# Wilwood Caliper-Narrow Superlite 4R-ST - Nickel 1.25/1.25in Pistons 1.10in Disc

Quick-Silver / ST series FNSLR/ST nickel plated forged billet calipers, with four Thermlock pistons, deliver championship proven performance with piston sizes to provide matched rear braking bias for use with the W6AR/ST or other larger piston front calipers. FNSL4R/ST calipers incorporate race technology into a radial mount body design with widespread adaptability. Including competition update options for all FNSL4R rear Big Brake kits. Thermlock pistons, high-temp seals, SRS bridge plates, and two-piece bleed screw assemblies are standard in all calipers. Four high-temp race only brake pad compounds in the 7416 pad type allow precise tuning of the brake response, friction requirements and temperature range

## Details

- **Price:** 751.03 CAD
- **Vendor:** Wilwood
- **Type:** Brake Calipers - Perf

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 751.03 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wilwood-caliper-narrow-superlite-4r-st-nickel-1-25-1-25in-pistons-1-10in-disc)
> Updated: 2026-08-18