As per Art. 4.1.4 to FIA Appendix K: For any homologated car, the HTP must be accompanied by an ASN certified copy (printed on FIA stamped/watermarked paper with an ASN additional authentication) of the car’s original Homologation Form or a ASN certified copy (printed on FIA stamped/watermarked paper with an ASN additional authentication) of the car’s Retrospective Homologation Form.
None of the forms available on this website will be recognised as valid on an event, this is for consultation only.

Porsche 928S

Homologation number: 
283
Make: 
Porsche
Model: 
928S
Group: 
B
Cylinder capacity: 
4957
Transmission: 
RWD
No of cylinder: 
8
Country: 
Germany
Date of homologation: 
June 1, 1986
End of homologation: 
December 31, 1999

Description

List of extensions 2 open
1/1VO
01/06/1986
Brake, Transmission
2/2VO
01/06/1986
Rollbar

Homologation forms & list of extensions