Wilwood 120-11577 Forged Dynalite Narrow Lug Mount 4-Piston Caliper, Polished.

Forged Narrow Dynalite

Wilwood’s new Forged Narrow Mount Dynalite (FNDL) calipers are ideally suited and widely used in numerous competition applications including late models, modifieds, sprints, off-road and road course racing. Computer aided design and stress analysis technology comprise Wilwood’s latest innovation, providing substantial strength and performance improvements over all comparable caliper models. The Forged Narrow Mount Dynalite’s are the strongest calipers in their class. FNDL calipers are a direct replacement for all previous Wilwood NDL calipers and similar competitor brands with 3.50” centered mounting tabs. A total of five bolts provide superior bridge strength and positive retention of either 7816 or 7216 type top-load brake pads. The full range of PolyMatrix pad compounds are available to match the braking response and thermal range requirements for any competition application. The actual stress flow forging process realigns the metal’s granular structure within the contour of the caliper body. This process eliminates the breaks and interruptions in the internal granular structure that occur when machining a straight block. The FEA generated radial transition design eliminates steps and shoulders in the area between the piston housing body and the caliper bridges. Incorporating a radius in this transition area substantially increases resistance to deflection and caliper separation under load. Structural deflection and volume displacement tests have proven the Forged Narrow Mount Dynalite caliper to outperform all other. Existing styles of this popular caliper size. The superior strength of this innovative design is matched to the proven performance features of previous Wilwood designs. Each caliper is fitted with Wilwood’s SRS stainless steel bridge plates. SRS plates eliminate bridge wear caused by pad rattle and extend the service life of the caliper body. The spring action of the SRS plates also eliminates pad rattle and dampens harmonic vibrations that contribute to squeal under braking. Other standard Wilwood features include high-temperature seals and stainless steel pistons to eliminate corrosion and retard heat transfer from the pads. Internal fluid passages eliminate the need for external tubes. Four corner bleed screws assure simple and effective air evacuation from the system and allow a caliper to be mounted in any position: front, rear, right or left. To complete the assembly, Legacy FNDL calipers are finished in Wilwood’s exclusive black anodizing; newer production units feature a Type III gray anodize coating. Polished units are also available in certain piston sizes and rotor widths.