Wilwood Red Dynalite Front Brake System, 11-Inch Plain Vented Rotors for Triumph TR4A, TR250 and TR6 Applications (Listed 1965–1976 Applications)

Use the red-caliper plain-rotor Dynalite kit for the listed Triumph front spindle and hub configuration. The 11.00-inch vented rings mount through separate aluminum hats, while BP-10 pads and the included flexlines complete the service-brake conversion. No replacement wheel hubs are supplied. Confirm the car's TR4A, TR250 or TR6 application row and clearances before retaining either conventional or documented knock-off wheel mounts. From Camarillo, California, Wilwood Engineering develops disc-brake systems for street-performance, motorsport and specialized uses. Bill Wood founded the company in 1977. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form part of its range, and must be combined to match the demands of the complete brake system.

Technical Details

• Manufacturer part number: 140-15912-R. Quantity: one kit for the stated axle/application.
• No replacement wheel hubs are supplied; retain or provide the documented matching hub arrangement.
• Wheel mounting pattern: 4 x 4.00 inches.
• Service caliper: Forged Dynalite Internal; 4 pistons; stainless piston material. Lug mounting, red powder coat finish.
• Published piston bores: 1.62, 1.62 inches. Supplied pad compound: BP-10.
• Rotor specification: 11.00-inch outside diameter × 0.81-inch thickness; plain faces. Iron construction; Ultralite HP 30 design; published vane configuration: 30 V.
• Rotor hats: aluminum, black e-coat finish; Big Brake Hat - Short Offset. Hat offset: 0.725 inch.
• Minimum nominal wheel diameter: 15 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• Caliper hydraulic inlet: 1/8-27 NPT.
• Included braided flexline kit: 220-15921 (15.00 in). Confirm the chassis fitting and routing for the actual installation.
• Mounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.

Fitment & Compatibility

Listed Triumph applications are TR4A 1965–1968, TR250 1967–1969 and TR6 1968–1976. Match the exact model row rather than merging these into a blanket year range. The conversion bolts to the documented original spindle, retains the original hubs and supports the specified wire-wheel knock-off mounts without changing track width. Check the 15-inch wheel drawing and use the supplied flexlines with suitable routing and chassis connections. Use the complete application table below for the individual year, submodel, brake configuration and note attached to each entry.

Ask PMB Performance to review the brake configuration if the vehicle has been modified. Our 20+ years of parts and fitment experience help identify the axle, spindle and wheel details that need to match before the kit is selected.

Manufacturer documentation: Installation instructions.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information: P65Warnings.ca.gov.