Stock vs. aftermarket
Posted March 13, 2010 - 09:40 PM
Posted March 15, 2010 - 07:41 PM
i did megabomb + q4 and i love it. also very quiet for those of us in overly regulated Cali
Posted March 16, 2010 - 12:29 AM
There is little improvement to be gained by simply fitting an insert.
The rest of the muffler restricts flow too much.
If you're on a budget then open the muffler up properly and fit an insert for reasonable power improvement. Add a YZ450F header for full-blown version!
I have ridden, back-to-back, identical (apart from the exhaust) WR450Fs and I can categorically state that a properly modified, stock muffler, coupled to a YZ450F header performs as well, if not better than a (very loud) "Race" White Bros full system.
In summary: if you have heaps of money and like to waste it then buy an exhaust.
If not then do the mods.
Check this out and you'll see what I mean.... http://www.thumperta... saves big $$$$