The 15-year-old managed three podium finishes last year in his first season to finish second overall in the under-17 age group.
Alex, 18, said this weekend for him was a chance to test the water and see where he sits amongst the open grade in his first outing with the division, after last year sitting third in the under-17 grade before breaking his arm.
"[We'll] see how I fare with these older guys," said Alex, who is in his third season. "I've looked at my times and from my previous ones [run times] and they're not that far apart. We'll see if I can keep up with ... I'll definitely give it a go."
Thankfully for mum, Sarah, this weekend's jumps and drops aren't quite as scary.
At least that's what Jonothan thinks.
"The race we're going to this weekend you drop off like a 5m cliff right at the end," Jonothan said. "You just roll off the cliff. When you commit to it you've got to commit.
"You don't want to get to the edge and be like 'oh na, I don't want to do that', because some guys did that last year and injured themselves. There is a commitment point."
Despite Jonothan downplaying the drop, the brothers will no doubt be using all of their eight inches of suspension on their $6500 to $7000 downhill machines - and if anything goes wrong they will return their bikes to myBike Whangarei to piece them back together before the next round.