The AIS / SMOG system feeds fresh air into the
exhaust to aid in the combustion of unburned fuel.
It was designed to improve emissions but will cause
problems with many aftermarket exhausts / mufflers.

Kit includes 2 x M12 cylinder head bungs
blanking cap for the airbox and caps
for the intake vacuum ports.

Fix exhaust popping & backfiring with aftermarket cans.
Achieve true A/F ratio for Autotune / mixture adjustment.
Improves throttle response &  smothes out power delivery.
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Fits the following:

2001-07 Bonneville 790 / 865
2002-07 Bonneville America 790 / 865
2003-04 Speedmaster 790 / 865
2006-07 Scrambler 865
2004-07 Thruxton 900
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