C.T.Johnson Surge Brake Lock RC4, 2-1/2 Inch Coupler Opening

The C.T.Johnson RC4 Surge Brake Lock is a coupler lock designed for trailer couplers with a 2-1/2 inch opening span. It secures the surge brake coupler mechanism to deter unauthorized towing and theft while the trailer is parked or in storage. The lock features a machined exterior construction and is manufactured in the United States. Each unit ships as a single-piece lock with a package quantity of one.

Specifications

• Brand: C.T.Johnson
• Manufacturer Part Number: RC4
• Product Type: Trailer Brake Lock / Auto Accessory
• Coupler Opening Span: 2-1/2 inches
• Weight: 0.5 pounds
• Product Dimensions: 8 x 5 x 2 inches
• Exterior Finish: Machined
• Country of Origin: United States
• Package Quantity: 1

Frequently Asked Questions

What size coupler does the C.T.Johnson RC4 fit? The RC4 is built for a 2-1/2 inch coupler opening span, so measure the coupler opening before ordering to confirm this size matches.

Is the RC4 a genuine C.T.Johnson part or an aftermarket copy? RC4 is the genuine C.T.Johnson manufacturer part number for this surge brake lock, not a generic aftermarket substitute.

How much does the RC4 brake lock weigh? This lock weighs 0.5 pounds.

What are the dimensions of the RC4 lock? The RC4 measures 8 x 5 x 2 inches as a packaged unit.

What is the RC4 lock made of? The C.T.Johnson RC4 has a machined exterior construction.

Where is the RC4 lock manufactured? The RC4 Surge Brake Lock is made in the United States.

How many locks come in one package? Each package contains one C.T.Johnson RC4 surge brake lock.

What is a surge brake lock used for? A surge brake lock like the RC4 fits over the trailer coupler to prevent the surge brake actuator from being operated, deterring theft of the trailer while it is unattended.

Will the RC4 fit a coupler with a different opening size? No, the RC4 is sized specifically for a 2-1/2 inch coupler opening span and will not properly secure couplers of a different opening size.

Is the RC4 lock still in production? Yes, the C.T.Johnson RC4 is not discontinued and remains an active manufacturer part number.