The next round of the series is at Hampton Downs on March 10, with round four set for Hampton Downs on March 16-17.
"I've been playing around on motorcycles for years but last season was my first of racing since I gave up the serious stuff about 20 years ago. But this is a sport that you just can't walk away from."
He was national TT champion in 1987 and also scored points in the World Superbike Championships in 1988 and 1989 - he hung up his helmet in 1992 - and now, two decades on, he races a bike that was one of the best from back in his own golden era, a 1989 Yamaha FZR1000.
Kattenberg is also racing the popular Tri Series and is winning the Post Classic Pre-89 class after the second of three rounds at Manfeild on Sunday.
"Palmerston North's Glen Williams has the measure of me at the moment," Kattenberg said. "I'm riding the same bike I rode last year, although now with a six-speed gearbox and I've freshened up the motor a bit, but it's the same bike that used to win races back in the 1980s. This Tri Series has a lot of clout, after the nationals proper, and I'm keen to do well."
The third and final round of the Tri Series is set for the streets of Wanganui, on the famous Cemetery Circuit, on Boxing Day.
"This racing has been a bit of a rebirth for me and I'm really enjoying racing again. The difference now is that there's no real pressure on me to win. I don't have to prove anything to anyone."
Kattenberg is sponsored by Maidstone Yamaha in Upper Hutt.