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Instruction Sheets for Part Number WIL-140-16861
Wilwood TX4R Big Brake Rear Brake Kits
Disc Brakes, TX4R, Rear, Slotted Rotors, 4-Piston Black Calipers, Cadillac, Chevy, GMC, Kit
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Estimated Ship Date: Apr 22, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
140-16861
Part Type:
Product Line:
Summit Racing Part Number:
WIL-140-16861
UPC:
889545105995
Position:
Rear
Front Rotor Included:
No
Brake Rotor Bolt Pattern (in.):
6 x 5.50 in.
Brake Rotor Bolt Pattern (mm):
6 x 139.70mm
Rear Rotor Included:
Yes
Rear Rotor Style:
Slotted surface
Rear Rotor Construction:
Vented
Rear Rotor Diameter:
16.00 in./406.40mm
Rear Rotor Thickness (in.):
1.25
Front Caliper Included:
No
Rear Caliper Included:
Yes
Rear Caliper Piston Quantity:
Four
Rear Caliper Material:
Aluminum
Rear Caliper Color:
Black
Brake Pads Included:
Yes
Friction Material Name:
BP-Q
Parking Brake Provision:
No
Minimum Recommended Wheel Diameter (in.):
20 in.
Offset (in.):
0.000 in.
Front Spindles Included:
No
Master Cylinder Included:
No
Brake Booster Included:
No
Remanufactured:
No
Brake Hoses Included:
No
Quantity:
Sold as a kit.
Notes:
For OE rears with single piston calipers.
Wilwood TX4R Big Brake Rear Brake Kits
Wilwood TX4R Big Brake rear brake kits provide the ultimate in braking performance for countless applications—including many Chevrolet, GMC, and Cadillac truck, SUV, and armored vehicles. Using TX6R radial mount 6-piston aluminum calipers and massive 15.50 in., one-piece, GTB alloy rotors, these bolt-on kits deliver consistent stopping power and extreme-duty durability under sustained high heat. The calipers are volume matched for compatibility with original equipment power brake system output. The kits include radial mount caliper brackets and all the necessary hardware to complete the installation. Braided stainless steel flex lines are supplied for each specific application. Order the TX4R Big Brake kit recommended for your vehicle.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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