B&B DRZ400 Muffler Insert
DRZ400 Muffler Insert
Our baffle was designed to replace the stock insert. The baffle produces a nice note compared to the derestricted stock version and dyno test results showed an increase on 2 hp up top.
A noise test on the insert was conducted at the EPA Victoria Vehicle Test Station at Macleod under controlled conditions with Class 1 meters.
|B&B OFF ROAD ENGINEERING|
|ADR Signature dB(A) & test RPM||ADR tess with B&B Tip|
|Suzuki DRZ 400||93 dB(A) @ 3375 RPM||97 dB(A) @ 3375 RPM|
Some extra details:
- The ADR test is conducted at an engine speed which is 50% of the engine rpm at which the engine develops maximum power. However, this engine speed is determined when the bike is in restricted form, with a throttle restrictor that stops the throttle being fully opened. This is why the ADR engine test speeds are so low. However, they are the engine speeds used to determine compliance.
- On the ADR test, the B&B tip was over the signature noise emission, but a tolerance of 5 dB(A) is allowed before prosecution would be initiated. With this tolerance, the insert would not be prosecuted as it is just 4 dB(A) over the signature.
- When tested with the standard OEM tips (as fitted when delivered from Suzuki Australia), the Suzuki came in at 95 dB(A) for the ADR test