Name: DSS Racing FX-Series Piston Set, 4.075 in. Bore
Brand: DSS Racing
SKU: 3-2744-4075
Price: 994.45 USD
Availability: OutOfStock

Overview

The DSS Racing D.S.S. FX-Series pistons are forged from premium aircraft quality 2618 alloy, designed to increase horsepower potential while withstanding high power demands. These pistons feature horizontal gas porting and internal gussets for added strength, making them suitable for naturally aspirated, nitrous, or boosted engines. Additional CNC milling optimizes weight for a balance of strength, power, and longevity. The patented X-Groove skirt design enhances skirt, cylinder, and ring life by reducing damage from fuel wash down and debris. For stroker engines, the advanced skirt design improves stability and ring seal for quieter operation. This set includes XR Extreme duty wrist pins and features forced pin oiling, drilled bottom land oil drain backs, pin lock ring removal slots, and precision-honed pin bores. The pistons have a 4.075 in. bore, a stock stroke type, and a 6.2L/378 actual engine displacement, with dish-style heads featuring two valve reliefs and a +12.00cc volume. Piston rings are sold separately.

Show original supplier description

The DSS Racing D.S.S. FX-Series pistons are forged from premium aircraft quality 2618 alloy, designed to increase horsepower potential while withstanding high power demands. These pistons feature horizontal gas porting and internal gussets for added strength, making them suitable for naturally aspirated, nitrous, or boosted engines. Additional CNC milling optimizes weight for a balance of strength, power, and longevity. The patented X-Groove skirt design enhances skirt, cylinder, and ring life by reducing damage from fuel wash down and debris. For stroker engines, the advanced skirt design improves stability and ring seal for quieter operation. This set includes XR Extreme duty wrist pins and features forced pin oiling, drilled bottom land oil drain backs, pin lock ring removal slots, and precision-honed pin bores. The pistons have a 4.075 in. bore, a stock stroke type, and a 6.2L/378 actual engine displacement, with dish-style heads featuring two valve reliefs and a +12.00cc volume. Piston rings are sold separately.

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

Brand	DSS Racing
Part Number	3-2744-4075
Category	Engines and Components

Videos

DSS Racing Forged pistons Small block Chevy LT1

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