Dynamic Friction Company Disc Brake Rotor P/N:644-31114

Bring smooth, vibration-free stops to the rear axle with the Dynamic Friction brake rotor 644-31114, a GEOSPEC-coated, dimpled-and-slotted disc brake rotor from Dynamic Friction Company (DFC). It installs as a rear-axle replacement across a wide range of BMW models, including the 2021 230I, 230I xDrive, M240I and M240I xDrive, the 2014-2015 335I, the 2013-2015 335I xDrive and ActiveHybrid 3, the 2016-2018 340I and 340I xDrive, and the 2017-2020 430I and 440I — see the Buyer's Guide tab for the full list.

• CNC-machined: cut to tight tolerances and 100% precision cut and mill-balanced for smoother stopping and reduced vibration.
• Heat dissipation: matches the OE vane configuration to promote proper heat dissipation.
• GEOSPEC coating: provides corrosion protection beyond zinc and conventional painting.
• Non-directional finish: designed to promote faster break-in and smoother stops.
• Ready to install: no additional pre-degreasing preparation needed.

Engineered with premium G3000/G11H18 iron castings and designed to meet the same form, fit, and function as OEM brake rotors, it drops in without modification. Rotors wear as a pair, so replacing both rear rotors together is recommended for even, balanced braking. This listing is for one rotor; order two for a complete rear-axle set.