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IMSA Technical Bulletin #25-64

Subject: IMSA GTP, GTD, and GTD PRO Regulatory Control Diagram Update

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Bulletin Details

To:
All IMSA WeatherTech Sportscar Championship GTP, GTD, GTD PRO Participants
From:
IMSA Competition
Date:
July 22, 2025
Re:
IMSA GTP, GTD, and GTD PRO Regulatory Control Diagram Update

Update Summary

Per Article 8 of the LMDh Appendixes and Article 7 of GTD/GTD PRO Technical Regulations, the IMSA GTP and GTD/GTD PRO Regulatory Control Diagrams utilized by the IMSA Scrutineering Logger for enforcement of GTP and GTD/GTD PRO Power, Energy, and Differential regulations have been updated with Release 2436 and is effective immediately.

This latest release is available on NASCAR ShareFile solely to GTP and GTD/GTD PRO Entrant Representatives and nominated GTP and GTD/GTD PRO Manufacturer Representatives.

Inquiries

Questions regarding access to the ShareFile system should be directed to imsaengineering@imsa.com.

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