Knowing the intricacies the Fagan's Valley Raceway at 120km/h could be the key to Bay of Plenty drivers taking the chequered flag at the latest round of the NZ Rotax Max Challenge and ProKart Series.

Round four of the six-part ProKart national series roars into the Bay of Plenty Kart Club's home track, between Te Puke and Papamoa, this weekend with drivers making the trip from across the country and the Tasman Sea.

Josh Adlam will be competing in the Rotax Match Challenge this weekend. Photo by Tracy Hardy.

A total of 90 competitors will turnout in six categories, with the fastest karts reaching speeds of 120km/h down the back straight.

More than just a series, ProKart has cemented itself as home for the country's elite KZ2 drivers competing in either Masters, Restricted or Open.

This series is hosted by the country's top facilities, helping aid the challenge facing ProKart drivers of race distance and format which has proven during past years to crown a true champion.

As well as the senior KZ2 drivers, junior Cadet ROK, and Vortex Mini ROK have been added to the series for the first time this year, giving a great opportunity for newcomers to experience the challenges of this series.

Bay of Plenty Kart Club race secretary Jo Adlam says it's fantastic to have the event in the Bay of Plenty once again, hopefully playing into the hands of the local drivers.

Leading the local charge is Josh Adlam, sitting seventh in the Rotax Max Light division, and 13^th placed Taylor Harte in the DD2 division.

Others include Hunter Cheetham in the Rotax Max Junior, Niki Urwin, who is third in the DD2 Masters division, and Blake Austin and Gemma Winters both taking part in the Vortex Mini Rok.

There is also a smattering of Australian talent with two junior and two senior drivers on the grid, as well as Palmerston North karting international Josh Hart, who is now living and working in NZ after six years overseas.

The winner of the Rotax Max Light, DD2 and Rotax Max Junior divisions will all book their spots at the Rotax World champs in Spain later this year.

This means there is some serious racing to be held across the weekend as the series nears the business end of the season, says Jo.

'It's quite major, these drivers are the top in NZ and have these six rounds to get as many points and try to get to the worlds.

'It's great to have a round here in the BOP and hopefully a good advantage for the local drivers.”

Today's opening day has an eight-minute qualifying round for all drivers followed by two heats. Subsequent heats, pre-finals and finals are held on Sunday. Both days run from 9am-4pm.

Drivers then head into round five in Auckland before the sixth and final round in Hamilton.