Even seven-time former national moto trials champion Warren Laugesen, from Hawke's Bay, is expected to vie for top honours at the Te Teko course today.
Add enduro riders into the mix and attention must be paid to former national enduro champion Chris Power, of Auckland, who will ride a Yamaha YZ250 in the over-200cc, two-stroke category.
In the battle of the big bore bikes it will probably be a showdown between three-time former national cross-country champion Adam Reeves (Yamaha YZ450F), of Palmerston North, and his motocross exponent rivals in the form of defending Tarawera 100 champion Ben Townley, of Tauranga, and Taupo's Brad Groombridge.
Mount Maunganui's Rhys Carter takes a break from racing the MX1 class at the Australian Motocross Championships to enter the Tarawera 100.
The race starts at 10am.