HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
billygildark5007

Spark arrestor?

3 posts in this topic

I have a yoshi rs4 full system on a 2011 yz45o with the arrestor factory installed. My question is will I really gain any horsepower or torque by removing it? Or just a louder bike? I would like to believe it was engineered for peak performance the way it is. But people have told me otherwise. (Not really trustworthy sources) I ride %95 percent mx tracks so I really don't need it forest approved.

Share this post


Link to post
Share on other sites

The spark arrestor in my DRD stainless system has no noticeable effect on either power or noise in my '06.  I leave it in all the time, as it's a requirement for desert racing, and I find very few bikes I can't pull on a flat, given an even start.

Share this post


Link to post
Share on other sites

Thanks for you response. I've learned about the back pressure myth and thought it would be better velocity with it in. My 04 yz450 with white bros carbon pro was obnoxiously loud. Now I kinda like being able to creep up on guys....

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0