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Starting at $25.95, AutoBuffy stocks 1 disc brake caliper pins from URO to fit the Bmw 335I Xdrive. Caliper pins are hardened steel bolts that guide the caliper as it clamps the brake pads against the rotor. When they seize or wear, the caliper can't slide freely, causing uneven pad wear, brake drag, and dangerously reduced stopping power.
Caliper pins look simple but differ in steel grade, coating, and whether they come pre-greased or as part of a hardware kit. The right choice depends on your driving environment, how often you service your brakes, and whether you're replacing pins alone or doing a full caliper rebuild. Matching the OE diameter and thread pitch to your Bmw 335I Xdrive is non-negotiable.
| Option | Best for | What you get |
|---|---|---|
| OE-Spec Replacement Pin | Daily drivers wanting a factory-equivalent fit | Correct diameter, length, and thread pitch; meets original material hardness spec |
| Hardware Kit (pins + boots + clips) | Full brake service or caliper rebuild | Complete set of pins, rubber slide boots, anti-rattle clips, and pre-packed grease in one box |
| Zinc-Coated or Chrome-Plated Pin | High-humidity, road-salt, or coastal climates | Rust-resistant coating extends service life significantly over bare steel pins |
| Performance / Stainless Steel Pin | Track days, towing, or high-heat applications | Higher-grade steel resists galling and corrosion under sustained heavy braking loads |
Remove the wheel, unbolt the caliper from its bracket, and slide the old pins out of the bracket bores. Clean the bores thoroughly with a wire brush to remove all rust and old grease before installing new pins. Apply a thin, even coat of caliper slide grease to the new pin shafts, press them in, and reassemble in reverse order — pumping the brake pedal firmly before moving the vehicle.