Sparco RW-4 FIA Racing Underwear Package

Sparco RW-4 Nomex racing underwear bundle with balaclava, shirt, pants and socks FIA 8856-2018 certified

The Sparco RW-4 Nomex Racing Underwear Bundle combines the complete RW-4 fire-resistant underlayer system into one convenient package. It includes the Sparco RW-4 balaclava, long-sleeve shirt, pants, and Nomex racing socks for complete head-to-toe protection underneath your racing suit.

Designed for drivers who want dependable FIA-certified protection with a comfortable regular fit, the RW-4 collection uses a soft-touch interlock fabric that is lightweight, breathable, and comfortable enough for long track sessions. Every component in this package is FIA 8856-2018 approved.

What's Included

1x Sparco RW-4 Nomex Balaclava – FIA 8856-2018 approved fire-resistant head and neck protection
1x Sparco RW-4 Nomex Shirt – FIA 8856-2018 approved long-sleeve racing underlayer
1x Sparco RW-4 Nomex Pants – FIA 8856-2018 approved fire-resistant racing underwear
1x Sparco RW-4 Nomex Socks – FIA 8856-2018 approved mid-calf racing socks

Sparco RW-4 Underlayer Bundle Features

FIA Homologation: FIA 8856-2018 approved components
Complete Underlayer System: Includes balaclava, shirt, pants, and socks
Soft-Touch Interlock Fabric: Designed for excellent next-to-skin comfort
Regular Fit: Comfortable alternative to compression-style racing underwear
Lightweight Construction: Helps reduce unnecessary bulk underneath a racing suit
Breathable Material: Designed for comfort during demanding track sessions
Fire-Resistant Protection: Nomex construction provides protection for competitive motorsport use
Anti-Static Socks: RW-4 socks combine fire-resistant Nomex construction with anti-static properties
Coordinated Sparco System: Matching RW-4 components designed to work together as a complete racing base layer

Sparco RW-4 Nomex Balaclava

The Sparco RW-4 Nomex Balaclava provides FIA-certified fire-resistant protection while maintaining a soft, breathable feel underneath a racing helmet. The regular-fit construction is designed for long-term comfort without excessive compression.

FIA 8856-2018 approved
Soft-touch interlock fabric
Regular fit
Lightweight and breathable
Designed for extended use underneath a racing helmet

Sparco RW-4 Nomex Shirt

The Sparco RW-4 Nomex Shirt is a comfortable long-sleeve racing base layer made from soft-touch interlock fabric. Unlike compression-style underlayers, the RW-4 uses a regular fit that provides excellent comfort and freedom of movement underneath a racing suit.

FIA 8856-2018 approved
Soft and comfortable interlock construction
Regular fit
Long-sleeve design
Sizes Small through XX-Large
Manufacturer part number: 001782MBI

Sparco RW-4 Nomex Pants

The Sparco RW-4 Nomex Pants provide lightweight lower-body fire protection with the same soft-touch interlock fabric used throughout the RW-4 collection. Their regular-fit design allows comfortable movement inside the cockpit while avoiding the restrictive feel of compression-style underwear.

FIA 8856-2018 approved
Soft-touch interlock material
Regular fit
Lightweight and breathable construction
Sizes Small through XX-Large

Sparco RW-4 Nomex Socks

Sparco RW-4 Nomex Socks complete the underlayer system with lightweight fire-resistant protection for the feet and lower legs. The mid-calf socks use the same soft-touch interlock construction as the rest of the RW-4 range for excellent comfort inside racing shoes.

FIA 8856-2018 approved
Fire-retardant Nomex construction
Anti-static properties
Lightweight and breathable
Soft-touch interlock fabric
Mid-calf length
European shoe sizing
Manufacturer part number: 001516BI

Why Choose the Sparco RW-4 Bundle?

The RW-4 collection is an excellent choice for drivers who want complete FIA 8856-2018 protection without moving into a tight compression-style underlayer. Its soft interlock fabric and regular fit make the RW-4 particularly well suited for track days, club racing, endurance events, and drivers who prioritize comfort during long periods in the car.

Purchasing the complete package also makes it easier to build a coordinated Sparco underlayer system without selecting each component separately.

Sizing Chart

Sparco RW-4 shirts and pants use Sparco racing underwear sizing. Select the appropriate size for the shirt and pants independently when configuring your bundle.

Sparco RW-4 Nomex racing underwear shirt and pants size chart

Sparco RW-4 socks are sized according to European shoe sizes. Use the chart below to convert your normal shoe size.

Sparco RW-4 Nomex racing sock shoe size chart

Frequently Asked Questions

Q: Is the entire Sparco RW-4 bundle FIA approved?
A: Yes. The RW-4 balaclava, shirt, pants, and socks are all FIA 8856-2018 approved.

Q: Is the Sparco RW-4 a compression-fit underlayer?
A: No. The RW-4 shirt and pants use a regular fit, making them a good choice for drivers who prefer a less restrictive feel underneath their racing suit.

Q: What comes in the RW-4 bundle?
A: The package includes one RW-4 balaclava, one RW-4 long-sleeve shirt, one pair of RW-4 pants, and one pair of RW-4 Nomex socks.

Q: Can I select different sizes for the shirt and pants?
A: Yes. Each bundle component can be configured independently so you can select the appropriate size for each item.

Q: How are the Sparco RW-4 socks sized?
A: RW-4 socks use European shoe sizing. Refer to the Sparco shoe size chart above to determine the correct size.

Q: Who is the RW-4 bundle best suited for?
A: The RW-4 is ideal for track-day drivers, club racers, and competitive drivers who want FIA-certified fire protection with a comfortable regular-fit underlayer rather than a compression-style system.