Big Bore FJ80 Brake Master Cylinder

Upgrade your brake performance with this genuine Toyota large-bore 1″ master cylinder, made in Japan by AISIN/Advics the OEM hydraulic manufacturer trusted by Toyota. Originally used on the 80-Series Land Cruiser, this master cylinder is a direct-fit upgrade for 1979–1995 Toyota Pickups and 4Runners, providing improved pedal feel and stopping power for upgraded braking systems.

Why Upgrade?
Factory 1979–1985 Toyota trucks and 4Runners came equipped with a smaller 7/8″ (22mm) master cylinder. While adequate for stock solid rotors and small 8″ rear drums, it struggles to maintain pedal height and firmness once you upgrade to larger brakes — such as vented front rotors, 4-piston calipers, or 10″ rear drums.
Installing this 1″ large-bore Land Cruiser master cylinder restores proper pedal travel and feel, ensuring confident braking performance with modern upgrades.

Features

Genuine Toyota OEM quality — manufactured in Japan by AISIN/Advics
Bolt-on fitment for 1979–1995 Toyota Pickups & 4Runners (minor hard line adjustment may be required depending on application).
1.00″ bore size delivers greater fluid volume for upgraded brake systems.
Works with both disc and drum setups — includes built-in residual valves for front and rear circuits.
Includes integrated reservoir with low-fluid warning sensor (connects to your factory brake warning lamp).
Improves pedal firmness and eliminates long pedal travel caused by mismatched brake upgrades.
Front and rear ports for easy installation:
- Front (furthest from booster) → Front brakes
- Rear (closest to booster) → Rear brakes

Installation Notes
This is a bolt-on upgrade for 1979–1995 4-cylinder Toyota trucks and 4Runners.
On some models, the stock hard lines may need gentle re-bending to align with the new ports. Works seamlessly with OEM brake boosters.

Applications

1979–1995 Toyota Pickup (Hilux)
1984–1995 Toyota 4Runner
FJ80 / FZJ80 / HDJ80 Land Cruiser (factory fitment)

Made in Japan — Genuine Toyota OEM Quality
Upgrade your classic Toyota with the stopping power it deserves — now at an unbeatable new price of $159 (was $259).

Weight	1.6
Dimensions	6.5 × 7.5 × 3 in

Make	Model	Year
Lexus	LX450	1996 - 1997
Toyota	4Runner	1984 - 1989
Toyota	Hilux/Pickup	1979 - 1983
Toyota	Hilux/Pickup	1984 - 1988
Toyota	Land Cruiser 80-series	1990 - 1997

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