BMW R90S Restoration - Professional restoration to the highest standard
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The BMW R90S is one of the most significant motorcycles in BMW history. With its distinctive bikini fairing, sporty character, and pioneering technology, it set new standards in the 1970s and became one of the most sought-after BMW motorcycle legends of all time.
A professional BMW R90S restoration means far more than just replacing wear parts or applying a new coat of paint. The goal is to preserve the fascination and character of this extraordinary motorcycle for future generations while ensuring technical perfection at the highest level.
BMW R90S Restoration with Attention to Detail
At Sport-Evolution, every BMW R90S is completely disassembled and analyzed down to the very last screw. All components are cleaned, inspected, measured, and, depending on their condition, refurbished or replaced. Thanks to our many years of experience with classic BMW twin-valve models, we know the unique characteristics and weak points of these motorcycles inside out.
The engine, gearbox, chassis, braking system, electrics, and attachments are overhauled to the highest quality standards. Our goal is not only to restore the original condition but to achieve the technical quality of a brand-new vehicle.
Engine Building and Technology
The heart of every BMW R90S is its legendary boxer engine. As part of the BMW R90S restoration, the engine is completely disassembled and rebuilt. All components are inspected and overhauled. Wear parts are systematically replaced.
The work includes, among other things:
- Completely disassembling and cleaning the engine
- Measuring and inspecting the crank drive
- Completely overhauling the cylinder heads
- Unleaded fuel conversion of the cylinder heads
- Replacing valve guides, valves, and seat rings
- Inspecting and overhauling the cylinders
- Replacing all bearings, seals, and wear parts
- Completely overhauling and tuning the carburetors
The gearbox is also completely disassembled, measured, and rebuilt. All bearings, seals, and wear components are replaced to ensure reliable operation for many years to come.
Chassis and Driving Dynamics
A high-quality BMW motorcycle restoration does not end with the engine. The chassis and braking system play a crucial role in safety and riding pleasure.
As part of the restoration, the forks, shock absorbers, swingarm bearings, steering head bearings, and wheel bearings are checked and replaced if necessary. Upon request, we can integrate subtle technical optimizations that improve handling without altering the classic character of the BMW R90S.
True-to-Original Look
The distinctive paintwork makes the BMW R90S a true icon. That is why special emphasis is placed on a true-to-original restoration.
The frame as well as all chassis and metal parts are recoated. The paintwork is applied with the highest precision in the original BMW R90S design. Trim pieces, emblems, and attachments are refurbished or replaced with high-quality original parts.
The result is a BMW R90S that visually matches its historical predecessor while meeting the highest technical standards.
Why Have Your BMW R90S Restored at Sport-Evolution?
The restoration of classic BMW motorcycles requires extensive specialist knowledge, special tools, and decades of experience. Sport-Evolution is one of the leading specialists for BMW twin-valve models in Germany.
Our in-house engine department, chassis department, welding shop, and modern workshop equipment enable us to carry out almost all work in-house. This allows us to ensure consistently high quality throughout the entire restoration process.
Overview of the Most Important Work
- Complete BMW R90S restoration from the ground up
- Complete disassembly of the vehicle
- Engine completely rebuilt
- Cylinder head overhaul including unleaded conversion
- Gearbox completely rebuilt
- Carburetors overhauled and tuned
- Chassis completely overhauled
- Electrics checked and repaired
- All chassis and metal parts powder-coated
- Paintwork in the original BMW R90S design
- Assembly with new bearings, seals, and wear parts
- Final inspection and test ride
BMW Classic Motorcycle Restoration by Specialists
Whether it is a BMW R90S, BMW R100RS, BMW R100S, BMW R80, or other BMW twin-valve models – we restore classic BMW motorcycles to the highest quality standards and with a great passion for every detail.
If you would like to have your BMW R90S restored, we would be happy to advise you personally and work with you to create a customized restoration concept for your motorcycle.
