The PAIR / 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.

Plates are machined from billet aluminium.
Stainless steel bolts & washers, plus a
high temp. rubber airbox cap is supplied.

Also includes a PAIR valve eliminator plug, to
fool the ECU into thinking it is still connected
& prevent it from throwing up an error code.

Fixes exhaust popping & backfiring with aftermarket cans.
Achieve true A/F ratio for Autotune/mixture adjustment.
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Fits the following:

2019 CRF450L/RL
2019 CRF450X
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