Wilwood 120-14331 Forged Dynalite Narrow Universal Lug Mount 4 Piston Caliper

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 racing. Computer-aided design and stress analysis technology comprise Wilwood’s latest innovation, providing substantial strength and performance improvements over all comparable caliper models. Forged Narrow Mount Dynalites are the strongest calipers in their class. FNDL calipers are a direct replacement for all prior Wilwood NDL calipers and similar competitor brands, with 3.50” centered mounting lugs. A total of five high-strength cap screws provide superior bridge strength and positive retention of the top loading 7816 or 7216 type brake pads. The full range of PolyMatrix pad compounds are available to match the brake response and thermal range requirements of any competition application. The actual stress-flow forging process realigns the metal’s grain structure within the contour of the caliper body. This process eliminates the breaks and interruptions in the internal grain 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 combined with the proven performance features of earlier Wilwood designs. Each caliper is fitted with Wilwood’s SRS stainless steel bridge plates. SRS plates eliminate bridge wear caused by pad rattle and extends the service life of the caliper body. The spring action of the SRS plates also eliminates pad rattle and dampens the harmonic vibrations that contribute to squeal at brake engagement. 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 package, 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.