There are may types of scooter clamps on the market and which clamp you choose will depend on the compression that you use on your stunt scooter. In general there are two sizes to clamps with 31.8mm being smaller and 34.9mm being larger. The 34.9mm scooter clamps are fitted to oversied scooter bars which can be HIC bars on aluminium bars and the 31.8mm clamps generally fit to standard sized bars.
SCS clamps are different as they require some alteration to scooter bars with the slit being removed or a bar adaptar being used, and normal collar clamps with work with people using IHC and HIC compressions. You will need to know the size of the scooter bars you have to know what size stunt scooter clamp to use.
Our customer service lines are always open at Ripped Knees sco just call uf if you require any help on 0191 260 2534.