StopTech Racing Ultra-Lightweight .810" direct-mount rotors available slotted or plain with a curved vane or pillar vane design. These rotors are designed to bolt directly to the hub (ie - these rotors cannot utilize the floating rotor system).
StopTech's 16-plus curved vane rotors are some of the lightest on the market weighing in at just under 6lbs, while the pillar vane versions are approximately 8lbs.
For drivers that use more brake than typical, we generally recommend a pillar vane rotor for improved durability with higher temperatures.
Plain rotor face is required in IMCA classes other than late models.