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Smog Block Off Plates for Aprilia RS457 + Tuono models. Designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps or AIS). 


Sold as 1 plate shown and 1 cap. This product is intended for closed course competition use only. Use of this product for any other purpose is strictly prohibited.

Aprilia RS457 / Tuono Smog Block Off Plates

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