Throughout 2006, California has been testing the noise of exhausts on 4-wheeler's. The good news about this testing is that approximately 90% of all vehicles, 4-wheeler's included, are in compliance with these laws. California 4-wheeler riders had the chance to prove that their vehicles were in compliance with this law via the SAN-sponsored law, which allows 4-wheeler riders to prove their compliance.
What this has done is proven that law enforcement regarding 4-wheeler riders noisy exhausts has been in error. Because of this, courts have been forced to dismiss citations that were issued for what were formerly considered "loud" 4-wheeler exhausts. However, only 4-wheeler riders who had been issued citations were allowed to take part in this test.
Most 4-wheeler riders that have performed modifications on their 4-wheelers have more of a preference for exhaust systems which are after market. Due to this testing process, consumers who do choose to upgrade their 4-wheelers are at an advantage.
Currently there is no cost for performing this test. If you are a 4-wheeler rider who has been cited, there is a toll free number available for you to call: 800-622-7733. When you call, please have the citation and vehicle registration information handy.
For more information regarding your specific 4-wheeler And what noise regulations apply to your 4-wheeler, check out the website at: ohv.parks.ca.gov. (Please note: the only tests that are included, are those that have A 101 dBa or less. Each list is set up by make, model, and year.) Exclusion of a model doesn't mean it failed to meet any standards for emissions, it merely means it wasn't included in the test.
