MxSponsor.cm?

I assume you're talking about MxSponsor.com
There are a few guys that post on here that are the actual owners of some of the companies listed on their site as sponsors.
Maybe they can chime in.....and give their 2cents.

I've used them for 2 or 3 years and they have been great. They make the sponsorship process extremely easy and the money saved easily outweighs the yearly membership fee.

the sponsorships I have gotten from that site have saved me thousands of dollars, no joke !! highly recommended

I used it when it very first started. Definitely helped out a bit, but in a lot of cases youd be better off finding a local shop that will give you dealer cost on stuff. as a novice/b rider that would be his best bet. If youre going to national lebel events youll get bigger cuts from MXsponsor.

A handful of well known companies use only mxsponsor.com for sponsorship. They are one of a handful of sites offering sponsorship and one of the best. They wouldn't be around with anything shady involved.

I highly recommend them, if you race a lot you will save a lot of money and develop relationships in the industry.

yep

Yes, I use them!