They are in business, still but in big trouble apparantly and really struggling with workload that is affecting their customer service big time. They are currently not operating to their usuall high standards which have dropped considerably. There are several threads on them on some USA sites. Thumper talk is one i think and it is best you read those. I would avoid placing an online order with them and You are unlikely to hear from them. From what i have read, they have a huge amount of back log of work and they are kinda over whelmed by it all and its just 2 guys and the girl in the office trying get through it all. i think the GFC has had a big affect on them by the sounds of it and everyone is hoping they can pull through it as they are te only experts ding this sort of stuff at a high quality with years of experience. I wanted to place an order for a XL250 stroker crank with them but are going to hold off for 6 months a year? till their communication and customer service picks up because currently a huge amount of emails are going unanswered (worldwide), and you cant even get through to them by phone. The only way i have known people to get incontact with them in recent times is via a secret phone number direct into the workshop, that the public is not supposed to know.
Just one the XR75's, there is a XR75 specialist in USA that has NOS Lockhart Oil coolers for XR75's.