This is a spec class for 40cc pocket bikes. No changes to how the bike was manufactured other than listed below are allowed.

1 External gear changes allowed.

2 Aftermarket tires are allowed.

3 Aftermarket reeds are allowed (no changes to reed cage are allowed).

4 Chinese pocket bikes may be modified with no restrictions except that the original engine cases and chassis must be retained.

This class is open to expert riders and intermediate riders only at the discretion of the CNMRA. This is an open class for 50cc pocket bikes.

1 Limited to 50cc.

2 No restrictions on modifications.