Stefan Bradl, who won his first Moto2 race last Sunday at Estoril stayed on top of the timesheets during Friday's pair of practice sessions for the Valencia season finale.
The Viessmann Kiefer (Suter) rider finished second practice 0.181sec ahead of Aspar Suter's Julian Simon, who is looking to secure second in the championship this weekend, and perhaps take his first Moto2 win.
World champion Toni Elias, riding in his 17th and final Moto2 event before moving back to MotoGP next year, was only eighth quickest, but Karel Abraham - also moving to MotoGP in 2011 - claimed third on Friday for Cardio AB (FTR).
Alex de Angelis (MotoBI) and Scott Redding (Suter) completed a top five covered by just 0.282sec, with home wild-card Carmelo Morales sixth for Racing Team Germany.
World Supersport champion Kenan Sofuoglu, making his second start for Technomag-CIP (Suter), was 13th.
Lap times are always close at the stadium circuit, but a Friday top 17 covered by less one-second was impressive even by Valencia standards.
Friday practice (2) - Valencia:
1. Bradl (Suter) 1m 36.666sec
2. Simon (Suter) +0.181s
3. Abraham (FTR) +0.209s
4. de Angelis (MotoBI) +0.265s
5. Redding (Suter) +0.282s
6. Morales (Suter) +0.515s
7. Luthi (Moriwaki) +0.566s
8. Elias (Moriwaki) +0.575s
9. Corsi (MotoBI) +0.592s
10. Corti (Suter) +0.630s