The original set that are low RPM running...They actually suprised me and worked very well on my 92 750..If they could be updated you have something better...Looking for $350.00 and we will figure shipping out later...
Not sure about the 800...But as far as specs I used my own..I only used these pipes for ice racing..For trail riding I could figure out what you would need..I do have all the hardware..
