Co.’s “Nifty Two-Fifty”
Hookie Co. made a Honda CB250 cafe racer with a clean and simple design. The bike had a small fuel tank. The seat was custom-made with leather. The handlebars were clip-ons, which gave the bike a sporty look. The frame was cleaned and painted black. This bike had a mix of classic and modern styles. The build showed that a CB250 can look fresh and elegant.
Rogue Motorcycles’ CB250 Nighthawk
The team at Rogue Motorcycles turned a CB250 Nighthawk into a sleek cafe racer. The stock fuel tank was replaced with a slim and sharp design. The seat was handmade to fit the new frame. The suspension was improved for better performance. The bike got new tires that gave it a more aggressive look. The team also changed the exhaust and air filters to improve speed and sound.
Pros and Cons of Using a Honda CB250 for a Cafe Racer
The Honda CB250 is a great choice for a cafe racer. But no bike is perfect. Below are the pros and cons of using a CB250 for a cafe racer build.
Pros
✔ Lightweight – Easy to handle and ride.
✔ Reliable engine – Runs for years with little maintenance.
✔ Cheap to buy – A used CB250 costs less than bigger bikes.
✔ Easy to modify – Frame, engine, and brakes can be upgraded.
✔ Good aftermarket support – Many shops sell parts.
Cons
✘ Not very fast – The 250cc engine is not as powerful as bigger bikes.
✘ Old braking system – Many models have weak drum brakes.
✘ Parts can be hard to find – Some original parts are rare.
✘ Small fuel tank – Needs refueling often.
How It Compares to Other Bikes
| Feature | CB250 | CB350 | CB500 |
|---|---|---|---|
| Weight | Lightest | Medium | Heavier |
| Power | 27 HP | 36 HP | 50 HP |
| Top Speed | 140 km/h | 160 km/h | 180 km/h |
| Braking | Drum/Disc | Disc | Disc |
| Fuel Tank | Small | Medium | Large |
The CB250 is a great choice for beginners. A CB350 or CB500 may be better for riders who want more power.
Step-by-Step Cafe Racer Build Timeline
Building a cafe racer takes time. Below is a step-by-step timeline to complete a Honda CB250 cafe racer project.
Week 1-2: Buy and Prepare
✔ Find a good CB250 donor bike.
✔ Check engine, frame, and brakes.
✔ Remove old seat, fuel tank, and handlebars.
Week 3-4: Frame and Suspension
✔ Cut and shorten rear subframe.
✔ Install new rear shocks.
✔ Clean and paint the frame.
Week 5-6: Engine and Exhaust
✔ Install custom exhaust system.
✔ Upgrade air filters and carburetor.
✔ Test the engine and tune carburetor.
Week 7-8: Electrical and Controls
✔ Install clip-on handlebars and rear-set footpegs.
✔ Rewire the headlight, taillight, and turn signals.
✔ Hide the battery under the seat.
Final Week: Test and Ride
✔ Check brakes, tires, and chain tension.
✔ Test ride and adjust carburetor.
✔ Final paint and detailing.
A full build takes 2 to 3 months. Some builders finish faster. Some take longer. Good planning saves time and money.
Steps to Building a Honda CB250 Cafe Racer
A cafe racer is not just about looks. It must be light, fast, and easy to handle. The Honda CB250 is a great base, but some changes are needed. Below are the main steps to build a custom CB250 cafe racer.
1. Selecting the Donor Bike
A good donor bike is important. The engine should be in good condition. The frame must be strong. A used CB250 can be cheap, but some parts may need fixing. Common CB250 models used for cafe racers include:
- Honda CB250N (also called the Super Dream)
- Honda CB250 K4 (classic 1970s design)
- Honda CB250 Nighthawk (popular in the 1990s)
2. Design Planning
A cafe racer must have a clean, minimal design. The fuel tank, seat, and handlebars decide how the bike will look. The best design is simple and lightweight.
Most builders focus on:
✔ Slim fuel tank – Keeps the bike light and stylish
✔ Single-seat design – No extra weight, better speed
✔ Clip-on handlebars – Sporty, aggressive riding position
✔ Low-profile headlight – Classic round shape for a vintage look
✔ Custom exhaust – Shorter pipes for a deep, strong sound
3. Mechanical Modifications
The CB250 engine is reliable. It does not need major changes. Some upgrades make it faster and more fun to ride.
- Exhaust system – Short pipes give a better sound and performance
- Air filters – Open pod filters let more air into the engine
- Carburetor tuning – More fuel means better speed
- Lighter wheels – Less weight means faster movement
- Brake upgrades – Better stopping power for safety
4. Suspension and Frame Modifications
The frame must be adjusted for a cafe racer look. Many builders cut and shorten the rear subframe. This makes the bike look sharp and clean.
- Rear suspension – New shock absorbers for smooth riding
- Front forks – Shortened or replaced for better handling
- Clip-on handlebars – Lower than stock bars for a race feel
- Rear-set foot pegs – Move feet backward for a sportier position
5. Aesthetic Changes
The style makes a cafe racer special. The CB250 has a classic look, but small changes make it unique.
- Custom seat – Handmade leather seat for comfort and style
- Minimal wiring – Hides messy wires for a clean look
- LED lighting – Modern headlights and tail lights
- Custom paint job – Black, silver, or matte colors for a vintage feel
6. Final Assembly and Testing
The last step is putting everything together. The engine must run smoothly. The brakes, tires, and lights must work properly. A test ride checks handling, speed, and balance.
Challenges and Considerations
Building a Honda CB250 Cafe Racer takes time and effort. Some steps are easy. Some steps need skill. Many problems can happen during a project. A smart builder plans ahead. Below are common challenges and ways to solve them.
Sourcing Parts
The CB250 is an old bike. Some original parts are hard to find. Custom parts can be expensive. A good plan saves money and time.
- Online stores – Websites like eBay and specialized motorcycle shops sell parts.
- Local junkyards – Some old bikes have usable parts.
- Custom fabrication – Some parts can be made by hand.
- Motorcycle forums – Riders sell and trade parts online.
Common parts needed:
✔ Fuel tank – Many builders use a CB350 or CB360 tank for a better look.
✔ Exhaust system – Short pipes give a deeper sound.
✔ Seat – A custom seat fits the cafe racer style.
✔ Clip-on handlebars – Lower bars change the riding position.
✔ Rear-set footpegs – Moves foot position for better control.
Technical Expertise
Not all projects need a mechanic. Some tasks need special tools and knowledge.
- Wiring – Newer electrical systems can be complex.
- Engine tuning – More power needs proper adjustment.
- Welding – Cutting the frame requires welding skills.
- Brake upgrades – Changing brake systems improves safety.
A beginner can do basic tasks. Oil changes, seat swaps, and painting are simple. More difficult work needs a professional or detailed research.
Budgeting
Custom projects cost money. A budget prevents overspending. Some parts are cheap. Some parts are expensive. Smart shopping keeps costs low.
Average costs:
| Part | Estimated Cost |
|---|---|
| Used CB250 | $800 – $2,000 |
| Clip-on bars | $50 – $150 |
| Exhaust system | $100 – $400 |
| Rear shocks | $100 – $300 |
| LED lights | $50 – $150 |
| New tires | $100 – $300 |
| Custom seat | $100 – $250 |
| Painting | $100 – $500 |
A project can be cheap or expensive. Some builders spend under $1,500. Some spend over $5,000. A budget helps control spending.
Legal and Safety Aspects
A custom cafe racer must follow laws. A bike that is not legal can be dangerous or removed from the road.
Regulatory Compliance
Every country has rules for custom motorcycles. Some places allow big changes. Some have strict laws.
- Exhaust noise limits – Some areas require quiet exhausts.
- Lighting laws – Brake lights and turn signals must be visible.
- Frame changes – Cutting a frame may need approval.
- License and registration – Custom bikes must have proper documents.
A builder should check local laws before making big changes.
Safety Inspections
A custom bike must be safe. A test ride is not enough. A full check is important.
Key safety checks:
✔ Brakes – Must stop quickly and smoothly.
✔ Lights – Headlight, taillight, and turn signals must work.
✔ Tires – No cracks, proper air pressure.
✔ Suspension – No leaks or loose parts.
✔ Steering – Handlebars must move freely.
Some shops offer professional inspections. A safety check helps avoid accidents.
Community and Resources
A Honda CB250 Cafe Racer project is easier with support. Many people share advice, sell parts, and show their builds online. A strong community helps builders learn, fix problems, and get ideas. Below are the best places to find help.
Online Forums and Groups
Many riders and builders share their work in motorcycle forums. They post pictures, ask questions, and trade parts. Some forums focus on Honda CB models. Others cover all cafe racer projects.
- Honda Twins Forum – Discussions about CB250 engines, wiring, and upgrades.
- Do The Ton – A forum for cafe racer builders. Many users share step-by-step guides.
- Reddit r/motorcycles – General motorcycle advice, including custom builds.
- Facebook Cafe Racer Groups – Many groups help with parts, tips, and build inspiration.
Workshops and Meetups
Some builders prefer working alone. Others learn faster in a group. Workshops and meetups connect people who love custom motorcycles. Some events offer hands-on training. Others help builders show their finished bikes.
- Bike Shed Show (UK) – A big event with custom bikes, tools, and expert builders.
- Handbuilt Motorcycle Show (USA) – A top event for handmade cafe racers.
- Local motorcycle clubs – Some clubs hold custom build meetups.
A workshop teaches new skills. A meetup helps builders find inspiration. Both are useful.
Educational Materials
Building a cafe racer takes time. Learning the right way saves mistakes. Many books, videos, and manuals help CB250 owners understand their bikes.
- Honda CB250 Service Manual – Explains engine repairs, electrical systems, and maintenance.
- YouTube Channels – Many builders post step-by-step modification videos.
- Custom Motorcycle Books – Books on fabrication, painting, and performance upgrades.
Learning from experts and experienced builders improves a project. A good resource saves time and money.
Conclusion
The Honda CB250 is a great bike for a cafe racer build. The frame is light. The engine is strong. The bike is easy to modify. Many people have turned this classic Honda into a stylish, fast, and reliable custom ride.
A project takes planning, money, and effort. A good donor bike makes the process easier. The right parts and upgrades improve performance. Safety and legal rules must be followed.
The CB250 cafe racer community is large. Many builders share knowledge. Resources like forums, books, and videos make learning simple.
A finished CB250 Cafe Racer is worth the work. It looks great. It rides smooth. It gives a sense of pride. Many builders say the process is just as fun as the final result.
FAQs
How much does it cost to build a Honda CB250 Cafe Racer?
The cost of building a Honda CB250 Cafe Racer depends on parts and modifications. A basic build with minimal changes costs $1,500 to $2,500. A high-end build with custom parts, upgraded brakes, and a new paint job can cost $4,000 to $5,000 or more. The biggest expenses are the bike purchase, exhaust system, suspension, and painting.
How fast can a Honda CB250 Cafe Racer go?
A stock Honda CB250 has a top speed of 140-150 km/h. With performance upgrades like a free-flow exhaust, carburetor tuning, and air filter improvements, it can go slightly faster. Cafe racers are built for style and handling, not top speed, so most builders focus on improving acceleration and ride comfort.
Is the Honda CB250 reliable for daily riding?
Yes, the Honda CB250 is a reliable motorcycle for daily riding. The air-cooled engine is simple and easy to maintain. Regular oil changes, chain adjustments, and carburetor cleaning keep it running smoothly. Many riders use it for city commuting because it is fuel-efficient and lightweight.
What is the fuel consumption of a Honda CB250 Cafe Racer?
The Honda CB250 has a fuel consumption of 25-30 km/l. The exact mileage depends on the riding style, modifications, and maintenance. Performance upgrades like high-flow air filters and exhaust systems can reduce fuel efficiency slightly.
What are the key modifications needed for a CB250 Cafe Racer?
The most important modifications for a Honda CB250 Cafe Racer include:
Clip-on handlebars – Lower and sportier riding position
Custom seat – Slim, single-seat design
Rear-set footpegs – Improves rider control
Upgraded suspension – Better handling on turns
Short exhaust system – Deeper sound and better performance
Minimal wiring – Cleaner, classic look
These changes make the CB250 look and feel like a true cafe racer.
