The Wilwood Forged Superlite (FSLI) series is a benchmark in short track, road racing, and off-road competition. This model features a redesigned body with internal fluid ports that eliminate the need for external crossover tubes, removing the risk of damage from debris or impact. The symmetrical piston bore layout, combined with four bleed screw assemblies, allows the caliper to be mounted in either leading or trailing positions on the left or right side of the vehicle.

• Piston Diameter: 1.38in (35.1mm)
• Rotor Width: Designed for 1.25in (31.8mm) thick discs
• Internal Crossover: Eliminates external fluid tubes for increased reliability
• Symmetrical Bore: Universal mounting for left/right and leading/trailing configurations
• Forged Construction: High-strength aluminum body for reduced flex under high pressure
• Manufacturer Part Number: 120-11130

The Wilwood Forged Superlite FSLI (Internal) series is a high-performance evolution of the industry-standard Superlite caliper, designed for short track, late model, road racing, and off-road competition. This FSLI model (120-11129) features a redesigned body with internal fluid ports, effectively eliminating external fluid crossover tubes and the risk of damage during track contact or debris strikes.

Equipped with a symmetrical piston bore and four bleed screw assemblies, this caliper offers versatile mounting configurations. It can be installed in leading or trailing positions on either the left or right side of the vehicle without modification. The forged aluminum construction ensures maximum stiffness and consistent pedal feel under high-heat racing conditions.

• Piston Diameter: 1.38in
• Disc Width Compatibility: 1.10in
• Internal Fluid Ports: Eliminates external crossover tubes for improved durability
• Symmetrical Bore Design: Allows for universal right, left, leading, or trailing mounting
• Material: High-strength forged aluminum
• Manufacturer Part Number: 120-11129

The Wilwood Forged Superlite Internal (FSLI) series represents the latest evolution in the benchmark Superlite family, widely utilized in short track, late model, modified, and road-racing competition. This redesigned model integrates internal fluid ports to eliminate external crossover tubes, removing the risk of damage or failure caused by track debris.

Engineered for versatility and performance, the FSLI features a symmetrical piston bore design and is equipped with four bleed screw assemblies. This configuration allows for universal mounting on either the left or right side of the vehicle in both leading and trailing positions. The forged aluminum body provides superior structural integrity and resistance to deflection under high-pressure braking conditions.

• Piston Size: 1.25 in
• Rotor Width: 0.81 in
• Caliper Type: 4-Piston
• Series: Forged Superlite Internal (FSLI)
• Internal Fluid Ports: Eliminates external transfer tubes
• Mounting: Universal leading/trailing and left/right orientation
• Manufacturer Part Number: 120-11126

The Wilwood Forged Superlite Internal (FSLI) caliper series is the latest evolution of the industry-standard Superlite family, engineered for the rigors of short track, late model, and road-race competition. This FSLI model eliminates the external fluid cross-over tubes found on traditional calipers, replacing them with internal fluid ports to prevent damage from track debris and mechanical interference.

Designed for maximum versatility, the symmetrical piston bore architecture includes four bleed screw assemblies. This allows the unit to be mounted in either a leading or trailing position on the left or right side of the vehicle, simplifying brake system configuration and spares management. The forged body provides high-clamping force with minimal deflection under extreme temperatures.

• Internal fluid transfer ports eliminate vulnerable external tubes
• Universal mounting: fits right or left, leading or trailing positions
• Four bleed screw assemblies for easy maintenance in any orientation
• Symmetrical piston bore design for even pad loading

• Manufacturer Part Number: 120-11125
• Piston Diameter: 1.12 in
• Compatible Disc Width: 0.81 in
• Series: Forged Superlite Internal (FSLI)

Fits select 1968-1996 GM passenger vehicles and trucks with 1.04-inch rotors.

The Wilwood D52 caliper is a high-performance direct bolt-on 2-piston replacement for the factory single-piston calipers found on many classic GM applications. Engineered for both street and track use, these calipers eliminate common OE failures like bore pitting and seal leaks while providing a significant reduction in unsprung weight.

Each D52 caliper is constructed with a forged billet aluminum body for maximum strength and finished in a durable red coating. The dual 2.00-inch stainless steel pistons and competition-style high-temperature seals ensure consistent braking performance and long-term reliability in demanding environments.

• Direct bolt-on replacement for factory GM D52 calipers
• Forged billet aluminum body for weight savings and rigidity
• Dual 2.00-inch stainless steel pistons for corrosion resistance
• Internal competition-style high-temperature seals
• Fits 1.04-inch (26.4mm) rotor thickness
• Finish: Red Powder Coat
• Manufacturer Part Number: 120-10937-RD

Fits select 1968-1996 GM passenger vehicles and trucks as a direct-fit performance upgrade. This Wilwood D52 caliper (MPN 120-10936-BK) is a direct bolt-on two-piston replacement for the factory original single-piston calipers.

Engineered to resolve common issues with OE cast-iron units, these calipers feature forged billet aluminum bodies that significantly reduce unsprung weight while increasing structural rigidity. By utilizing dual 2.00-inch stainless steel pistons and competition-style high-temperature seals, Wilwood eliminates the rust, bore pitting, and seal failures that often plague stock iron calipers. These units provide low-maintenance performance and high-temperature reliability suitable for both spirited street driving and track applications.

• Piston Size: Dual 2.00-inch (50.8mm) stainless steel pistons
• Disc Width: Designed for 1.28-inch (32.5mm) thick rotors
• Construction: Forged billet aluminum for maximum strength and weight savings
• Finish: Durable black powder coat for corrosion resistance
• Installation: Direct bolt-on to factory mounting points

The Wilwood DynaPro Single Lightweight (DPS-LW) billet caliper is a high-strength performance upgrade designed to replace the legacy Dynalite Single (DLS) series. Precision-machined from billet aluminum, the DPS-LW offers a significant strength increase while maintaining a compact footprint. Its lightweight profile is specifically engineered for applications with limited space, such as Sprint Car front ends, ensuring proper clearance without sacrificing clamping force.

• Precision-machined billet aluminum body for maximum rigidity
• 1.75-inch pistons for reliable braking performance
• 3.25-inch lug mounting centers
• Designed for 0.38-inch thick rotors
• Direct upgrade/replacement for Wilwood DLS series calipers
• Manufacturer Part Number: 120-10188