---
product_id: 26740476
title: "Speed Pro TRW Forged Flat Top 4VR Coated Skirt Piston Set/8 compatible with Ford Mercury 289 302 5.0 5.0L 9.0:1 +.040\" (4.040\" Bore)"
brand: "prospeed"
price: "S$671"
currency: SGD
in_stock: true
category: "Automotive"
url: https://www.desertcart.sg/products/26740476-speed-pro-trw-forged-flat-top-4vr-coated-skirt-piston
store_origin: SG
region: Singapore
---

# Speed Pro TRW Forged Flat Top 4VR Coated Skirt Piston Set/8 compatible with Ford Mercury 289 302 5.0 5.0L 9.0:1 +.040" (4.040" Bore)

**Brand:** prospeed
**Price:** S$671
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Speed Pro TRW Forged Flat Top 4VR Coated Skirt Piston Set/8 compatible with Ford Mercury 289 302 5.0 5.0L 9.0:1 +.040" (4.040" Bore) by prospeed
- **How much does it cost?** S$671 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/26740476-speed-pro-trw-forged-flat-top-4vr-coated-skirt-piston)

## Best For

- prospeed enthusiasts

## Why This Product

- Trusted prospeed brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

These Speed-Pro forged pistons are made from extruded VMS-75 aluminum alloy that&apos;s forged under 3,000 tons of pressure to &quot;near-net&quot; shape. After that, they&apos;re machined to their final configuration. These pistons offer excellent strength and durability and are capable of taking the punishment that&apos;s dished out on the street and in competition. They&apos;re available for a wide variety of applications, including OE replacements and all-out racing engines.

## Features

- Bore: 4.040" (at +.040"); Comp Distance: 1.605"; Head Style: Flat head with 4-valve reliefs; Dome Volume:-2.70cc
- Pin Size: .912" (included); Press-fit only; For stock stroke crankshaft (289ci-2.870", 302ci-3.000") and stock length connecting rods (289ci-5.155", 302ci-5.090")
- Appx Compression Ratio (w/+.030" bore): w/58.2cc chambers 9.14:1; w/60.4cc 8.92:1, w/63.0cc 8.67:1; DurOshield Coated Skirts
- 1963-68 Car 289ci with 4-barrel carburetor, 1963-67 Car 289 "Hi-Po", 1965-68 LD Trk 289ci
- 1973-83 Car 302ci, 1984 Car 5.0L Mustang & Capri w/4-barrel crab & HO, 1985 Car 5.0L Marquis, Mustang & Capri w/CFI & HO-LTD except PC-LTD PC w/CFI & HO before 01/85; 1978-85 LD Trk 302ci
- ›See more product details

## Images

![Speed Pro TRW Forged Flat Top 4VR Coated Skirt Piston Set/8 compatible with Ford Mercury 289 302 5.0 5.0L 9.0:1 +.040" (4.040" Bore) - Image 1](https://images-na.ssl-images-amazon.com/images/I/41zZfNJFDlL.jpg)
![Speed Pro TRW Forged Flat Top 4VR Coated Skirt Piston Set/8 compatible with Ford Mercury 289 302 5.0 5.0L 9.0:1 +.040" (4.040" Bore) - Image 2](https://images-na.ssl-images-amazon.com/images/I/41MfAyvjEKL.jpg)

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**Shop now:** [https://www.desertcart.sg/products/26740476-speed-pro-trw-forged-flat-top-4vr-coated-skirt-piston](https://www.desertcart.sg/products/26740476-speed-pro-trw-forged-flat-top-4vr-coated-skirt-piston)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-14*