- https://www.simso-shop.de/Zylinder-Kolben/?force_sid=3hapsa27old080tb97acm1142hZylinder | Kolben
- https://www.simso-shop.de/Zylinder-Kolben/Motor-M541/?force_sid=3hapsa27old080tb97acm1142hMotor M541
- https://www.simso-shop.de/Zylinder-Kolben/Motor-M541/Zylinder-Sets-70-ccm/?force_sid=3hapsa27old080tb97acm1142hZylinder-Sets - 70 ccm