THE spectacular Cadders Hill circuit at Lyng welcomes some of the world's best riders on Sunday for round three of the 2011 Maxxis British Motocross championship.

Widely recognised as one of the best domestic series in the world, competitors from eight nations, on factory-supported machinery, will be going handlebar to handlebar as they challenge for honours in the MX1, MX2 and MXY2 (youth) classes.

It's still early days in the eight-round championship which sees the MX1 (450cc) and MX2 (250cc) class riders compete in three 20-minute plus two lap races at every venue.

The MXY2 riders, who also ride 250cc machinery, have two 16-minute plus one lap races in the full day's action-packed programme, which is organised by the Norwich Vikings Motorcycle Club.

LS Honda's world title contender Shaun Simpson heads the British MX1 table after the opening two rounds, having finished all races on the top two steps of the podium.

The young Scotsman will have to maintain that level of consistency if he is to overcome the challenge of Bikeit Yamaha's Jason Dougan, former British champion and previous Lyng winner Brad Anderson on the PAR Honda – as well as the factory CCM pairing of Stephen Sword and Tom Church.

In the MX2 class you have to look down the championship table to fourth place before you find a home rider, with the top three spots being filled by riders from Switzerland, America and Latvia.

With four wins from six races Arnaud Tonus leads the title chase form Bikeit Yamaha team-mate Zach Osborne, with Matis Karro on the MVR-D Suzuki the only other rider to break the dominance of the leading pair.

Local fans will hope that Bury St Edmunds' Elliott Banks-Browne can muscle his DB Racing Honda into contention and challenge for victory on home turf as he looks to move up from fourth place.

The MXY2 class is all about the stars of tomorrow. Open to youth riders from 14 to 17-years-old on 145cc two-stroke, or 250cc four-stroke powered machinery these are the pick of the crop progressing from the national youth ranks.

After the opening round in Kent at the end of March, it is Bournemouth Pro-Circuit Kawasaki's Jake Shipton who holds a narrow one-point advantage from HM Plant Red Bull KTM's Ryan Houghton, with Bikeit Yamaha's Bradley Pocock third.

Norwich 17-year-old Luke Parker, who finished second in the Eastern Centre Adult Junior Championship last year, is looking for his big break onto the national platform.

The 250cc TRM Honda-mounted Eastern Centre youth champion qualified to ride at the opening round in Kent, and grabbed a points scoring finish to guarantee his entry at round two on his home track at Lyng.

The Cadders Hill track is situated at Lyng near Dereham, and will be signposted from the A47 and A1067.

Qualifying gets under way at 9am with the first championship race due of the line at 12.15pm.

Admission is �20; �5 for children under 14, under fives free; a family ticket (two adults and two children) is �45.

Car parking is free.