Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This bare 15/16-inch High Volume Tandem package includes a general-purpose threaded pushrod for manual brakes. A left-mounted combination valve, stainless connecting tubes and bracket hardware bring the pressure-control components together at the master. Bill Wood's founding of Wilwood Engineering in 1977 established a disc brake design and manufacturing business based in Camarillo, California. Calipers, rotors, master cylinders, fittings, valves and brake lines form its range for motorsport, street-performance and specialized applications. Choosing a service component still requires checking the mating parts and overall system configuration.
Technical Details
- Manufacturer part number: 261-13626
- Material: Aluminum
- Cylinder bore: 15/16"
- Pressure circuits: 2
- Stroke Length: 1.10 in
- Reservoir Type: Integral
- Fluid capacity: 8.0 / 4.8 oz
- Flange-to-end length: 8.15"
- Overall Length: 12.26"
- Mounting centers: 3.22–3.40"
- Pushrod dimensions: 4.11" x 3/8-24
- Finish: Bare
- Native pressure ports: 1/2-20 at both circuits; use the correct included outlet adapters and seal washers
- Circuit outlet adapters: Primary: 3/8-24 or 1/2-20 inverted flare; secondary: 3/8-24 or 9/16-18 inverted flare
- Hydraulic relationship: Equal pressure output from the two circuits before external proportioning; 2:1 primary/secondary volume relationship
- Service: Factory rebuild only; do not disassemble the tandem piston assembly
- Kit contents: Master cylinder, left-side combination proportioning valve and bracket, formed stainless connecting tubes and mounting hardware
- Combination-valve functions: Adjustable rear pressure, isolated front/rear circuits, front-line junction and hydraulic brake-light switch
Fitment & Compatibility
Confirm the 3/8-24 rod connection and the pedal travel available for a 1.10-inch stroke. The 15/16-inch bore must suit caliper displacement; check left-side valve clearance as well as the 3.22–3.40-inch mounting centers.
Manufacturer Documents
- Wilwood product specifications
- Wilwood DS985 instructions and specifications
- Wilwood FL331 instructions and specifications
- Wilwood FL162 instructions and specifications
- Wilwood DS487 instructions and specifications
PMB Performance has more than 20 years of experience matching brake components. Share the actual mounting, linkage and hydraulic arrangement when requesting fitment assistance.
