Cameron Waters and Luke Youlden joined the 2:05s club as co-driver practice continued for Sunday's Supercheap Auto Bathurst 1000.
Driving Chaz Mostert's Pepsi Max Ford, Waters put down the session's best of 2:05.77s with three of the 45 minutes remaining.
The time was just 0.3s slower than Fabian Coulthard's record setting best from Thursday afternoon's session.
Coulthard's own co-driver Youlden was the only other man into the 2:05s, falling just 0.1s shy of Waters with his final lap.
The times heighten expectations of further records later today when the primary drivers return to the cars.
“It's absolutely amazing to be in the 5s,” beamed Waters, who also continues his Dunlop Series duties this weekend.
“I came here aiming to be in the 6s and to do a 5 is unreal. I'm really happy with the car and we're really looking good for the weekend.”
The Holden Racing Team's Russell Ingall was third fastest ahead of Red Bull's Paul Dumbrell, who jumped up from 25th on his final lap.
Marcos Ambrose ended up fifth after spending a significant portion of the session atop the sheets thanks to a 2:06.4s best.
“I'm really proud of the team here,” he said. “We haven't had tyres yet and I probably won't get them until the race. But I'm really excited about our form and really comfortable.”
Steve Owen, Warren Luff, Taz Douglas, Dean Canto and Alex Buncombe completed the top 10.
David Russell's Nissan returned to the circuit following overnight repairs, recording the 24th fastest time.
Practice 4 was devoid of any major dramas, although several drivers endured harmless offs through The Chase.
Among them was Steven Richards, who ended up 12th after a mistake on his best set of tyres.
A fifth practice session will take place later today ahead of qualifying.
Result: V8 Supercars Practice 4 (Co-Drivers only), Mount Panorama
1 | Pepsi Max Crew | Cameron Waters | Ford Falcon FG/X | 2:05.7220 | |
2 | Freightliner Racing | Luke Youlden | Holden Commodore VF | 2:05.8330 | 00.1110 |
3 | Holden Racing Team | Russell Ingall | Holden Commodore VF | 2:06.2543 | 00.5323 |
4 | Red Bull Racing Australia | Paul Dumbrell | Holden Commodore VF | 2:06.2838 | 00.5618 |
5 | DJR Team Penske | Marcos Ambrose | Ford Falcon FG/X | 2:06.4332 | 00.7112 |
6 | Pepsi Max Crew | Steve Owen | Ford Falcon FG/X | 2:06.4433 | 00.7213 |
7 | Holden Racing Team | Warren Luff | Holden Commodore VF | 2:06.4721 | 00.7501 |
8 | Nissan Motorsport | Taz Douglas | Nissan Altima | 2:06.4853 | 00.7633 |
9 | The Bottle-O Racing Team | Dean Canto | Ford Falcon FG/X | 2:06.5399 | 00.8179 |
10 | Nissan Motorsport | Alex Buncombe | Nissan Altima | 2:06.5682 | 00.8462 |
11 | Nissan Motorsport | Dean Fiore | Nissan Altima | 2:06.5822 | 00.8602 |
12 | Red Bull Racing Australia | Steven Richards | Holden Commodore VF | 2:06.6305 | 00.9085 |
13 | Wilson Security Racing GRM | Alexandre Premat | Volvo S60 | 2:06.7508 | 01.0288 |
14 | Repair Management Aust Racing | Oliver Gavin | Holden Commodore VF | 2:06.8269 | 01.1049 |
15 | GB Galvanizing Racing | Macauley Jones | Holden Commodore VF | 2:06.9003 | 01.1783 |
16 | Supercheap Auto Racing | Tony D'Alberto | Holden Commodore VF | 2:07.1866 | 01.4646 |
17 | Team Cooldrive | Karl Reindler | Holden Commodore VF | 2:07.2079 | 01.4859 |
18 | Team BOC | Andrew Jones | Holden Commodore VF | 2:07.2238 | 01.5018 |
19 | Erebus Motorsport V8 | Alex Davison | Mercedes E63 AMG | 2:07.3903 | 01.6683 |
20 | Erebus Motorsport V8 | Jack Le Brocq | Mercedes E63 AMG | 2:07.4888 | 01.7668 |
21 | Super Black Racing | Ant Pedersen | Ford Falcon FG/X | 2:07.5047 | 01.7827 |
22 | Team Darrell Lea STIX | Jonathon Webb | Holden Commodore VF | 2:07.5328 | 01.8108 |
23 | Wilson Security Racing GRM | Chris Pither | Volvo S60 | 2:07.6205 | 01.8985 |
24 | Nissan Motorsport | David Russell | Nissan Altima | 2:07.6944 | 01.9724 |
25 | Walkinshaw Racing | Sebastien Bourdais | Holden Commodore VF | 2:07.7882 | 02.0662 |
26 | Plus Fitness / Go Karts Go | Drew Russell | Holden Commodore VF | 2:08.5035 | 02.7815 |
27 | Harvey Norman Supergirls | Renee Gracie | Ford Falcon FG/X | 2:09.4026 | 03.6806 |