StopTech Sport Slotted Rear Left Rotor with Cryogenic Treatment for BMW 330 Series

Description

Upgrade your BMW 330i or 330xi with the StopTech Sport Slotted Rear Left Rotor, part number 126.34057CSL. Designed for optimal performance and durability, this rotor features a split-core cast construction with symmetric vane design to ensure uniform heat distribution during braking. The black E-Coat anti-corrosive coating provides superior protection against rust and corrosion, significantly outperforming standard spray paint finishes. The double disc ground friction surface enhances braking consistency and extends service life, making it an ideal choice for enthusiasts and daily drivers alike.

This rotor is available with an optional cryogenic treatment, a one-time process that permanently improves the metal’s performance characteristics. Although invisible to the naked eye, cryogenic treatment can extend the rotor’s lifespan by reducing residual stresses and improving wear resistance. It also enhances the rotor’s resistance to thermal cracking, especially beneficial during high-stress driving conditions. The rotor’s design includes slots to help evacuate gasses, dust, and heat, contributing to increased initial bite and improved wet weather response.

Engineered as a direct OE replacement, the StopTech rotor is designed to fit specific BMW 330 models from 2001 through 2005, including 2001-2005 BMW 330i, 2000-2007 BMW 330Ci, and 2000-2005 BMW 330xi. All rotors are inspected for balance and mill-corrected to a tolerance of less than 2 ounces, ensuring smooth operation and reducing vibrations. Whether you are upgrading for performance or replacing worn components, this rotor delivers consistent friction performance, improved heat management, and long-lasting durability for your vehicle.

Features:

• Black E-Coated Non-Friction – Corrosion Protection

• Double Disk Ground For Consistent Friction Surface

• Superior Resistance To Cracks From Thermal Stress

• Directional Curve Vane Designs On Selected Applications

• Increased Initial Bite and Wet Weather Response

• Cryogenic Treatment Reduces Residual Stress

• Slots Help Evacuate Gases, Dust, and Heat

• Direct OE Replacement

Fitment:
BMW 330Ci Base 2001
BMW 330Ci Base 2002
BMW 330Ci Base 2003
BMW 330Ci Base 2004
BMW 330Ci Base 2005
BMW 330Ci Base 2006
BMW 330i Base 2001
BMW 330i Base 2002
BMW 330i Base 2003
BMW 330i Base 2004
BMW 330i Base 2005
BMW 330xi Base 2001
BMW 330xi Base 2002
BMW 330xi Base 2003
BMW 330xi Base 2004
BMW 330xi Base 2005