 
Exhaust Noise Test Data
(66KB PDF file) - This PDF file contains exhaust noise level (dB)
ratings for different model Suzuki dirt bikes with various
aftermarket exhaust systems. Please go to the California
State Parks Off-Highway Motor Vehicle Recreation Division
Website for the latest edition. Submitted by John Franger |
Measurement of Exhaust Sound Levels of Motorcycles
(40KB PDF file) - This SAE Standard establishes the test procedure,
environment, and instrumentation for determining the sound levels of
motorcycles under stationary conditions. By SAE Motorcycle Committee |
 Rim Lock / Bead Lock / Bead Stopper Installation - If the bulk of your
Suzuki Dual Sport riding takes place in the dirt, then it's very likely that
you've made the switch from the stock "semi-knob" tires to genuine, full knobbies
(DOT-approved, of course, if you still ride on the pavement at all).
But did you also install a rim lock? |
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 Suzuki DRZ400E Advanced Jetting - The DRZ400E and the DRZ400E/Kick
come standard with a Keihin FCR 39 flatside carburetor. It comes from Suzuki
jetted pretty lean though, and needs to be rejetted. First
thing you need to do is open up the airbox. Take off your seat and
pull the airbox restrictor. By Matt Nelson |
 Suzuki DRZ400S Upgrades -
The Suzuki DRZ400S is currently the
best dual purpose bike on the market. Stock I would say the
DRZ400S is suited for 75% dirt, 25% street. My goal was to
make it 95% dirt, 5% street. Fortunately, Suzuki has made
this conversion fairly simple. I said simple, not
cheap. By Matt Nelson |
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Rear
Axle Snail Cam Adjuster Mod - By Corky
