Wilwood Street Performance D8-4 Front Caliper Brake Kits, Red

The Wilwood Street Performance D8-4 Front Caliper Brake Kit (Part #140-10789-R) is made for 1965–1982 Chevrolet Corvette models and replaces the original front callipers with a direct bolt-on upgrade that uses Wilwood’s D8-4 calliper design. This kit comes with BP-10 compound pads and an included stainless steel braided flexline hose kit, which improves pedal response and brake line durability compared to the original rubber hoses. The D8-4 calliper provides consistent stopping power, and the kit allows you to keep the original mounting hardware for a straightforward installation. This kit is aimed at reliability and performance, with key technical changes for even brake pressure and better pad performance.

KEY SPECIFICATIONS

- Fitment: 1965-1982 Chevrolet Corvette front spindle
- Calipers: Wilwood D8-4 with 1/8-27 NPT inlet fitting
- Pads: BP-10 compound (included)
- Brake Lines: Stainless steel braided flexline (included)
- Prop65: Yes
- Part Number: 140-10789-R

INSTALLATION SUMMARY

Start by removing the factory front callipers and brake hoses. The Wilwood D8-4 callipers bolt into the stock position using the original bolts and washers, applied with red Loctite® 271 and torqued to spec. Brake pads slide directly into the calliper, held in place with the supplied pins and clips. Replace the OEM rubber brake hoses with the included stainless steel flex lines; apply PTFE tape to the fittings as needed. Carefully route hoses to avoid contact with moving parts. After repeating the steps on both sides, bleed the brake system—start with the calliper farthest from the master cylinder, bleeding outboard, and then inboard screws. A break-in and bedding procedure for the pads and rotors is needed after installation. Full instructions recommend thorough inspection and testing before road use, and installation should be performed by someone experienced with disc brake work.

FACTORY FIT NOTES

This kit is a direct fit for 1965-1982 Corvette front spindles but requires a check of wheel clearance before installation. You must use the included stainless steel flexline brake hoses; OEM rubber hoses are not compatible with this system. Reuse of the stock mounting bolts and washers preserves the original fit, but always verify bolt engagement and fastener suitability in case of minor factory variations. Wheel track or brake bias may be slightly changed; test carefully after installation. This kit is meant for vehicles originally equipped with compatible disc brakes and front spindles.