i want to get a rev box for my 05 Honda Trx450r. At Motosport there are two i was lookin at.

http://www.motosport.com/offro...dId=925047&nav=&sMMY=


or

http://www.motosport.com/offro...dId=925039&nav=&sMMY=


What is the difference between the 2? Is it worth the extra money for the more expensive one? Will one of these make me go alot faster?

Thanks

 

I'm not a fan of Big Gun, but they will make a noticeable difference on the Top End because it raises the Rev Limiter and it also advances the timing to add a little more power at mid-high range. The difference between the two is the timing curve and the higher RPM's by the second one (hi-rev). Which allows for you to wind out the gears more and acheive a broader power band than the cheaper one. I personally went with the DynaTek box ($175), and noticed a significant difference, but I also did all of my motor work as well to go with it, so I had a drastic increase in power and a higher rev limit as well. I also do not recommend the Hi-Rev box unless you are going to make some other improvements internally (a cam, jetting, aftermarket full pipe, port and polish, something along those lines).