Wilwood Left Handlebar Hydraulic Master with Impact-Resistant Long Lever and 5/8-inch Piston

This left-hand handlebar master combines a long lever with a translucent integral reservoir and a three-position hydraulic brake lock. Its five-eighths-inch bore is intended for suitable recreational, sport and outdoor equipment rather than an assumed model-specific replacement. The broader Wilwood Engineering range includes calipers, brake lines, rotors, valves, fittings and master cylinders for disc brake systems. Established by Bill Wood in 1977 and based in Camarillo, California, Wilwood designs and manufactures for motorsport, street-performance and specialized applications. Correct component selection considers the complete system's geometry and hydraulic requirements.

Technical Details

• Manufacturer part number: 260-4201
• Material: Aluminum / Plastic
• Cylinder bore: 5/8"
• Pressure circuits: 1
• Stroke Length: 0.45 in
• Listed displacement per stroke: 0.12 cu in
• Reservoir Type: Integral
• Overall Length: 7.50"
• Mounting centers: 7/8" Dia.
• Finish: Black E-coat
• Bar diameter: 7/8 inch
• Lever: Long impact-resistant lever
• Lock: Three-position hydraulic holding mechanism
• Side: Left hand
• Connection references: Exact page identifies M10 × 1.0 banjo and threaded 1/4-32 switch; FL55 lists M10 × 1.0 inverted double flare and a bayonet switch for this part number. Confirm the supplied version before selecting fittings or switch.

Fitment & Compatibility

Match the seven-eighths-inch handlebar clamp, left-side orientation and required fluid displacement. Wilwood's product page describes an M10 x 1 banjo connection and threaded 1/4-32 switch, while flyer FL55 specifies an M10 x 1 inverted-double-flare outlet and bayonet switch. Confirm the supplied connection and switch configuration before ordering the mating parts.

Manufacturer Documents

• Wilwood product specifications
• Wilwood FL55 instructions and specifications
• Wilwood FL162 instructions and specifications

PMB Performance offers over 20 years of parts and brake-fitment experience. For a compatibility check, provide the existing assembly and the dimensions that govern the replacement.