The swingarm spoilers, nicknamed 'spoons' or 'chins', that ignited a feud between manufacturers in Qatar this year will still be legal under MotoGP's stricter aerodynamic regulations in 2020.
The 2019 Formula 1 season will welcome a series of new regulation tweaks, creating a revised look to the cars as part of a wider push to improve the show.
Totting-up process to keep tabs on driver discretions, while pit-lane, engines and gearbox rules all receive a make-over in latest version of F1 sporting regulations.
The new 2013 IZOD IndyCar Series rulebook has been issued to teams by race director Beaux Barfield, retaining the engine change penalties and adding new tweaks to the points system.
Mark Webber has said that he does not expect to see any difference in race performance due to recent F1 rule changes, but admits the fight will be fair.
FIA President Jean Todt has yielded to the pressure applied by Bernie Ecclestone and F1's manufacturers in agreeing to delay the introduction of the sport's new engine formula until 2014 - and to go with V6 power rather than just four cylinders
F1's governing body the FIA has unveiled a raft of regulation changes for the coming seasons, from the abolition of the team orders ban to the introduction of 'greener', 1.6-litre turbocharged engines
Double-diffusers - an innovation that threatened to turn the first half of the 2009 F1 World Championship campaign into a political battleground - are to be outlawed from 2011, the Formula One Teams' Association (FOTA) has agreed
The controversial, new-for-2009 in-season ban on Formula 1 testing could already be set to change, it has been suggested, as teams continue to struggle to get to grips with the rule changes and develop the complicated KERS (Kinetic Energy Recovery Systems) technology.
Following doubt cast by rival teams upon the legality of the design of Ferrari's F60, the Scuderia has modified the rear exhaust outlets on its new car.
The blame for the withdrawal of both Subaru and Suzuki from the World Rally Championship at the end of last year can be laid squarely at the feet of organisers the FIA, argues David Richards.
Lewis Hamilton has admitted that he does not expect his Formula One world title defence to be any easier than this year's triumph, particularly with the category radically overhauling its rulebook for 2009.
Revisions to the 2005 British Touring Car Championship's sporting regulations have been decided which series organisers hope will lead to even better season of racing next year.
Corona Rally Mexico is one of the first events in the 2004 FIA World Rally Championship to adopt a host of new regulations coming into force. So what will be different? The reconnaissance on Wednesday and Thursday morning