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SRO homologates the GT4 R Evo package for 2027
The kit revises the radiator ducting, the front splitter mounts and the damper specification. It retrofits to every chassis built since 2021 and is priced within the category's upgrade cap. Fitting takes one day in the customer's own workshop.
Published 21 July 2026
SRO has homologated the GT4 R Evo package for the 2027 season. It is the first update to the car since its 2021 homologation.
What changes
Radiator ducting is revised to lower intake temperature at low speed, which was the car's consistent weakness on street-adjacent circuits. Front splitter mounts move outboard by 40 mm. The damper specification changes to a four-way unit from the same supplier.
Nothing in the engine, gearbox or chassis changes. The part numbers for those remain as they were in 2021.
Cost and fitting
The package retrofits to every GT4 R built since 2021. It is priced within the category's upgrade cap and fits in one working day in the customer's own workshop, with no factory attendance required.
Cars already in customer hands are not obsoleted. A 2021 chassis with the Evo package is the same specification as a 2027 car.