Through the decades of experience in cylinder construction, DR Zylinderkits offers as 50cc sports and 70cc sports, which convince with regard to processing and quality on the whole line. The gray cast iron cylinders are TOP processed, the material (Minachrom-gray cast iron) is also very high quality. Thanks to optimized control angles and improved combustion chamber geometry, considerable power increases at moderate speeds are the strength of all DR's! The price / performance ratio is hardly to beat, the DR is a perfect companion, if the scooter is used in everyday life. In combination with a sport exhaust system and larger carburetor you have a very powerful yet still everyday sports cylinder. Can also be driven with original carburetor, but the spraying should always be properl.