BOLT KIT

Keep your BMW or MINI stopping smoothly and quietly with the HELLA Brakes Bolt Kit / Disc Brake Rotor (manufacturer part number 355122641). This front, internally vented disc installs as a direct-fit replacement for the 2016-2022 BMW X1, 2017-2024 MINI Cooper Countryman, 2018-2023 BMW X2, 2020-2024 BMW 228i xDrive Gran Coupe, and 2021-2024 BMW 228i Gran Coupe (all engines). It's cataloged under both "Bolt Kit" and "Disc Brake Rotor," so you may see it listed under either name.

• High-carbon gray cast iron: high carbon content aids heat dissipation, while 'soft' casting material helps dampen noise and vibration.
• Full zinc coating: guards the disc and hat surfaces against corrosion.
• Ready to install: ships with a non-oiled surface, so no degreasing is needed before fitting, and includes fixing screws.
• Not included: ABS tone ring, wheel hub, wheel studs, and wheel bearings are not supplied.

Built to meet OEM standards and ECE R90-ready, this rotor measures 330 mm (12.99 in) in outside diameter with a 24 mm nominal thickness and a 22.4 mm minimum (discard) thickness. It mounts with 6 bolt holes on a 112 mm circle around a 67 mm center bore, and its smooth, non-directional braking surface can be fitted to either side. Each rotor is mill-balanced and full-cast from gray cast iron. Country of origin: China.

The listed applications use two front rotors (one per side). This rotor is sold individually, so order two and replace both sides together as a matched pair for even, balanced braking. If worn or warped rotors are the cause of pulsation, noise, or reduced braking, replacing them can help address it — diagnose the cause first, since these symptoms can have other sources. Manufacturer part number 355122641.