Miata 1.8 NB Adjustable timing wheel. Spec Miata, Autocross, Track Car, MX5

Miata 1.8 NB Adjustable timing wheel. Spec Miata, Autocross, Track Car, MX5 This is what I use to adjust my timing on all of my NB1 Spec Miata's. Very easy to use with great performance added.