Not much Yamaha left on the bike it full custom front to rear. 240 rear tire and swing arm swap. R1 front end with dual disc brakes. Fuel injection with power commander tuner and cams. Aftermarket hoses, cables , forward controls, exhaust, bars and rims. Bike is 1700cc with 7300 miles on it. This thing sounds awesome better than any Harley Davidson I've herd and you will not sneak around on this beast it's loud. May consider trades BBC engines turbo 400 trans.. anything drag racing related as I'm build a 71 Nova.