Sold out Out of stock Graves Motorsports Smog Block Off Plates for Honda CBR model Sport Bikes Graves Motorsports Smog Block Off Plates for Honda CBR model Sport Bikes. Graves Motorsports Smog Block Off Plates are designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps or AIS). Sold in pairs (... $43.95 Out of stock
