SRO GT4


SRO GT4 is a class of grand tourer racing cars maintained by the SRO Motorsports Group that race in various auto racing series across the globe. It is an entry-level class aimed at amateur drivers. GT4 cars are production-based vehicles with a few modifications for racing. The cars are closer to their road legal counterparts than most other GT racing classes; they are also one of the least powerful GT categories. The class uses a balance of performance system to provide close competition between different race cars.

History

The GT4 category was founded by the SRO at the end of 2006, and first introduced in 2007, racing in the GT4 European Cup as a cheaper alternative for GT3 racing. The category was also added to the British GT Championship in 2008. The SRO also founded the Dutch GT Championship in 2009. The GT4 class was also adapted by several other small national championships.
After an unsuccessful attempt to expand the category in 2012, the SRO introduced the GT4 European Trophy, consisting of five rounds from existing European Championships. This replaced the GT4 European Cup. In 2014, this series merged with the Dutch GT4 Championship to form the GT4 European series.
Due to a low number of entries, the SRO announced that the GT4 European series would be split into two championships, the GT4 European Series Northern Cup and the GT4 European Series Southern Cup. The Northern Cup would turn back into the GT4 European series, while the Southern Cup would turn into the FFSA GT Championship.
In North America, IMSA allows GT4 from mainstream manufacturers in the Grand Sport class of the Michelin Pilot Challenge since 2017, and in the Grand Sport X class of the IMSA VP Racing SportsCar Challenge since its inaugural season in 2023.

Homologated vehicles

Source:
As of October 2024, over 50 vehicles have gone through the homologation project with the RACB. GT4 cars can either directly be built by the automotive manufacturer, or by race teams and tuning companies.
Nr.ManufacturerModelDeveloperDebutExpirationImageNotes
RACB GT4-001MaseratiTrofeo Light GT4Scuderia Giudici23 January 200431 December 2011
RACB GT4-002FordMustang FR500C Multimatic Motorsports9 February 200531 December 2011
RACB GT4-003Aston MartinV8 Vantage N24Prodrive3 June 200631 December 2011
RACB GT4-004BMWZ4 M Coupé GT4 G&A Racing7 September 200631 December 2011
RACB GT4-005Nissan350Z RJN Motorsport5 May 200731 December 2011
RACB GT4-006PorscheCaymanGPR Racing5 May 200731 December 2011
RACB GT4-007GinettaG50 GT4Ginetta Cars30 September 200731 December 2011
RACB GT4-008Peugeot207 THP SpiderPeugeot Sport5 May 200731 December 2011
RACB GT4-009Lotus2-Eleven GT4 Supersport Lotus Cars13 April 200831 December 2011
RACB GT4-
010		ChevroletCorvette C6 GT4Callaway Cars20 April 200831 December 2011
RACB GT4-011DonkervoortD8 GT4Donkervoort Racing3 August 200831 December 2011
RACB GT4-012Aston MartinV8 Vantage GT4Prodrive6 April 200931 December 2018
  • Includes:
  • * 2011 update
RACB GT4-013MaseratiGranTurismo MC Maserati6 April 200931 December 2018
RACB GT4-014LotusExige GT4 Lotus13 April 200931 December 2018
RACB GT4-015BMWM3 GT4 BMW Motorsport13 April 200931 December 2018
RACB GT4-016Nissan370Z NISMO GT4 RJN Motorsport3 May 200931 December 2018
RACB GT4-XXXBuforiBMS R122 November 2009Never went through proper SRO GT4 Homologations. Competed in GT Cup classes only.
RACB GT4-017ChevroletCamaro SS GT4Riley Technologies10 January 201031 December 2018
RACB GT4-018Porsche911 GT4 GT3.nl1 April 201031 December 2018
  • Includes:
  • * 2012 update
RACB GT4-019LotusEvora Cup GT4 Lotus Cars28 August 201031 December 2018
RACB GT4-020AudiTT GT4Jorg Van Ommen Autosprot14 January 201231 December 2018
RACB GT4-021MazdaMX-5 GT4 Jota Sport7 April 201231 December 2018
RACB GT4-022ToyotaGT86 GT4 GPRM13 February 201331 December 2018
RACB GT4-023ChevronGR8 GT4Chevron13 February 201331 December 2021
RACB GT4-024GinettaG55 GT4Ginetta Cars7 April 201431 December 2021
RACB GT4-025KTMX-Bow GT4Reiter Engineering5 January 201531 December 2021
  • Includes:
  • * X-Bow GT4 Evo
    • RACB GT4-026SINR1 GT4SIN6 April 201531 December 2019
    RACB GT4-027PorscheCayman GT4 Clubsport Manthey Racing4 April 201631 December 2024
  • Includes:
  • * Cayman GT4 Clubsport MR
    • RACB GT4-028BMWEkris M4 GT4 Ekris Motorsport4 April 201631 December 2021
    RACB GT4-029PorscheCayman SP PRO4 PROsport Performance10 April 201631 December 2021
    RACB GT4-030McLaren570S GT4McLaren16 April 201631 December 2024
    RACB GT4-031MaseratiGranTurismo MC GT4 Maserati24 April 201631 December 2024
    RACB GT4-032FordMustang GT4 Multimatic Motorsports28 January 201731 December 20246th Generation Mustang
    RACB GT4-033ChevroletCamaro GT4.RPratt & Miller9 March 201731 December 2024
    RACB GT4-034PanozAvezzano GT4Élan Motorsport Technologies10 March 201731 December 2024
    RACB GT4-035AudiR8 LMS GT4 Audi Sport10 April 201731 December 2029
  • Includes:
  • * R8 LMS GT4 evo
    • RACB GT4-036BMWM4 GT4 BMW Motorsport24 May 201731 December 2024
  • Includes:
  • * M4 GT4 EVO 2021
    • RACB GT4-037Mercedes-AMGGT4 HWA30 July 201731 December 2031
  • Includes:
  • * 2025 Evo updates
    • RACB GT4-038AlpineA110 GT4Signatech6 March 201831 December 2031
  • Includes:
  • * A110 GT4 Evo
  • * A110 GT4+
    • RACB GT4-039JaguarF-Type SVR GT4Invictus Games Racing31 March 201831 December 2024
    RACB GT4-040Aston MartinVantage AMR GT4 Prodrive30 April 201831 December 2029 First generation
    RACB GT4-041Porsche718 Cayman GT4 Clubsport Manthey Racing3 January 201931 December 2029
    • Includes:
    • * 718 Cayman GT4 Clubsport MR
    RACB GT4-042ToyotaGR Supra GT4 Toyota Gazoo Racing4 March 201931 December 2029
    • Includes:
    • * GR Supra GT4 EVO
    • * GR Supra GT4 EVO2
    RACB GT4-XXXSaleenS1SaleenPlanned for 2020 SeasonHomologations failed.
    RACB GT4-043GinettaG56 GT4Ginetta Cars2 March 202131 December 2027
  • Includes:
  • * G56 GT4 Evo
    • RACB GT4-044Porsche718 Cayman GT4 RS Clubsport Porsche17 November 202131 December 2031
    RACB GT4-045LotusEmira GT4Lotus5 May 202231 December 2029
    RACB GT4-046BMWM4 GT4 BMW Motorsport17 June 202231 December 2029
  • Includes:
  • * M4 GT4 EVO
    • RACB GT4-047McLarenArtura GT4McLaren23 June 202231 December 2029
    RACB GT4-048NissanZ NISMO GT4 NISMO27 September 202231 December 2030
    RACB GT4-049FordMustang GT4 Multimatic Motorsports28 June 202331 December 2030 7th Generation Mustang
    RACB GT4-050Aston MartinVantage AMR GT4 Evo Prodrive27 February 202431 December 2030 Updated version for 2024 onward.
    RACB GT4-XXXHyundaiGenesis CoupéConcept. Never went through Homologations.
    RACB GT4-XXXRadicalRXCFailed GT4 Homologation process.