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Caliper Repair Kits – Restore Braking Performance & Reliability
Caliper Repair Kits refresh tired brake calipers with new seals, dust boots, pistons and slider hardware. Rebuilding a sticking or leaking caliper restores even pad wear, firm pedal feel and braking confidence—vital for heavy 4x4s that tow or tour.
In this section: Browse all categories • Caliper Repair Kits – Quick Comparison • How to Choose & Rebuild • Related Sections • FAQ
What’s in a Typical Repair Kit?
- Piston Seals & Dust Boots: Replace hardened or torn rubber to stop leaks and dust ingress.
- Pistons (Stainless/Phenolic): New corrosion-resistant pistons to ensure smooth travel.
- Slider Pins & Bushes: Restore free movement on floating calipers for even pad wear.
- Bleed Screws & Caps: Fresh fittings to prevent air leaks and corrosion.
- Grease & Hardware: High-temp lubricant, clips and springs for a complete service.
Caliper Repair Kits – Quick Comparison
| Kit Type | Best For | Key Benefits | Considerations |
|---|---|---|---|
| Seal & Boot Set | Minor leaks/service | Stops fluid leaks, keeps dust out | Reuses existing pistons/pins |
| Seal + Pistons | Pitted or seized pistons | Smoother actuation, corrosion resistance | More labour; confirm piston material/size |
| Slider Hardware Kit | Uneven pad wear | Restores floating function | For floating calipers only |
| Complete Rebuild Kit | Full overhaul | All-in-one solution | Ensure platform-specific fitment |
How to Choose & Rebuild
- Identify caliper type: Floating vs fixed, piston count/diameter and seal profiles.
- Inspect wear: Look for piston pitting, torn boots, leaking seals and seized sliders.
- Select kit scope: Minor service (seals/boots) vs full pistons + sliders for heavy corrosion or uneven wear.
- Finish the system: Use fresh fluid and consider brake lines, new pads and clean discs.
Example: A sticking front caliper on a touring wagon gets a complete rebuild kit with stainless pistons and new sliders, plus a fluid flush and braided lines for a firmer pedal.
Fitment & Compatibility Guide
- Dimensions: Match piston diameters and seal profiles exactly to your caliper model.
- Surface prep: Clean bores thoroughly; remove rust without scoring the caliper.
- Lubricants: Use brake-specific, high-temp greases on sliders and seals.
- Bleeding & bedding: Bleed thoroughly and re-bed pads to stabilise friction after rebuild.
Upgrade Sequence Roadmap
| Stage | Focus Area | Why It Matters |
|---|---|---|
| 1 | Diagnosis & Strip | Confirm sticking/leaks; disassemble and inspect components. |
| 2 | Rebuild Kit Install | New seals, pistons and sliders restore function and safety. |
| 3 | Lines & Fluid | Replace aged hoses and bleed with fresh DOT 4/5.1. |
| 4 | Pads & Discs | Fit quality friction parts and bed in properly. |
Related Sections
Frequently Asked Questions
- When should I rebuild a caliper instead of replacing it?
- If the caliper body is sound (no cracks/major wear) and bores clean up well, a rebuild is cost-effective and reliable.
- Do I need to replace pistons during a rebuild?
- Only if pitted, corroded or out-of-round. Many kits include new stainless or phenolic pistons for longevity.
- My caliper sticks on one side—what’s the cause?
- Commonly seized slider pins or swollen seals. A slider hardware kit with proper high-temp grease usually solves it.
- Can I rebuild multi-piston fixed calipers at home?
- Yes with care and correct tools. Keep pistons oriented, replace all seals and bleed thoroughly.
- Do you ship caliper repair kits across Europe?
- Yes. OFM4x4 supplies and ships caliper repair kits and hardware throughout the UK and Europe, with local stock options for faster delivery.
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