Write a list of what you will do for the sponsors and also how they will benefit from that.
Make it out so that they are gaining something (bargain price publicity), not loosing something (cash).
I used this approach and became a fully sponsored rider for 2 years. Then used this same system again and was fully sponsored to race a hill climb car for a year.
Thanks Biker. Ill give it a go. the hardest part is finding the right contacts I think.Like you can find gas gas uk from there website but that isnt really the right place to contact about sponsorship is it ? Local dealers that buy in the bikes new i suppose