StopTech 121.33076 SportStop Plain Brake Rotor

The StopTech 121.33076 is a SportStop plain brake rotor engineered as a direct OE-quality replacement for factory disc brake systems. Part of StopTech's 121-series smooth rotor line, this rotor delivers consistent, reliable stopping performance using high-grade cast iron metallurgy developed from StopTech's motorsport experience.

Key Features:

• Direct OE Replacement – Designed to fit factory brake calipers and hardware with no modifications required
• High-Carbon Metallurgy – Increased carbon content improves thermal stability, reduces noise, vibration, and harshness (NVH), and extends rotor service life
• Double Disc Ground – Precision-machined friction surfaces ensure consistent pad contact and promote proper pad bed-in
• Mill Balanced – Each rotor is mill balanced to minimize vibration and pedal pulsation
• Black E-Coat Finish – Non-friction surfaces are coated with black electrophoretic coating to resist corrosion and improve appearance
• Plain Smooth Surface – Optimized for street driving where consistent, quiet, and fade-resistant braking is the priority

StopTech's SportStop plain rotors are manufactured from premium raw castings sourced from a foundry with over a century of experience, then CNC-machined and finished at StopTech's California facility. The result is a rotor that meets or exceeds OEM standards in fit, form, and function — making it an ideal choice for drivers seeking a quality brake upgrade or replacement.