10.5" its a 3 disc lock up and its a 3000 stall. I ran it for about 150 miles total. I had it restalled once and due to my cam the 3000 isn't high enough for me. I ended up going with at 9.5 and a higher stall. This would be great in a Daily Driver. I paid a little over 1100 for it and I want to get $800+shipping.