Wilwood Forged Superlite 4 Caliper with 1.88/1.75-inch Pistons and .81-inch Disc - Part #120-11137

FSLI4 and FSLI4/ST calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock® pistons in the ST models. Differential piston bores compensate for leading-edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock® pistons in the ST models block heat transfer from the pads and reduce temperatures in the caliper, fluid, and seals by up to 25% over standard stainless steel pistons. These are the go-to calipers for all types sustained hard braking on dirt and asphalt ovals and a wide range of off-road, rally and road course applications.

The Wilwood Forged Superlite 4 Caliper (Part #120-11137) is engineered for high-performance braking in demanding racing and off-road applications. Featuring differential bore pistons, this caliper optimizes pad wear performance by compensating for mechanical loading and temperature variations across the pad face, which helps reduce tapering and uneven wear during sustained high-temperature braking. The caliper's design ensures consistent, reliable braking performance on dirt and asphalt ovals, as well as rally and road course environments, making it a versatile choice for serious drivers. The caliper is available in models with Thermlock® pistons, which provide up to 25% better heat transfer protection by reducing temperatures in the caliper, fluid, and seals, thereby enhancing durability and performance under extreme conditions. The robust forged construction guarantees strength and longevity, suitable for intense racing conditions. This caliper's compact size and weight distribution make it ideal for applications where space and weight savings are critical. Its precision engineering and high-quality materials ensure excellent heat dissipation, helping maintain consistent brake pedal feel and performance over prolonged periods of hard braking. Whether used in off-road racing, rally, or high-speed track days, the Wilwood Forged Superlite 4 caliper delivers exceptional stopping power and durability. Easy to install and maintain, it is a reliable upgrade for any high-performance braking system requiring superior heat management and pad wear control.

Features:

• Differential bore pistons: Compensate for loading and temperature variances to reduce pad taper wear

• Thermlock® pistons: Reduce heat transfer by up to 25%, protecting caliper components during high-temperature braking

• Forged construction: Ensures strength, durability, and reliable performance under demanding conditions

• Optimized for high-temperature applications: Suitable for dirt, asphalt ovals, rally, off-road, and road course racing

• Compact and lightweight design: Ideal for applications where space and weight savings are critical

• Enhanced heat dissipation: Maintains consistent brake pedal feel during extended hard braking sessions

• Versatile application: Compatible with a variety of racing and off-road vehicles requiring high-performance calipers

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1
Clearance Item: t