Wilwood?s Billet Dynalite Single utilizes close tolerance design and manufacturing techniques which results in the most rigid, lightweight and attractive caliper in the evolution of the Dynalite Single Series. Starting at 1.58 pounds, the Billet Dynalite Single is perfect for compact high performance braking as required in Open Wheel, Drag, Modified, Kart, Motorcycle and Off Road applications. The two piston caliper is rigid, lightweight and holds a .49? thick, 1.1 cubic inch brake pad. Internal fluid passage and multiple bleed fittings permit right or left, front or rear mounting with 3.75? lug spacing, and will fit .38? thick rotors with diameter 13.00?. High temperature square piston seals control piston retraction while the stainless steel deep cup pistons reduce heat transfer from the pad to the brake fluid. Calipers accept 1/8-27 NPT inlet fitting and come standard with our exclusive re-usable pad retainer clip.Product Description: Brake Caliper, Dynalite, 2 Piston, Billet Aluminum, Black Anodize, 13 in OD x 0.380 in Thick Rotor, 3.750 in Lug MountPit Stop USA offers Wilwood Billet Dynalite Single Caliper 120-4060 at low everyday prices. Be sure to check out all our products from Wilwood Engineering including Wilwood Disc Brake Calipers .