MY 05TRX450R:
HIGH COMP PISTON 13:1
DAIL-A-JET
LRD FULL EXHAUST
REMOVED AIR BOX LID W/ K&N FILTER
HOT CAM STAGE 2
13T FRONT SPROCKET
ALBA RACE CDI 1,000RPM OVER STOCK

FRINENDS 06TRX450R
HIGH COMP PISTON 13:1
HRC KIT STAGE 1 CAM

WE RACED TODAY AND I WAS BEARLY ABLE TO PULL FROM THE 06 450R AND AT TIMES THE 06 WOULD BEAT ME NOT BY MUCH BUT I WOULD THINK THAT MY 05TRX450R WOULD BE ABLE TO BEAT HIM WITH A LITTLE MORE PRIDE.HAHA WE ARE BOTH AT ABOUT THE SAME RIDING SKILL. IS THE 06 450R REALLY THAT MUCH BETTER THAN THE 05 AND WHAT WOULD I NEED TO DO TO MY 05 IN ORDER TO BEAT AN 06 WITH HRC KIT???
OR CAN ANYONE TELL ME ABOUT THEIR EXPERIENCES IN THIS SIMIAL TOPIC.

 

I think the '06 and '07's are just that much more powerful.
I have an '04 with an Athena 480 kit, 10.7:1 piston, Hotcams Stage II, ported and polished head, 185 main jet, 50 pilot and I dropped the clip on the needle 4 spots. I have an FMF Q2 slip on, a Uni filter and a cut open airbox (HRC style)
I have yet to race an '06 or '07 but my friend just bought an '06 last week, so I will get my chance.