Here you can get a KRM 90-100 exhaust flange for mopeds with D50B0 and EBS engine.

 Inner diameter: 34mm
 Outer diameter: 38mm

 With tabs for the exhaust springs.

 The flange was slightly ground down on the outer diameter.

 Suitable for:
 - Derbi
 - Aprilia (from 2006 onwards)
 - Gilera