# FIA's 2027 Rally Class Plan

> FIA sets 32mm vs 33mm turbo restrictor rule to split Rally1 and Rally2 in WRC 2027.
- Title: FIA's 2027 Rally Class Plan · Autosport | Shortify
- Summary: FIA sets 32mm vs 33mm turbo restrictor rule to split Rally1 and Rally2 in WRC 2027. FIA will use 32mm turbo restrictor for Rally2 cars without update kit to…
- Keywords: fia, wrc, rally1, rally2, wrc27, turbo restrictor, 32mm, 33mm, power difference, 15 horsepower, sports, cars
- Source: Autosport — https://autosport.com/wrc/news/how-the-fia-plans-to-differentiate-between-rally1-and-rally2-in-wrc-2027/10861578
- Author: Tom Howard
- Published: 2026-10-03T13:21:12+00:00
- Read time: 1 min
- Topics: fia, wrc, rally1, rally2, wrc27, turbo restrictor, 32mm, 33mm, power difference, 15 horsepower, sports, cars
## FIA proposes 2027 class split
The FIA has put forward its proposal to differentiate between classes in the new era in WRC in 2027.
## WRC27 and Rally2 kit cars
Next year the WRC is gearing up for a seismic shift in technical regulations that will see all-new WRC27 cars and Rally2 cars, featuring the FIA’s 7,500-euro update kit, compete under one new Rally1 umbrella.
## Rally2 kit cars weigh less
Rally2 cars featuring the update kit will weigh 10 kilograms less than the new WRC2027 cars.
## Performance concerns
Rally2 cars without the FIA update kit are also permitted to compete in the championship next year albeit in separate Rally2/WRC2 class.
## Turbo restrictor change
WRC27 and Rally2 Kit cars will be permitted to run a 33mm turbo restrictor, while Rally2 cars without the update kit will have to run a 32mm turbo restrictor.
## Power difference expected
It is anticipated this change could produce as much as a 15-horsepower difference between the two classes, with Rally2 cars producing a 290-horsepower output.
## Key takeaway

FIA will use 32mm turbo restrictor for Rally2 cars without update kit to differentiate from Rally1 cars with 33mm restrictor in WRC 2027.