SMP Stoplight Switch - Heavy Duty Hydraulic Rear

SMP heavy-duty hydraulic rear stoplight switch for V-twin motorcycles, engineered with brass terminals and reinforced contacts to survive salt, mud, and extreme riding conditions. Direct OEM replacement trusted by Harley-Davidson and Indian Motorcycle riders.

Features

• Heavy-duty hydraulic rear stoplight switch
• Brass terminals resist corrosion
• Reinforced contacts for durability
• Direct OEM replacement

Specifications

• Brand: SMP
• Manufacturer Part #: MCSLS4
• UPC: 727943097606
• Length: 2.65 in
• Width: 4.15 in
• Height: 1.7 in
• Weight: 0.04 lbs
• Country of Origin: Poland

Fitment

Fits V-twin motorcycles including Harley-Davidson and Indian Motorcycle models with hydraulic rear brake systems.

Frequently Asked Questions

How do I know if my rear brake uses a hydraulic stoplight switch?

If your bike has a single rear brake lever and a hydraulic master cylinder, it uses a hydraulic stoplight switch. This part mounts directly to that cylinder.

Is this a direct replacement for OEM?

Yes — SMP manufactures this as a direct OEM replacement. It bolts in where the original switch was.

Will this fit my specific year and model?

This part fits most V-twin motorcycles with hydraulic rear brakes. Verify your brake system type (hydraulic vs. mechanical) before ordering.

What if my stoplight switch is stuck or worn out?

A worn switch may cause the brake light to stay on or flicker. This replacement restores proper light operation when the brake is applied.