Window Net
Representative Photo, actual item may vary
RJS Racing Equipment 10001501 Sprint Car Triangular Roll Cage Window Net Black
RJS Racing Equipment 10000101 Drag Window Ribbon Safety Net SFI 27.1 Black
Representative Photo, actual item may vary
Representative Photo, actual item may vary
What Is a Racing Window Net?
Racing window nets are among the most important — and most overlooked — safety components on any competition vehicle. They are a critical safety component in motorsport vehicles, designed to protect the driver during a crash or rollover, with their main function being to prevent the driver's arms or head from flailing outside the car during an impact. This small yet vital piece of equipment can significantly reduce the risk of serious injury by keeping limbs inside the safety cell and preventing external debris from entering the cockpit.
Window nets became an important part of stock car safety after Richard Petty's violent 1970 crash at Darlington Raceway helped prompt NASCAR to adopt the driver-side window net. Today, a racing window net helps keep the driver's head and arms inside the cockpit during a rollover or side impact while also providing a barrier against debris.
Who Needs a Window Net?
Window nets are not just a visual cue of a race-ready machine — they're a requirement in many forms of motorsport. Whether you're competing in club-level sprints or national-level endurance racing, if your series mandates a roll cage, it's highly likely that a window net will also be required. They're especially common in rally, circuit racing, autocross, and time attack events where safety compliance is closely monitored.
A window net is installed to cover the window opening, designed to protect the driver from having any body part protrude through the window opening in an incident, and it must be mounted to the safety cage structure.
Understanding SFI 27.1 Certification
When shopping for a window net, certification is one of the most important factors to consider. SFI 27.1 is the specification commonly associated with a racing window net. SFI 27.1 only certifies the strength and construction of the net, but each racing series may add its own requirements — most organizations have rules about fitment, coverage, mounting, and release methods. It's also worth noting that all SFI window nets expire two years after the manufacturing date, because UV degradation weakens the webbing over time.
Decorative or street-car window nets aren't necessarily tested for the impact, penetration resistance, construction, and release requirements expected of competition safety equipment. Always verify that any net you purchase meets the requirements of your specific sanctioning body before race day.
Types of Window Nets
Window nets come in several styles to suit different racing applications. Manufacturers produce a great number of window nets in different styles, including mesh nets, string nets, and SFI ribbon nets. Ribbon nets come in a number of predefined sizes, such as head nets, USAC roll cage nets, SFI drag nets, SFI window nets, and SFI oblong window nets. Ribbon-style nets woven from 1-inch nylon webbing are among the most widely used and are approved by most major racing associations.
What to Look for When Buying a Window Net
- SFI 27.1 certification – Required by most sanctioning bodies for competitive racing.
- Correct size and shape – Rectangle, square, trapezoid, and oblong shapes are available; measure your window opening carefully.
- Release mechanism – The integration of a well-designed, accessible, and reliable release mechanism is fundamental to the overall safety provided by the race car window net, as the effectiveness of the entire restraint system is compromised if the driver cannot readily disengage the net in an emergency.
- Mounting hardware – Many nets require a separate installation kit with rods, barrels, and pins; confirm compatibility before purchasing.
- Expiration date – Check the manufacturing date; SFI-certified nets must be replaced every two years.
Top Brands in Window Nets
RJS Racing Equipment is a leading name in motorsport safety, trusted by competitors across all forms of racing. RJS Racing Equipment is a manufacturer of safety equipment for all types of racing. They manufacture a great number of window nets in different styles, including mesh nets, string nets, and SFI ribbon nets in a number of predefined sizes — and can even custom create a ribbon net to your specifications. Their nets and installation kits are designed to meet SFI 27.1 standards, making them a go-to choice for drivers who need reliable, regulation-compliant protection.