Kenan Sofuoglu set a blistering pace in the opening World Supersport Championship free practice session of the weekend at Kyalami, seven tenths quicker than his closest rival.
With Ten Kate Honda the only team to have tested in South Africa when several World Superbike runners were in attendance back in December, Sofuoglu took full advantage to dominate proceedings.
Coming less than a week after Honda finished off the WSS podium for the first time since 2005, the Turk set a best lap of 1min 42.310secs, well up on second place Eugene Laverty, who popped in ahead of the second Ten Kate bike of Andrew Pitt.
Championship leader Cal Crutchlow was a solid fourth as he gets to grips with Kyalami for the first time, ahead of Kawasaki's Joan Lascorz, while Garry McCoy made it four manufacturers in the top six.
Michele Pirro, Katsuaki Fujiwara, Matthieu Lagrive and Mark Aitchison completed the top ten positions, while Indonesian rider Doni Tata Pradita was just outside in 11th.
Elsewhere, Eugene's brother Michael Laverty makes an appearance this weekend on the Veidec Honda as a replacement for Robbin Harms. He was 26th quickest.