Schmitt „Sportfreund“ Racing Cylinder 50ccm (38mm) – modern performance in original look

With the Schmitt „Sportfreund“ aluminum cylinder, you get a high-torque 50ccm 4-port cylinder for your Simson moped/mokick – technically modern, but visually close to the original. The Schmitt cylinder, manufactured in Europe, relies on a nickel-carbide-silicon coated cylinder liner for high stability and smooth running properties.

Due to the larger surface area, there is more area for heat dissipation – this improves cooling in everyday use as well as during sportier driving. Additionally, the construction is designed so that you can further modify the cylinder if necessary, without the need for cumbersome gluing or welding. In short: this 50ccm setup contains state-of-the-art port geometry, cleverly packaged in a 50ccm original look – ideal for your Simson S51 and, depending on the model, also suitable for other Simson vehicles.

Features & Advantages

• 50ccm aluminum cylinder of European manufacture
• 4-port for powerful acceleration and high-torque characteristics
• Nickel-carbide-silicon coated cylinder liner for high wear resistance
• Improved cooling through larger surface area/more cooling surface
• Tuning-friendly construction: further modification possible without gluing/welding
• Modern port geometry in 50ccm original look

Technical Specifications

• Displacement: 50 ccm
• Bore: 38 mm (nominal diameter)
• Stroke: 44 mm

Note: Designed for 44 mm stroke and suitable for Simson moped/mokick models such as Simson S51, KR51/2, and SR50 (see vehicle list).

Compatibility (Vehicles)

• Simson S 51 B2-4 50 4-speed (Year 1980-1989)
• Simson S 53 B 50 4-speed (Year 1990-1994)
• Simson SR 50 50 4-speed Bunny (Year 1987-1990)
• Simson Schwalbe KR 51/2E 50 4-speed foot electronics (Year 1979-1986)

Why Schmitt „Sportfreund“?

The Schmitt „Sportfreund“ combines proven 50ccm optics with modern technology: European manufacture, stable coating, and a well-thought-out construction with reserves for further modification – perfect if you want to turn your Simson S51 into a noticeably stronger but balanced setup.