Pol Espargaro and Maverick Vinales once again went quickest in Moto2 and Moto3 pre-season testing at Jerez respectively.
Rain and fog effectively spoiled the final day of the three-day test, with the worsening conditions sealing Espargaro and Vinales' places at the top of the times. The pair also topped their respective categories in preseason testing at Valencia one week ago.
Espargaro, runner-up to Marc Marquez in last year's Moto2 championship, went quickest in all three sessions on the second day.
The Pons rider eventually worked his way down to a 1m42.332s, leaving him just under three tenths of a second clear of Italtrans rider Takaaki Nakagami in second.
Marc VDS's Scott Redding, fourth in last year's championship, finished third fastest but more than half a second down on Espargaro. Julian Simon on the second Italtrans and Aspar rider Nicolas Terol rounded out the top five.
Last year's Moto3 champion Sandro Cortese finished 18th fastest, just ahead of Ratthapark Wilairot, who crashed with Thomas Luthi in the Valencia test.
Luthi will miss the first two rounds of the championship after suffering multiple fractures on his arm and shoulder.
Vinales meanwhile went fastest in what proved to be the critical Moto3 session on the second afternoon, before the conditions worsened.
The Laglisse rider edged out Monlau's Alex Rins by just six thousandths of a second, while Ajo's Luis Salom made it a repeat of the Valencia top three by sealing third.
Jonas Folger was the only other man to get within one second of Vinales, giving KTM a lockout of the top four positions.
Miguel Oliviera continued Mahindra's encouraging start to 2013 by finishing fifth, just ahead of CIP's Juanfran Guevara, who finshed as the fastest rookie.
Combined Moto2 times:
Pos Rider Team/Bike Time Gap
1. Pol Espargaro Pons Kalex 1m42.332s
2. Takaaki Nakagami Italtrans Kalex 1m42.631s + 0.299s
3. Scott Redding Marc VDS Kalex 1m42.849s + 0.517s
4. Julian Simon Italtrans Kalex 1m43.062s + 0.730s
5. Nicolas Terol Aspar Suter 1m43.232s + 0.900s
6. Esteve Rabat Pons Kalex 1m43.407s + 1.075s
7. Mika Kallio Marc VDS Kalex 1m43.509s + 1.177s
8. Jordi Torres Aspar Suter 1m43.549s + 1.217s
9. Johann Zarco Ioda Suter 1m43.671s + 1.339s
10. Dominique Aegerter Technomag Suter 1m43.757s + 1.425s
11. Mike di Meglio JIR Motobi 1m43.783s + 1.451s
12. Simone Corsi Forward Speed Up 1m43.820s + 1.488s
13. Axel Pons Pons Kalex 1m43.882s + 1.550s
14. Alex de Angelis Forward Speed Up 1m44.078s + 1.746s
15. Xavier Simeon SAG Kalex 1m44.185s + 1.853s
16. Mattia Pasini Forward Speed Up 1m44.329s + 1.997s
17. Toni Elias Avintia Kalex 1m44.348s + 2.016s
18. Sandro Cortese Intact Kalex 1m44.404s + 2.072s
19. Ratthapark Wilairot Gresini Suter 1m44.629s + 2.297s
20. Randy Krummenacher Technomag Suter 1m44.695s + 2.363s
21. Anthony West QMMF Speed Up 1m45.005s + 2.673s
22. Ricky Cardus Forward Speed Up 1m45.139s + 2.807s
23. Steven Odendaal Arginano Speed Up 1m45.267s + 2.935s
24. Yuki Takahashi Tady Moriwaki 1m45.546s + 3.214s
25. Danny Kent Tech 3 1m45.557s + 3.225s
26. Kyle Smith Avintia Kalex 1m45.605s + 3.273s
27. Louis Rossi Tech 3 1m45.614s + 3.282s
28. Rafid Topan Sucipto QMMF Speed Up 1m46.380s + 4.048s
29. Marcel Schrotter SAG Kalex 1m46.625s + 4.293s
30. Doni Tata Pradita Gresini Suter 1m46.672s + 4.340s
31. Alberto Moncayo Arginano Speed Up 1m47.286s + 4.954s
Moto3 combined times:
Pos Rider Team/Bike Time Gap
1. Maverick Vinales Laglisse KTM 1m46.805s
2. Alex Rins Monlau KTM 1m46.811s + 0.006s
3. Luis Salom Ajo KTM 1m47.109s + 0.304s
4. Jonas Folger Aspar Kalex-KTM 1m47.719s + 0.914s
5. Miguel Oliveira Mahindra 1m47.958s + 1.153s
6. Juanfran Guevara CIP TSR-Honda 1m48.176s + 1.371s
7. Brad Binder Ambrogio Suter-Honda 1m48.319s + 1.514s
8. Efren Vazquez Mahindra 1m48.327s + 1.522s
9. Danny Webb Ambrogio Suter-Honda 1m48.476s + 1.671s
10. Jakub Kornfeil RW Kalex-KTM 1m48.699s + 1.894s
11. Toni Finsterbusch Kiefer Kalex-KTM 1m48.751s + 1.946s
12. Isaac Vinales Ongetta FTR-Honda 1m48.836s + 2.031s
13. Romano Fenati Italia FTR-Honda 1m48.842s + 2.037s
14. Jack Miller RTG FTR-Honda 1m49.185s + 2.380s
15. Alex Marquez Monlau KTM 1m49.201s + 2.396s
16. Alessandro Tonucci Tasca Honda 1m49.333s + 2.528s
17. Alexis Masbou Ongetta FTR-Honda 1m49.358s + 2.553s
18. Jasper Iwema RW Kalex-KTM 1m49.511s + 2.706s
19. Eric Granado Aspar Kalex-KTM 1m49.534s + 2.729s
20. Zulfahmi Khairuddin Ajo KTM 1m49.553s + 2.748s
21. Livio Loi Marc VDS Kalex-KTM 1m49.576s + 2.771s
22. Ana Carrasco Laglisse KTM 1m49.673s + 2.868s
23. Philipp Oettl Paddock Kalex-KTM 1m49.678s + 2.873s
24. Arthur Sissis Ajo KTM 1m49.769s + 2.964s
25. Niccolo Antonelli Gresini FTR-Honda 1m49.774s + 2.969s
26. Francesco Bagnaia Italia FTR-Honda 1m49.829s + 3.024s
27. Matteo Ferrari Ongetta FTR-Honda 1m49.946s + 3.141s
28. Lorenzo Baldassarri Gresini FTR-Honda 1m50.072s + 3.267s
29. John McPhee RTG FTR-Honda 1m50.101s + 3.296s
30. Niklas Ajo Avant KTM 1m50.140s + 3.335s
31. Hyuga Watanabe Tasca Honda 1m50.323s + 3.518s
32. Alan Techer CIP TSR-Honda 1m50.588s + 3.783s
33. Florian Alt Kiefer Kalex-KTM 1m50.642s + 3.837s