Graves Motorsports’Reducing Bung -18×1.5mm to 12×1.25mm Stainless Steel. Used to convert race 02 sensor size from 18.5 x 1.5mm to 12 x 1.25mm. This allow the use of the OEM 02 sensor on most motorcycles. Please verify you need a 12mm setup before the purchase.
Pre-drilled to accept safety wire.
Fitment: Multi