CROFT CIRCUIT will once again be reverberating to the sound of two-wheeled action when round four of the No Limits Racing Championships takes place this weekend.

The North Yorkshire track will welcome the ACU National Endurance Championship along with a variety of sprint races headlined by the Pirelli Super Series 1000, along with the Pirelli Super Series 600, both of which feature riders who contest the Bennetts British Superbike Championship.

In the Pirelli 1000 Super Series, Scotsman Callum Grigor has carved out a substantial lead after the first three races with a 57-point advantage from second-placed Ryan Dixon, the cousin of Moto2 Grand Prix rider Jake.

The Pirelli 600 Super Series is headed by local ace James Alderson, from Durham, with Bishop Auckland’s Barry Burrell chasing in second place, so both will be hoping for success at Croft, especially Alderson who lifted the prestigious Ken Redfern Trophy a few weeks ago.

JSC Racing head the eBay ACU National Endurance 1000 standings following their second-place finish in the previous round at Donington Park a month ago. They are ahead of Team DMR powered by MSS, who managed seventh and ADSS 97 who completed the podium last time out.

Qualifying starts on Saturday at 9.30am, with the first of eight races from 11.50, including the feature eBay ACU National Endurance Championship race taking place at 3pm over a three-hour duration. Racing starts at 12.15pm on Sunday with another 14 races throughout the afternoon.

* Tickets are available on the gate costing £18 per adult. Children under 15 are admitted free provided they are accompanied. There is also free car parking and free paddock access. For further details, please visit www.croftcircuit.co.uk or call 01325 721815.