CORSE DYNAMICS Smog Blockoff Plates: Ducati 1199 / 899 Panigale This set of block off plates safely blocks and seals off the two air injection ports on the Panigale This will eliminate back firing on deceleration and enable accurate air-to-fuel ratio measurement on a dyno or when using a wide band o2 sensor. This block off kit is for off road use only as this is removing the PAIR system from the bike which assists in burning unused fuel. 2 black anodized aluminum block off plates (one for the vertical cylinder & one for the horizontal cylinder)