CSM Names Don Yount and Jonathan Klein for 2027 Aston Martin GT4 Entry

Archive: Volt Racing’s No. 7 Aston Martin Vantage AMR GT4 at Watkins Glen on June 25, 2022. This is not CSM’s No. 3 or the announced 2027 GT4 Evo. Photo: SmackJam / Wikimedia Commons, CC BY-SA 4.0. No editorial alterations; display sizes may vary.

Czabok-Simpson Motorsport has named Don Yount and Jonathan Klein to drive its No. 3 Aston Martin Vantage AMR GT4 Evo for the full 2027 IMSA Michelin Pilot Challenge season. The October 16, 2026 announcement confirms a driver pairing for one of the team’s two planned full-season Aston Martin entries in the Grand Sport class.

IMSA’s official report says the program continues the Aston Martin effort CSM introduced in the second half of 2026. The announcement is a season commitment, not a race result or evidence of where the pairing will rank.

An endurance return and a long-awaited comeback

Yount returns to full-time IMSA competition with experience across prototype and GT machinery. He started professionally in IMSA in 2015 and was part of Turner Motorsport’s GTD-winning lineup at Watkins Glen in 2018.

Klein’s return follows a much longer absence. His last Indy Lights appearances came in 2008, after finishing runner-up in the 2006 Indy Pro Series championship. CSM co-owner Stephen Simpson is a familiar figure from his earlier open-wheel career.

The pairing gives CSM two different experience profiles. The practical questions now move to preparation, shared-car consistency and adapting that background to a full GT4 campaign; the announcement alone cannot answer them.

Daytona opens the 2027 calendar

The official 2027 Michelin Pilot Challenge schedule lists a four-hour opener during Daytona’s January 28–31 event weekend. That is the Pilot Challenge race, not the 24-hour WeatherTech championship race sharing the weekend branding.

Sebring follows during March 17–20 with a two-hour race. These are published event windows, not a confirmed session-by-session timetable. Fans should consult the organizer’s detailed schedule when planning arrival or viewing times.

For a separate GT racing commitment, read our BMW Macau FIA GT World Cup lineup report; its GT3 machinery and event should not be confused with CSM’s GT4 program.