Take-off Harley Twin cylinders and heads from a 2010 Road Glide, stock 96" factory parts. Taken off for a Screamin' Eagle kit when the bike was new, black wrinkle (hardly any miles, whatever they run the motor for?). Has a set of pistons included but I'm not sure if those came with this set. (good set of stock pistons either way). Includes the studs. HD#s 17721-08, and 17179-06 (heads), 17458-07 cylinders. These parts are in the Screamin' Eagle boxes (with dates from back when this bike was new), Fits 2007-up Twin cams (these were from a 2010 Road Glide)I also have another set of take-off silver cylinders and pistons, and the rocker arms, cams, throttle body and other misc parts from this set...$225 set, Rich show contact info