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We are so excited to share this project with the world. This bike has become so much more than a motorcycle. To see this 2021 BMW R18 go from an idea to a sketch, to a completed design has been amazing. Every part for this bike was discussed, designed, re-designed, 3D printed, test fitted, and updated once more. This project has been dubbed California Special R18 or CSR18 for short. This project has pushed the entire team at San Jose BMW Motorcycles LAB to the next level. We have been building custom BMW race bikes and production performance parts since the early 70’s. Continuously evolving our skills and techniques to match the latest in the available technology. CSR18 marks a milestone for the San Jose BMW team. We used the latest in 3D scanning technology to make a digital copy of the bike through a process call reverse engineering. Once we had the bike captured digitally, we could now design custom parts and modify the bike to 0.002mm. The possibilities and opportunities have become endless. Enjoy

Please vote for the California Classic R18 via the link below. We are pleased to have been included in this national-caliber custom motorcycle competition. At San Jose Motosport, home of San Jose BMW we have 45 years of motorcycle customization under our belt and look forward to once again being able to share one of these custom bikes with the world. We are going up against stiff national competition so please vote at your earliest convenience! We would be honored to see our West Coast California Special R18 move on to the International Competition in Berlin, Germany. This is only made possible with your vote. Voting ends on July 13th so, please get the word out.



The concept of CSR18 was to take a stock BMW R18 and make the bike visually lighter with a mix of vintage and contemporary while also paying tribute to the golden state.

The Color scheme is a mix of matt and gloss black, with highlights of brass & white.  The bike will be given a more aggressive design while still maintaining proper design proportions with increased functionality.

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Front suspension – Hyperpro Fork spring kit with custom valving

Rear shock – Hyperpro rear shock with custom valving

Brakes – stock

Custom front fender.

Custom rear fender with numberplate holder.

Custom made Brass California Seals badges.


Spoked Forged Wheels by Kineo

Front 3,5×21 130/70 R21 Metzeller 888

Rear 6×18 210/40 R18 Metzeller 888

Matt black rim

Gold spoke nipples

Gloss black spokes

Gloss black hubs


Handlebar switches replaced to custom made with function symbols laser engraving.

Special LIN BUS adapters to decode analog signals from buttons to the motorcycle factory network.



Custom airbox with zero flow intake filters.

Custom intake air lines

Front cover with integrated oil cooler.

CNC machined valve covers with brass accents. Integrated highway pegs in valve covers.



Bobber style seat with under seat compartment for relocated motorcycle control units.

Seat upholstery made from original horse leather BMW Motorrad Boxer Rider Jacket.


Some of control units will be relocated at the top of the engine instead removed airbox.


Gas tank: Custom cap and frame cover brass casted.


Todd’s Cycle clamp black mirrors


CNC machined custom pegs, hill and tow gear levers, brake lever.

Brass casted reverse switch.

Grips upholstery from horse leather original BMW Motorrad Boxer Rider Jacket.


This is a very short description of our project. More details and other unique features will be posted later!


Custom parts from this project with simplified design will be available for pre-order very soon. Worldwide shipping available.


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