Just thought I'd let everyone know how bad Speed pros customer service is. I bought a set of Hellfire rings a few weeks back and when I went to fit the rings one of the second rings was broke. Didn't find it till I was on number 6. so I call to see about getting a replacement and find out they won't sell a single ring but they have a part number on it RBT-101805(no single cylinder set also) now mind you the ring was broke before I did anything to it but I figure to make things easy I would just buy it. They say I have to buy a complete set of seconds and delivery may take 10 weeks at a cost of $64.00. They tell me if I take back to the speed shop I bought it from they can send it in for evaluation and if they determine it was defective they will replace it in anywhere between 2 and 6 weeks. Okay rant over.