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Classic Performance Street Beast Hydrastop Kit with Wilwood Black Master Cylinder 6474HBK-BSB-WWMCPVB

Classic Performance Street Beast Hydrastop Kit with Wilwood Black Master Cylinder 6474HBK-BSB-WWMCPVB
Classic Performance Street Beast Hydrastop Kit with Wilwood Black Master Cylinder 6474HBK-BSB-WWMCPVBClassic Performance Street Beast Hydrastop Kit with Wilwood Black Master Cylinder 6474HBK-BSB-WWMCPVBClassic Performance Street Beast Hydrastop Kit with Wilwood Black Master Cylinder 6474HBK-BSB-WWMCPVB
$1,810.99 ea
NEWARRIVING SOONEstimated Ship Date 07/24/2025 (If Ordered Today)
Model: 5013778
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
STANDARD
DELIVERY
STORE PICKUP
[More Info]
1964-72 A-Body, 67-69 F-Body, 68-74 X-Body, W/ Wilwood 1 1/8th Black Master and Valve, Booster comes with AN6 Fittings
6474HBK-BSB-WWMCPVB - Street Beast HydraStop Kit with Wilwood Black Master Cylinder for 64-72 A-Body, 67-69 F-Body, 68-74 X-Body

This Street Beast HydraStop Kit is designed for 64-72 A-Body, 67-69 F-Body, and 68-74 X-Body vehicles, featuring a high-performance hydraulic assist unit for superior braking. The kit includes a Wilwood 1 1/8" black master cylinder, adjustable proportioning valve, and all necessary hardware. The booster operates off your power steering pump, delivering up to 1800 psi at the wheels.

This direct mount assembly includes AN6 fittings for a straightforward installation and upgrades your braking system with modern hydraulic assist technology. Engineered for easy installation with minimal mechanical skill, this kit ensures exceptional performance with Wilwood’s premium components.
Kit Includes:
  • P/N: 6474HBK-BSB
    Description: 1964-72 A-Body, 67-69 F-Body, 68-74 X-Body, Booster comes with AN6 Fittings
    Quantity: 1-

  • P/N: 260-8556-BK
    Description: M/C, Tandem, 1 1/8 th Die Cast, Dual Outlet, Ball Burnish
    Quantity: 1-

  • P/N: 260-13190
    Description: P-Valve, Combo Proportioning w/Mounting Bracket, Left Hand
    Quantity: 1-

  • P/N: BP5100
    Description: CPP In White on the End of the Cover
    Quantity: 1-

Downloads:

Download Name File Size
HAHK-S_HAHK-R_Instructions.pdf1.69MB
HydraStop_Instruction_Sheet_1.13.pdf1.31MB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Buick Skylark 1964 - 1972
Buick Special 1964 - 1969
Chevrolet Camaro 1967 - 1969
Chevrolet Chevelle 1964 - 1972
Chevrolet Chevy II 1968
Chevrolet El Camino 1964 - 1972
Chevrolet Monte Carlo 1970 - 1972
Chevrolet Nova 1969 - 1974
Oldsmobile 442 1964 - 1971
Oldsmobile Cutlass 1964 - 1972
Oldsmobile Vista Cruiser 1964 - 1972
Pontiac Firebird 1967 - 1969
Pontiac GTO 1964 - 1972
Pontiac LeMans 1964 - 1972
Pontiac Tempest 1964 - 1970
Pontiac Ventura 1971 - 1974

Specifications:

Accumalator Cover Included Yes
Adjustable Yes
Bracket And Lines Included Yes
Brake Booster Finish Black
Brake Booster Included Yes
Brake Booster Type CPP HydraStop
Brake Light Switch Included Yes
Brake Pedal Extension Rod Included Yes
Brake Warning Light Switch Wire Included No
Brand CPP HydraStop
Hardware Included Yes
Hydraulic Hose Kit Included No
Master Cylinder Bore Size 1.125
Master Cylinder Finish Black
Master Cylinder Included Yes
Master Cylinder Lid Style Black Smooth Flat Top
Master Cylinder Material Aluminum
Master Cylinder Type Wilwood Tandem
Mounting Location Firewall Mount
Proportioning Valve Included Yes
Proportioning Valve Material Alumium Black
Proportioning Valve Type Adjustable Proportioning Block Left Hand
SKU 6474HBK-BSB-WWMCPVB
Warranty Yes
Works With 2 Wheel Disc Yes
Works With 4 Wheel Disc Yes
Works With 4 Wheel Drum Yes

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Classic Performance Street Beast Hydrastop Kit with Wilwood Black Master Cylinder 6474HBK-BSB-WWMCPVB: