Used airbox adapter for Keihin FCR (MX) carburetors.

Genuine Keihin high quality part. Sudco part number 021-214.
Dimensions:

• flange: oval.
• length: 39mm.

This fits:

• 35-41mm. Keihin FCR carburetors
• 37-41mm. Keihin FCR MX carburetors (which have a removable intake adapter).

Complete as pictured.