Honda Pilot FL400R Master Brake Cylinder Rebuild Service
Rebuild Service & Core Inspection Policy:
- Service Turnaround Time: Professional rebuild service typically requires 2 to 4 weeks from the date your core is received at our facility, depending on current workshop volume.
- Customer-Supplied Core Required: This is a service to rebuild your existing unit; you must securely package and ship your worn OEM FL400R master cylinder to us.
- Core Usability & Inspection: Your master cylinder body must be physically rebuildable. Upon arrival, we perform a thorough inspection of the internal bore and casting. If excessive internal gouging, cracked mounting ears, or irreparable pitting make the casting unserviceable, we will return the cylinder to you and refund your purchase price minus the cost of return shipping.
- Vehicle Compatibility: Applies specifically to the OEM master brake cylinder assembly on the 1989–1990 Honda Pilot FL400R.
Honda Pilot FL400R Master Brake Cylinder Rebuild Service
On a high-performance machine like the Honda Pilot FL400R, a crisp, trustworthy hydraulic brake system is vital for trail safety. After more than three decades of exposure to moisture-laden brake fluid and dirt, factory master brake cylinders frequently suffer from degraded internal piston cups, corroded return springs, swollen rubber seals, and contaminated fluid ports. These issues cause spongy lever feel, fluid weeping around the pushrod, stuck brake calipers, or total loss of hydraulic clamping pressure.
Our Professional FL400R Master Brake Cylinder Rebuild Service restores your original vintage equipment to reliable, like-new operating condition. Rather than risking fitment or pressure-ratio mismatches with generic universal aftermarket masters, this service preserves your original casting, reservoir geometry, and hand-lever engagement while renewing all critical internal wear surfaces and seals.
What the Service Includes:
- Complete Teardown & Ultrasonic Cleaning: Thorough disassembly of the entire master cylinder body, removing baked-on brake sludge, varnish, and corrosion.
- Precision Bore Inspection & Honing: Micro-polishing and honing of the cylinder bore to restore a smooth, continuous hydraulic sealing surface.
- Fresh Internal Hardware & Seals: Replacement of internal components with fresh, brake-fluid-resistant primary and secondary piston seals, dust boots, and return springs.
- Port & Orifice Verification: Clearing and micro-cleaning of the compensating and bypass ports to ensure fluid returns freely without dragging pads.
- Pressure & Leak Testing: Bench-tested prior to return shipping to verify complete pressure holding and zero external fluid weeping.
- Preserves OEM Fit & Yoke Clearance: Maintains your authentic Honda steering yoke controls, parking brake mechanisms, and factory brake switch wiring.
| Origin | Aftermarket |
|---|---|
| Condition | Rebuilt |
| ATV Make | Honda |
| ATV Model | FL400R, FL400R - Rotax |
| Height | 6 |
| Width | 6 |
| Depth | 6 |









