Engines and Components› Pistons and Piston Rings

DSS Racing

DSS Racing FX-Series Piston Set 4.000" Bore Flat Top

$809.20

SKU: 2-3501-4000D

Out of Stock
Out of Stock
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The DSS Racing FX-Series pistons are forged from 2618 alloy for increased horsepower potential and durability. These pistons are designed for naturally aspirated, nitrous, or boosted engines, featuring internal gussets for added strength. CNC milling in non-critical areas reduces weight, balancing strength, power, and longevity.

The FX-Series pistons include the patented X-Groove skirt design, which minimizes damage from fuel wash down and break-in debris, contributing to superior skirt, cylinder, and ring life. For stroker engines, the advanced skirt design enhances piston stability and ring seal for quieter operation.

This specific set is for a 4.000 in. bore with a +5.00cc piston head volume, designed for a 4.7L/289 Small Block Ford engine with a stock stroke and a 5.155 in. rod length. They are flat-top pistons with three valve reliefs and are sold as a set of 8.
Show original supplier description
The DSS Racing FX-Series pistons are forged from 2618 alloy for increased horsepower potential and durability. These pistons are designed for naturally aspirated, nitrous, or boosted engines, featuring internal gussets for added strength. CNC milling in non-critical areas reduces weight, balancing strength, power, and longevity. The FX-Series pistons include the patented X-Groove skirt design, which minimizes damage from fuel wash down and break-in debris, contributing to superior skirt, cylinder, and ring life. For stroker engines, the advanced skirt design enhances piston stability and ring seal for quieter operation. This specific set is for a 4.000 in. bore with a +5.00cc piston head volume, designed for a 4.7L/289 Small Block Ford engine with a stock stroke and a 5.155 in. rod length. They are flat-top pistons with three valve reliefs and are sold as a set of 8.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDSS Racing
Part Number2-3501-4000D
CategoryEngines and Components

Videos

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

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.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy