What's up with this rubber sleeve thing on my brake caliper slide pin (the left one)? That one was REALLY stuck while the one without it was pretty smooth. : r/MechanicAdvice
How to Check and Lubricate Brake Caliper Slider Pins | AnthonyJ350 - YouTube
Resolving Brake Caliper Sticking - eBay Motors Blog
Brake Caliper Slide Pins (info on which goes on top) - YouTube