what is his pipes like he's got one for the 450 that looks good i was wondering how the raptor one performs compared to a ct pipe.

here is the little wright up from atv scene

The first aftermarket pipe for the YFZ - The Sparks Racing X-6 Exhaust Kit

Here's some YFZ history that we're a little more sure of. Sparks Racing becomes the first aftermark pipe builder to have their pipe product ready for retail. Sparks Racing tested the YFZ on their Dynojet Dyno. In stock form they claim it put out 37 peak hp. With their new Sparks Racing X-6 Exhaust Kit, air filter kit, jet kit, and Sparks cam mods they boasted the mighty YFZ to 47 peak hp. Their biggest hp gain was on the upper end, which netted a 11.5 hp gain over the stocker. Sparks says the power was also much broader than the stock system. In riding the quad with these simple mods Curtis himself said, "it's awesome! The gain was really shocking and we are very excited about the future of this Yamaha!

 

From my experiences their is nothing better than a curtis sparks. They help tremendously throughout the whole powerband.

 

I have the X-6 and love it ! I tried 6 full pipe systems and this by far is the best over all!


Pat

 

Just got mine the other day, sounds great and have seen the YFZ pipe on and it looks and sounds awesome!!

 

I was completely baffled by the difference in performance. I raced a stock YFZ 450 at pismo this
weekend and I easly beat him by 8 bike lenghts ( give or take).

 

Thats good to hear, actually I could have bet on that one. This bike is going to be the next generation for mx tracks.

 

well sparks be bringing one to 4swIII,that's the question..

 

From what I got from him, Not, He can just build a faster Raptor.