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Wilwood

Wilwood ST FSL4R Caliper 1.88/1.75 1.25 Rotor

$506.10 $468.61 Save $37.49

SKU: W00B 120-13263

In Stock
In Stock
Ships by Aug 5
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 120-13263

FSL4R/ST calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock (R) 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 (R) 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. Featuring a wear resistant Type III hard anodize finish, 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.

Brake Caliper - Superlite - 4 Piston - Aluminum - Gray Anodized - 14.00 in OD x 1.250 in Thick Rotor - 5.980 in Radial Mount - Passenger Side - Each

MIA's Description

The Wilwood Forged Superlite 4R Radial Mount Caliper (MPN: 120-13263) is a high-performance, 4-piston caliper designed for superior braking in demanding applications. It features differential bore pistons for reduced pad taper wear and Thermlock® pistons for up to 25% lower heat transfer. The caliper body is stress-flow forged from premium aluminum alloy, weighing only 4.4 pounds, and boasts internal fluid ports for enhanced strength and reliability.

Fitment

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Specifications

BrandWilwood
Part NumberW00B 120-13263

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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