What Valves Do I Run

[jay 426]

HAVE AN 06 YFZ450 AND WE ARE BIULDING IT FOR B.I.D.T. RACING AND NEED TO KNOW WHAT VALVES TO RUN. THE STOCK VALVES OR STAINLESS STEEL VALVES. WHAT DO YOU RUN AND WHAT TYPE OF RACING DO YOU DO WE NEED IT TO BE RELIABLE

[Ride1Rob]

If you run stainless you'll need to go with stiffer springs because of the weight difference. They last longer (spec wise) than the Titanium valves but are more prone to break rather than bend. I haven't heard anything about the stainless breaking though. Either way, I don't think you can go wrong with either. What do you intend on doing to the motor?

[WOLFPACK]

Stay with the stock valves unless your going big bore.