# Wilwood ST FSL4R Caliper 1.25 .81 Rotor Ano

FSL4R/ST calipers provide performance advantages of Thermlock® pistons for ultimate heat protection. Thermlock® pistons used 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 Type III 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.

## Details

- **Price:** 676.83 CAD
- **Vendor:** Wilwood
- **Type:** Brake Calipers - Perf

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 676.83 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wilwood-st-fsl4r-caliper-1-25-81-rotor-ano)
> Updated: 2026-08-18