Wilwood 120-15564 SI Billet Narrow Dynalite 4-Piston Universal Radial Brake Caliper

Billet Narrow Dynalite Radial Mount Brake Calipers

Wilwood’s prestigious DynaLite calipers are used in all types of competition, and the latest Billet Narrow Dynalite Radial Mount (NDLR) series is better than ever. Starting at a mere 3.20 pounds (1.45 kg), this compact, lightweight caliper now features a stiffer radial mount design. Engineered with a spacer-less body specifically for .38", .810", and 1.00" wide rotors, and a central bridge bolt that increases overall caliper strength and top-load pad retention. A durable Mil-Spec Type III (Aluminum Oxide) ceramic hard-anodized finish further enhances caliper durability by resisting bore wear and surface abrasion.

Billet NDLR calipers can be mounted directly on studs with 4.75" center spacing, or used with a radial mount bracket kit in place of a lug mount caliper.

Internal dampening springs, internal fluid crossover, internal controlled retraction seals, and 3/8” cross bolts for added strength and stiffness combine to provide a consistent pedal feel from start to finish. Uses 7816 type brake pads with many Wilwood compound options to fine-tune your driving style and track conditions. The Billet NDLR caliper is compact, lightweight, and robust, providing strong clamping force from its four stainless steel cup pistons. Bodies are fully CNC machined from solid billet, with internal fluid ports that eliminate external fluid tubes. Each caliper is equipped with two corner bleeders and external inlets in the correct location for a standard internal mount. Bridges are equipped with stainless steel anti-vibration wear plates. These plates reduce wear on the bridges and provide smooth, vibration-free pad operation. A central bridge bolt increases overall caliper strength and positive top-load pad retention. All Billet NDLR calipers are designed for long life using the 0.63” 16.0mm thick 7816 style brake pads. These pads are available in various PolyMatrix compounds to provide the right braking torque and thermal range for any high-performance or racing application. Radial mount bracket kits are used to install a radial mount brake caliper in place of a lug mount brake caliper. Brackets are available for Sprint and Midget Inboard and Dirt Late Model applications for various rotor diameters.

Pistons

Piston Quantity	4
Piston Area (in²)	3.00
Piston Type
Dust Boot	No

Rotor Dimensions

Rotor Width (in)	1.00
Rotor Diameter (in)	12.19

Pad Dimensions

Pad Area (in²)	6.36
Pad Volume (in³)	3

Service Rating & Material

Material	Billet Aluminum
Weight (lbs)	3.7

Colors & Finish

Color	Anodized
Finish	Type III Anodized

Mounting

Mount Center (in)	4.75
Mount Position
Mount Side	Universal
Mount Type	Radial

Specifications

Rotor Compatibility

Rotor Width (in)	1.00
Max Rotor Width (in)	1.00
Min Rotor Width (in)	0.94
Max Rotor Diameter (in)
Min Rotor Diameter (in)	11.75

Brake Pad Specifications

Brake Pad Type 1	7816
Brake Pad Type 2	7216
Brake Pad Type 3	N-A
Total Pad Area (in²)	6.36
Total Pad Volume (in³)	3
Mounting

Piston

Specifications

Piston Bore 1 (in)	1.38
Piston Bore 2 (in)	1.38
Piston Bore 3 (in)
Total Piston Area (in²)	3.00

Mounting Specifications

Mount Type	Radial
Mount Side	Universal
Mount Center (in)