Sparks, or Yoshi?

[Martin Blair]

Well im getting a full system to replace the slipon this winter but can decide betwwen the two. I have heard good bout both. I race XC and need lowed-top power. I have heard that the sparks is more a mid-top pipe with no lowend, and the yshi pulls hard from bottom to top, reviews?

[twisted threads]

IM sure either one would work great. I have the Yoshi full system on my 450r..... I really like this pipe alot.

[Jersey450R]

i love my HMF slip on! cant imagine what the full system is like.

[trx450r_ryder]

i have the sparks and it is great way more bottom end than stock.
i also have sparks cam and air filter in mine 2, with a mild prot job
but sparks is very loud

[jeepnrocks]

Im getting the pulse charger the second its available :)

[Sportrax10]

If noise isnt a problem, go with the Sparks pipe for you 450r... :macho

[jeepnrocks]

the sparks is like 50 bucks more with the spark arrestor option isnt it. my buddy has a sparks and when we race next year i believe he is going to have to get it. Im not completely sure but i think its a disk system perhaps? anyone know ?