The Wilwood Forged Billet Dynalite Internal/ST has been specifically designed for high temperature road racing series compact cars. Teamed with Thermlock® insulated pistons, it gives a small size, high temperature solution for rotors in the 12.19” to 11.00” ranges. The Forged Dynalite are the strongest calipers in the class, Designed with a single split bridge and spacer less design to enhance strength and appearance.