ECS Tuning Universal Brake Caliper Slider Pin & Bronze Guide Bushings Upgrade Kit – 304 Stainless Pins Install/Repair Set for Sliding Calipers – Improves Pedal Feel, Fixes Spongy Pedal, Reduces Pad Taper – Track Day/Performance Braking

Transform pedal feel and consistency with a bronze slider bush upgrade that replaces the soft OE rubber sliders. If you are chasing firmer bite, even pad contact and repeatable stopping power for fast road or track day use, this stainless pin and bronze bush kit is the proven fix for spongy pedals, pad taper and rotor hotspots.

Crafted from premium materials for durability and low friction, this upgrade swaps compliant factory rubber for C544 bronze sleeves working on tightly toleranced 304 stainless pins. The result is reduced caliper flex, more stable pad alignment and smooth, precise caliper movement under load. An internal o‑ring and heat resistant dust cap seal the assembly from road grime and moisture, while the outer surface of the bushes is textured for a secure light press fit across a broad range of sliding calipers. A Spirolox retaining ring provides positive retention in the caliper body.

We use this kit on our own builds and our customers consistently report sharper pedal response, improved modulation and noticeably more even pad wear. Perfect for performance driving, daily commuting or anyone fed up with uneven pads and inconsistent braking.

• C544 bronze slider bushes for long service life and low friction movement
• 304 stainless guide pins machined to tight tolerances for precise control
• Sealed both ends with an internal o‑ring and robust cap to keep lubricant cleaner for longer
• Textured outer surface for a confident light interference fit in many sliding calipers
• Spirolox retaining ring for secure location in the caliper
• Heat resistant sealing components rated to 600 F
• Promotes even pad contact, better modulation and a firmer, more confidence‑inspiring pedal
• Helps reduce pad taper, rotor deposits and slider stick‑slip

Why choose this slider pin and bush kit

• Real performance hardware upgrade without changing discs or pads
• Ideal for track day cars, fast road builds and daily drivers wanting reliable braking
• Long lasting materials that resist wear, corrosion and heat

Fitting and support
Professional installation recommended. For fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Note
On some BMW and MINI calipers you may see a small gap between the caliper body and the retaining ring. This variation is normal and does not affect operation.

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