This chassis was designed by CRG for the Rotax engine and Mojo D1 tires. It is imported by PSL in Canada (where I purchased it). It is very fast and extremely easy to set up. It would also be very well suited to Rotax Minimax (which requires a full size chassis from next year on. The wheelbase can be adjusted by selection of different bearing carriers. It has Sniper castor camber adjusters which are the best you can get for set up. It is in very good condition, I have always used frame protectors on the underside, though there is a small amount of wear (very minimal).
I paid almost $5,000 for this 5 months ago but will sell for $3,250. I have photos available, please email and I will send.