Wilwood TM1 Tandem Master Cylinder, 5/8-inch Bore, Side Mount, Without Reservoirs

The TM1 combines two hydraulic circuits in a narrow side-mounted master cylinder with a five-eighths-inch bore. It includes a pushrod and fixed clevis but requires separately mounted reservoirs; containers cannot be fitted directly to this cylinder body. The disc brake systems Wilwood Engineering designs and manufactures include calipers, rotors, master cylinders, brake lines, valves and fittings. The company dates to Bill Wood's founding in 1977 and is based in Camarillo, California. Motorsport, specialized and street-performance applications all call for parts matched to the operating requirements of the full system.

Technical Details

• Manufacturer part number: 260-11097
• Material: Aluminum / Plastic
• Cylinder bore: 5/8"
• Pressure circuits: 2
• Stroke Length: 1.31 in
• Listed displacement per stroke: 0.4 cu in
• Reservoir Type: Remote
• Overall Length: 11.53"
• Secondary Outlet Thread Size: 10MM X 1.00
• Pushrod dimensions: 5.14" to 10mm Clevis
• Finish: Bare
• Reservoir package: Reservoirs not included; remote mounting only, with separate 260-11098 kit
• Mounting: 3.53-inch side-mount centers
• Outlet: M10 × 1.0 banjo
• Linkage: Pushrod, boot and 0.39-inch clevis included

Fitment & Compatibility

Use the 3.53-inch side-mount spacing and matching M10 x 1 banjo outlet connections. Wilwood identifies remote reservoir kit 260-11098 separately. The pedal must allow all 1.31 inches of master-cylinder stroke before reaching the floor or another stop so the tandem circuit arrangement can operate as intended.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS741 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.