At only 32 years of age, he's climbed the highest mountain in racing and tasted success in Japan in front of more than 100,000 fans.

On Sunday at Kranji in Singapore, Zac Purton will look to add to his impressive feature race resume when he partners star Hong Kong sprinter Aerovelocity in the Group 1 KrisFlyer International Sprint.

The six-year-old New Zealand-bred son of Pins has not raced since winning the Takamatsunoyima Kinen at Chukyo on a rain- affected surface on March 29.

After looking to flounder on the heavy track in the early part of the straight, Aerovelocity found top gear again in the latter stages to account for Hakusan Moon and local star Mikki Isle and was later lauded by trainer Paul O'Sullivan.

"If he's not the greatest [horse I've trained], then at least [he's] the toughest and bravest," O'Sullivan said.

Now, he is flying the nation's Bauhinia flag in Singapore and takes on last year's KrisFlyer winner Lucky Nine (Brett Prebble), globetrotter Rich Tapestry (Olivier Doleuze), local sprint hero Zac Spirit (Joao Moreira), former Aussie Emperor Max (Corey Brown) and filly Kiwi Karma (Manuel Nunes).

Following trackwork on Thursday, O'Sullivan could not fault his star sprinter's fitness and attitude.

"All's good with him," O'Sullivan said. "He's doing everything just as he would at home. He worked 800m this morning with his rider instructed to go about 30 [seconds] and 28 and he did it nicely."

Rich Tapestry followed shortly afterwards at a swifter clip.

Michael Chang's charge also appeared to be in good form. He strode out well, galloping over the floodlit turf under his regular work rider Vincent Sit.

"He feels good," Sit said, as the Group 1 Santa Anita Sprint Championship victor exited the track and headed to the quarantine stables.

The KrisFlyer barrier draw was kind to Aerovelocity yet two of his main rivals - Lucky Nine and Emperor Max - also fared well.

Aerovelocity will start from the three gate on Sunday with the aforementioned duo on his inside.

An on-pace sprinter, Aerovelocity showed he is adept going left-handed in Japan and his navigator has found his place on the world stage.

Last year, Purton broke Douglas Whyte's stranglehold on the Hong Kong jockeys' premiership and now lies second to Moreira this season.

From humble beginnings in Queensland, Purton has won at the elite level at home, in England and Japan.

Singapore is on his bucket list and Aerovelocity is ready to strike.