New custom atom exhaust system the stock atom exhaust system is known to be fairly restrictive and quiet, having been designed to satisfy a host of noise ordinances, especially in the uk Owners have also found that the stock internals have tended to deteriorate quickly. Multiple versions of the brammo ariel atom 2 owner's manuals exist This thread will attempt to archive as many as possible Here's to help out the community There are only 3 things that need to be changed in the atom if you step up to a 2.4l motor
1) the driver motor mount 2) the length of the test pipe 3) the tune this is because the k24 deck height is 3/4 taller than the k20s
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