Wilwood Front Dynalite Brake Kit for Triumph TR4A/TR250/TR6, Black Calipers with 11-Inch Plain Rotors and Flexlines (Listed 1965–1976 Applications)

Black four-piston Dynalite calipers replace the documented Triumph front calipers in this 11.00-inch vented-rotor conversion. The separate aluminum hats attach to the retained original hubs, including the supported wire-wheel knock-off arrangement, without changing the specified track width. BP-10 pads and braided flexlines are supplied. Check the individual TR4A, TR250 or TR6 year range and wheel profile before purchase. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. It designs and manufactures calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. This kit is one configuration within that disc-brake-system range and must be matched to the vehicle build.

Technical Details

• Manufacturer part number: 140-15912. 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.
• Minimum nominal wheel diameter: 15 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.
• 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.
• Service caliper: Forged Dynalite Internal; 4 pistons; stainless piston material. Lug mounting, black powder coat finish.
• Published piston bores: 1.62, 1.62 inches. Supplied pad compound: BP-10.
• 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.

With over 20 years of parts and fitment experience, PMB Performance can help compare the required mounting interface with the vehicle build. Share spindle or axle measurements and wheel information before ordering if anything is uncertain.

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.