Aprilia and Kawasaki concluded their final day of World Superbike testing ahead of the imminent winter ban by outpacing BMW and Ducati during day three of testing at Jerez, with Eugene Laverty emerging quickest of all.
The two manufacturers were completing the last of a three-day test at the Spanish venue, whereas BMW and Ducati were embarking on their first visit to Jerez.
Not surprisingly, Aprilia and Kawasaki had the edge on their incoming rivals, Laverty setting the best time of the test thus far at 1min 40.185secs, ahead of Tom Sykes, who was accredited with an unofficial time of 1min 40.440secs.
Michel Fabrizio continued to show impressive pace on the privateer Red Devils Roma Aprilia, the Italian emerging marginally ahead of Sylvain Guintoli, who has finally been confirmed as Aprilia's second factory rider for the 2013 World Superbike season.
Loris Baz rounded out the top five on the next Kawasaki, three tenths up on Marco Melandri, the BMW Italia rider getting down to business by lapping as the fastest of the 'new arrivals' at 1min 41.800secs.
Indeed, the Italian was considerably quicker than Carlos Checa in eighth place (behind Aprilia test rider Alex Hofmann), the 2011 champion lapping his Alstare Ducati 1199 Panigale in a best of 1min 43.089secs.
He was followed by Chaz Davies on the second of the BMW Italia machines, the Welshman setting a best time of 1min 43.400secs.
Rounding out the timesheets was series returnee Max Neukirchner, making his group test debut on the MR Ducati, and Ayrton Badovini, who was getting his first trial on the Panigale having been confirmed with Alstare earlier this month.
While Aprilia and Kawasaki, along with Honda, have concluded their WSBK campaign for 2012, Ducati and BMW will continue at Jerez until Friday.
Unofficial lap times
1. Eugene Laverty
IRL Aprilia Racing RSV4 1min 40.185secs
2. Tom Sykes
GBR Kawasaki Racing ZX-10R 1min 40.400secs
3. Michel Fabrizio
ITA Red Devils Roma Aprilia RSV4 1min 40.956secs
4. Sylvain Guintoli
FRA Aprilia Racing RSV4 1min 41.239secs
5. Loris Baz
FRA Kawasaki Racing ZX-10R 1min 41.500secs
6. Marco Melandri
ITA BMW GoldBet Italia S1000RR 1min 41.800secs
7. Alex Hofmann
GER Aprilia Racing RSV4 1min 42.103secs
8. Carlos Checa
ESP Alstare Ducati 1199 Panigale 1min 43.089secs
9. Chaz Davies
GBR BMW GoldBet Italia S1000RR 1min 43.400secs
10. Max Neukirchner
GER MR Ducati 1199 Panigale 1min 43.613secs
11. Ayrton Badovini
ITA Alstare Ducati 1199 Panigale 1min 43.613secs