It was three from three for Tauranga rider Robbie Shorter in the latest round of the New Zealand Superbike Championship in Invercargill.

Riding his new Kawasaki, the 40-year-old and his sidecar partner Auckland's Colin Buckley managed a near perfect round with three wins and a new track record.

Robbie Shorter in action. Photos: JDAS Photos.

Shorter says he is thrilled with the weekend's results.

'I'm really happy, it's just getting better and better week by week. I'm getting a bit more familiar with the bike. So yeah it's really good.”

It's the first time Shorter has raced on Invercargill's Teretonga Park Raceway in about 20 years.

'It was a typical Southland summery day. Nice and cold. We had a little bit of rain in the morning but the tracks were actually in really good condition. They've sort of resurfaced quite a bit of it. The Southland club put on a good meeting. So it was a good weekend all round.”

Robbie Shorter.

He wasn't the only one singing the praises of the track, with Taupo's Scotty Moir in the superbike class.

Moir came away with a first and two seconds at the weekend but the division is still lead by Wellington's Sloan Frost, who has a 31 point lead from his nearest rival Hamilton's Andrew Stroud.

Nine-time former national superbike champion Stroud, who returned to the racetrack this season after a two-year hiatus, showed he was still capable of winning races and it is certainly not an impossible dream for him to believe that he can overturn that 31-point deficit in the two rounds that remain.

The big mover in the class was Moir, who experienced a difficult weekend at Ruapuna but celebrated a dream run at Teretonga and heroically elevated himself from a distant eighth overall after round one to fourth in the standings.

"This is not the first time I've won a round at the nationals. I did it too at Taupo in 2014, but this is right up there with that," says Moir.

The four-round championship now heads to Levels Raceway, near Timaru next weekend, with the final round scheduled for Hampton Downs, near Huntly on March 5-6.

Leading points standings after the second of four rounds of the New Zealand Superbike Championships at the weekend:

Superbikes: 1. Sloan Frost (Wellington, Suzuki) 134 pts; 2. Andrew Stroud (Hamilton, Suzuki) 103; 3. John Ross (Christchurch, Suzuki) 103.

Superstock 1000: 1. Toby Summers (Manukau, Kawasaki) 139; 2. Dillon Telford (Tirau, Aprilia) 126; 3 Dan Ornsby (Oxford, Nth Canterbury, Yamaha) 32.

Supersport 600: 1. Cameron Hudson (Christchurch, Yamaha) 128.5 pts; 2. Daniel Mettam (Glen Eden, Suzuki) 110; 3. Shane Richardson (Wainuiomata, Kawasaki) 75.5.

Pro Twins: 1. Dennis Charlett (Christchurch, Suzuki) 140 pts; 2. Bailie Perriton (Ashburton, Suzuki) 130; 3. Ben Rosendaal (Whangamata, Suzuki) 96.

125GP: 1. Rogan Chandler (Upper Hutt, Honda) 152 pts; 2. Ashley Weller (Christchurch, Honda) 112; 3. Chris Cain (Auckland, Honda) 97.

Superlites: 1. Shaun Harris (New Plymouth, Suzuki) 146 pts; 2. Gavin Veltmeyer (Auckland, Suzuki) 94; 3. Jacob Stroud (Hamilton, Yamaha) 94.

Lightweights: 1. Dennis Charlett (Christchurch, KTM) 126 pts; 2. Tim McArthur (Rolleston, Kawasaki) 126; 3. Richard Willetts (Timaru, Yamaha) 83.

250cc production: 1. Lewis Dray (Ashburton, Kawasaki) 130 pts; 2. Jacob Stroud (Hamilton, Kawasaki) 101; 3. Alex Bowers (Christchurch, Kawasaki) 85.

Sidecars: 1. Colin Buckley (Auckland) and Robbie Shorter (Tauranga, Kawasaki) 152 pts; 2. Spike Taylor and Astrid Hartnell (Masterton, Suzuki) 108; 3. A J MacDonald and David Gorst (Kaiapoi, Suzuki) 82.