HMRC Race Class Information

(Download a simplified class structure document here)

National Endurance Series

Superproduction 1000

4 cylinder over 600cc to 1000cc

3 cylinder over 750cc to 1000cc

2 cylinder over 850cc to 1200cc

Number plates: White background, Black Numbers

Basically Superbikes may be used.

The engine may be tuned or modified but the frame must remain as standard. Any other modifications such as quick release wheels may be made. All electrical parts may be changed.

Slick tyres may be used of any size.

Quick filler systems are encouraged.

Superstock 1000

4 cylinder over 600cc to 1000cc

3 cylinder over 750cc to 1000cc

2 cylinder over 850cc to 1200cc

Number plates: Red background, White numbers

Basically to MCRCB Superstock Regulation

The engine must remain as standard other than that allowed by superstock or HMRC regulations, this is head gaskets can be changed etc. Frame and chassis must be as original.

Treaded tyres must be used

Electrical systems must remain unchanged

Quick release wheels are not allowed and must remain as standard.

Supersport 600

4 cylinder over 400cc to 600cc

3 cylinder over 600cc to 675cc

2 cylinder over 600cc to 750cc

Number plates: White background, Blue numbers

Basically to MCRCB Supersport regulations

Slick tyres may be used

Superstock 600

4 cylinder over 400cc to 600cc

3 cylinder over 600cc to 675cc

2 cylinder over 600cc to 750cc

Number plates: White background, Red numbers

Basically to MCRCB Superstock regulations but limited to the capacities above

Slick tyres may not be used

Junior TAG Endurance Series

Junior 1000cc

4 cylinder over 600cc to 1000cc

3 cylinder over 750cc to 1000cc

2 cylinder over 850cc to 1200cc

Number plates: Red background, White Numbers

Any engine tuning is allowed and the original frame and crankcases must be used. Anything goes as long as the bikes conform to the current ACU regulations and the HMRC Technical and Sporting Codes.

Slick tyres may not be used, wets are ok

Junior 600cc

4 cylinder over 400cc to 600cc

3 cylinder over 600cc to 675cc

2 cylinder over 600cc to 750cc

Number plates: White background, Blue numbers

Any engine tuning is allowed and the original frame and crankcases must be used. Anything goes as long as the bikes conform to the current ACU regulations and the HMRC Technical and Sporting Codes.

Slick tyres may not be used, wets are ok

General Information

A minimum of 2 bikes and 2 riders in required for this championship. 3 bikes and 3 riders are allowed.

1 bike is not allowed as refueling during the race is not allowed

The transponder is taken from 1 bike and put on the other at the pit stop.

Maximum riding time is 30 minutes per rider with a 15 minute break before that rider is allowed to return to racing