Sean_McCutcheon 10 Posted June 7, 2004 Which spark arrestor end cap is the best for a YZ 450 stock pipe? Share this post Link to post Share on other sites
MXof21 14 Posted June 7, 2004 I used the Promoto spark arrestor and the quiet insert, worked great and I didn't even have to rejet. Share this post Link to post Share on other sites
426F 10 Posted June 8, 2004 same results with the pro moto as above Share this post Link to post Share on other sites
Sean_McCutcheon 10 Posted June 8, 2004 The Dr. D seems to be cheaper then the pro moto. Is there anything wrong with the Dr. D? Is there advantages or disadvantages to either one? Share this post Link to post Share on other sites
sirthumpalot 564 Posted June 8, 2004 I've sold both, they are very similar, so similar that I would think the performance would be identical. Share this post Link to post Share on other sites
MotoChris521 104 Posted June 8, 2004 I have the PMB on my 426,excellent fit & finish. Share this post Link to post Share on other sites
Fly-nBri 10 Posted June 8, 2004 PMB with no problems. Even asked them for extra bolts so I could tap out my own and they sent them with the kit. Share this post Link to post Share on other sites
Sean_McCutcheon 10 Posted June 9, 2004 Thanks Guys, I ordered the PMB. Share this post Link to post Share on other sites
