Schmitt box section swing arm made of aluminum (CNC) – more rigidity & precise handling for your Simson

This CNC-milled box section swing arm from Schmitt is made of high-quality aluminum and is made for everyone who wants to get a noticeably more stable and controlled driving feel out of their Simson. Due to the higher rigidity, the driving behavior improves significantly – perfect if you value a precise line, clean steering, and controlled power transmission.

Especially with powerful tuning engines, the box section swing arm plays to its advantages: it is ideally suited for the absorption and transmission of higher forces and remains reliable and durable. Additionally, it is designed so that you can mount both drum brake and disc brake kits.

Advantages & Features

• CNC-milled box section swing arm made of high-quality aluminum
• Higher rigidity for improved driving behavior and more precise control
• Ideal for tuning engines: optimized for power absorption and transmission
• Compatible with drum and disc brake kits
• Suitable for all swing arm bushings with original dimensions
• High processing quality for maximum reliability and durability
• Including CNC-manufactured chain tensioner for exact chain tension

Technical Details

• Material: Aluminum
• Manufacturing: CNC-milled
• Brake compatibility: Drum brake & disc brake (kits)
• Bushings: suitable for swing arm bushings in original dimensions
• Scope of delivery: Box section swing arm + CNC chain tensioner

Compatibility (Vehicles)

Suitable for Simson models such as S50, S51, S70, S53 and S83 (incl. Enduro variants). From the vehicle list, the following variants are covered, among others:

• Simson S 70 EII 70 4-speed (1985–1989)
• Simson S 50 N 50 3-speed (1975–1980)
• Simson S 53 B 50 4-speed (1990–1994)
• Simson S 50 B 50 3-speed (1975–1976)
• Simson S 51 B2-4 50 4-speed (1980–1989)
• Simson S 50 B1 50 4-speed (1976–1980)
• Simson S 83 80 4-speed Beta (1994–1996)
• Simson S 50 B2 50 3-speed Electronic (1976–1980)

OEM Number (Comparison Number)

• OEM number for comparison purposes: 203741