FFG 1967-79 F100 Wilwood Master Cylinder Kit
The same master cylinder setup we bolt into our own builds. Add disc brakes; bigger wheels and a Coyote and the factory single circuit system is suddenly the weakest thing on the truck. It was marginal in 1972. It is not acceptable now. This is a Wilwood tandem master with a 1 inch bore on a Tuff Stuff dual diaphragm booster; with the firewall plate; grommet; pushrod and every bracket you need. Nobody saved those brackets from the seventies. Ride height picks the booster. Stock height or a mild drop takes the 8 inch. Anything past four inches - Level 2; air ride; a serious slam - takes the 7 inch with the shortened pushrod so it clears the valve covers and the inner fender. The result is a firm pedal that stays where you put your foot. That is the part you notice on the first panic stop rather than on install day.
Install Level: Intermediate - brake system; firewall mounting; line work and bleeding
Not included in the base kit: the Wilwood adjustable proportioning valve kit. It is a paid option at checkout.
Not included: brake lines; fittings; residual valves and brake fluid.
Booster choice: 8 inch for stock height and drops up to 4 inches; 7 inch for trucks lowered more than 4 inches.
FFG Wilwood Master Cylinder Kit - The Same Setup We Trust in Our Shop Builds
When you upgrade to disc brakes, bigger wheels, or more power, your stopping system needs to keep pace. This isn't just another master cylinder kit – it's the exact setup we install on our own shop builds because we know it delivers the pedal feel and stopping confidence your classic Ford deserves.
Built for Real-World Performance
Whether you're running a stock-height daily driver or a dropped show truck, this kit adapts to your build. The clean, bolt-in design eliminates the guesswork while giving you that firm, responsive pedal feel that makes every stop feel controlled and confident.
Lowered Truck? We've Got You Covered
Running a serious drop or air ride? The 7" booster option with shortened pushrod clears tight engine bays without fighting valve covers or other components. No compromises, no interference – just clean fitment that works with your vision.
Choose Your Booster Size
• 8" Booster – Perfect for stock height and mild drops
• 7" Booster – Essential for trucks dropped more than 4" (Level 2 drops, air ride, serious slams)
Everything You Need for a Complete Install
• Wilwood Tandem Master Cylinder with 1" bore and lightweight die-cast construction
• Tuff Stuff Dual Diaphragm Booster (7" or 8" – your choice)
• FFG Custom Pushrod (standard or shortened for lowered applications)
• Firewall plate and grommet for that clean, sealed finish
• Complete mounting brackets (because nobody saved those from the '70s)
Take It Further
Add the Wilwood Adjustable Proportioning Valve Kit for disc/disc or mixed brake setups. Fine-tune your brake bias for maximum stopping performance and pedal feel.
Fits: 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979 Ford F-Series ½-ton and ¾-ton trucks
Fits: 1978, 1979 Ford Bronco
Vendor: Fat Fender Garage
Master cylinder: Wilwood tandem; 1 inch bore; lightweight die cast body
Booster: Tuff Stuff dual diaphragm; 7 inch or 8 inch
Pushrod: FFG custom; standard or shortened for lowered applications
Included: firewall plate and grommet
Included: complete mounting brackets
Colour options: raw-metal and black-1
Proportioning valve: Wilwood adjustable kit available as a paid option for disc/disc or mixed systems
Booster sizing: 8 inch for stock height and drops to 4 inches; 7 inch for drops beyond 4 inches including Level 2 and air ride
Variant count: 13
Listed price 715.99 USD for the raw metal; no proportioning valve; 8 inch booster build
Fits 1978-1979 Ford Bronco.
Booster size is chosen by ride height: 8 inch for stock height and drops up to 4 inches; 7 inch for drops beyond that.
