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Laguna Seca (90 or 92dB): Aftermarket pipes are prohibited unless they have commercially-made quiet baffles ("dB killers", etc.). See full information here.
Laguna enforces a dB limit regardless of the originality of a DOT-approved bike. There is no guarantee even a stock bike will pass sound. The onus to pass the sound testing every lap is on the rider and we are unable to tell you in advance whether your bike will pass.
Every bike needs a two or three digit number (on the front and right side) six inches tall. Duck tape is fine.
Sonoma Raceway and Thunderhill (103dB): Tolerance for noise should not be a problem unless your exhaust system is defective. Bikes don't need numbers.
|Lap time guidelines|
(CW, config #13)
|A Group||Under 2:15||Under 2:11||Under 2:02||Under 1:50|
|B+ Group||2:10 - 2:25||2:08 - 2:20||2:00 - 2:13||1:48 - 2:00|
|B- Group||2:25 - 2:45||2:20 - 2:45||2:13 - 2:35||2:00 - 2:30|
Novice schools are for experienced street riders and moderately experienced track riders looking for significant personal instruction in a school format. No track experience is required. Click here for more information.
Intermediate schools are for non-novice, A and B+ group riders. The curriculum is advanced and the focus is on becoming a faster, safer, more capable rider.