Penske BLUE bump rubber (stiffest). 60mm length. Sold individually. Penske bumpstops have the most linear rate through their compression.
We use two of these bumpstops per rear shock in our CS autocross 2019 ND (with one cut down to make a combined length that matches the factory bumpstop length).
MIATA NA/NB 1990-2005 · 17x7
MIATA NA/NB 1990-2005 · 17x7
MIATA NA/NB 1990-2005
MIATA NA/NB 1990-2005