Wilwood Superlite Internal Caliper - 3.5" Lug Mount - 1.38" Pistons, 1.25" Rotor Thickness Safety Wire They are powder-coated

They are powder-coated

FRP hand-laid composite structure built for strength and durability

1-3/8 in x 10 Spline

you'll need this new Controller to handle the ignition chores

Wilwood Superlite Internal Caliper - 3.5" Lug Mount - 1.38" Pistons, 1.25" Rotor Thickness Safety Wire They are powder-coatedThe Superlite caliper series is the benchmark in short track, late model, modified and open wheel competition. It also enjoys prominence in a variety of road race, off road, rally and sport driving applications. The new FSLI model series is the latest innovation to this Superlite family of calipers. It has been redesigned with internal fluid ports that eliminate the external fluid cross over tubes, along with any potential problems that could arise