These Origin-8 rings come in up to 56T in 130BCD. They are listed as 8, 9, 10 speed compatible. I have a 50/38T on my Burley. They were a perfect fit on the stock Sugino square taper crank arms.
I upgraded my 8 speed bar ends/LX FD/XT RD to 5500 series (9 speed) STI/105 FD/105 RD. The bike shifts great front and rear.
My Sugino's are 110mm BCD not 130mm
