Stilo ST5.1 GT Offshore Composite Racing Helmet – Snell SA2020 / FIA 8859-2015

The Stilo ST5.1 GT Offshore Composite Racing Helmet combines professional motorsport protection, lightweight composite construction, and Stilo's legendary modular helmet design in a distinctive high-visibility orange finish.

Developed from the highly successful Stilo ST5 GT platform, the Offshore Composite is designed for offshore powerboat racing while offering the versatility required for GT racing, endurance competition, and other demanding motorsport applications.

Featuring a multi-sandwich fiberglass composite shell, large eyeport, advanced comfort interior, and integrated accessory ports, the ST5.1 GT Offshore provides exceptional flexibility for drivers who require professional racing helmet technology.

This Competition Motorsport configuration is listed with communications pre-installed in the left-side helmet port, providing a convenient starting point for compatible racing intercom systems.

Certified to Snell SA2020 and FIA 8859-2015, the helmet features a clear 3mm anti-fog shield, removable fit padding, noise-attenuating ear cushions, and pre-installed M6 threaded inserts for compatible frontal head restraint anchors.

Stilo ST5.1 GT Offshore Composite Helmet Key Features

• Snell SA2020 and FIA 8859-2015 Certified: Meets established automotive motorsport helmet safety standards for qualifying racing applications.
• High-Visibility Offshore Orange: Bright orange exterior designed for increased visibility in offshore racing environments.
• Multi-Sandwich Fiberglass Composite Shell: Advanced composite construction engineered for strength, impact protection, and comfort.
• ST5 GT Helmet Platform: Developed from Stilo's proven racing helmet design with a taller eyeport and versatile accessory compatibility.
• Wide Eyeport: Provides excellent forward and peripheral visibility.
• Clear 3mm Anti-Fog Shield: Factory-supplied shield with anti-fog treatment to help maintain visibility.
• Center Shield Lock: Convenient central visor locking mechanism.
• Integrated Communication Provisions: Compatible with Stilo racing electronics and communication accessories.
• Left-Port Communications: Pre-installed communications specified for this Competition Motorsport offering.
• Modular Side Ports: Allow installation of compatible communication, hydration, and forced-air accessories.
• Noise-Attenuating Ear Cushions: Help reduce unwanted cockpit noise and improve driver comfort.
• Removable Cheek and Crown Padding: Compatible replacement components allow customized helmet fit.
• Two Shell Sizes: Shell construction designed to reduce unnecessary bulk across the available size range.
• M6 FHR Mounting Inserts: Pre-installed threaded inserts for compatible HANS/FHR post anchors.
• Compatible ST5 Accessories: Supports selected Stilo ST5 shields, aerodynamic accessories, air kits, and replacement components.

High-Visibility Offshore Orange Racing Helmet

The Stilo ST5.1 GT Offshore Composite features a distinctive bright orange shell designed to improve helmet visibility in demanding racing environments.

For offshore powerboat racing, high-visibility equipment can be particularly valuable where drivers and safety personnel operate in challenging conditions.

Beyond its offshore racing applications, the striking orange finish makes the ST5.1 GT Offshore an excellent choice for drivers seeking a distinctive motorsport appearance.

The helmet retains the proven ST5 GT shell geometry, enlarged eyeport, and integrated modular accessory provisions.

Advanced Multi-Sandwich Fiberglass Composite Construction

The ST5.1 GT Offshore uses Stilo's advanced multi-sandwich fiberglass composite construction, engineered to provide a balance of strength, impact energy management, and reduced weight.

The composite shell provides a more economical alternative to Stilo's premium carbon fiber helmets while maintaining the ST5 platform's professional motorsport features.

The helmet uses two shell sizes to provide a more optimized fit across its size range.

Rather than relying on excessive interior padding inside a single oversized shell, Stilo uses different shell dimensions to help improve comfort and minimize unnecessary bulk.

Approximate helmet weights vary by shell size and installed accessories.

Integrated Communication System and Modular Side Ports

One of the most important advantages of the Stilo ST5.1 GT Offshore Composite is its modular accessory platform.

The helmet features integrated side ports that accommodate compatible motorsport communication electronics, hydration accessories, and forced-air cooling equipment.

The Competition Motorsport configuration is specified with communications pre-installed in the left-side port.

This arrangement allows a compatible communication system to be integrated into the helmet without requiring loose external wiring or unnecessary modifications to the shell.

Depending on the selected equipment, the ST5 GT platform can accommodate:

• Compatible Stilo racing communication equipment
• Integrated microphone and earpiece configurations
• Driver and co-driver communication systems
• Optional hydration tubes and drinking valves
• Optional top or side forced-air cooling systems
• Compatible aerodynamic accessories

Communication compatibility: Confirm the installed communication connector and amplifier compatibility before connecting the helmet to an existing racing intercom system. Additional electronics and accessories may be required.

Large Eyeport and Clear Anti-Fog Shield

The Stilo ST5.1 GT Offshore Composite incorporates the larger eyeport design introduced with the ST5 helmet platform.

Compared with previous ST4 models, the taller eyeport provides an expanded field of view and improved visibility of the surrounding racing environment.

The helmet includes a clear 3mm shield with an anti-fog treatment designed to help maintain visibility during changing temperatures and humid conditions.

A center-mounted shield locking mechanism provides convenient visor operation while wearing racing gloves.

The helmet is compatible with selected Stilo ST5 replacement shields, allowing drivers to choose alternative shield finishes and tint options.

Noise-Attenuating Ear Cushions for Driver Comfort

Offshore powerboat racing and enclosed competition vehicles can produce considerable engine, wind, and mechanical noise.

The ST5.1 GT Offshore Composite includes noise-attenuating earmuff cushions designed to help isolate the ears from surrounding noise.

These cushions support driver comfort while providing a suitable foundation for compatible racing communication equipment.

Removable ear cushions also allow drivers to customize their helmet configuration using compatible Stilo replacement components.

Removable Interior Padding and Customizable Fit

Proper helmet fit is essential for driver comfort and safety.

The ST5.1 GT Offshore Composite features removable cheek and crown padding, with compatible replacement components available in different thicknesses.

These options allow drivers to refine their helmet fit without changing the basic shell construction.

Stilo also offers different earmuff cushion options for additional comfort and noise management.

Stilo Fit Tip: Drivers who normally wear a 59cm helmet in another brand may prefer a 60cm Stilo configuration. Helmet fit varies by head shape, so measurements and a proper fitting are recommended.

HANS and Frontal Head Restraint Compatibility

The Stilo ST5.1 GT Offshore Composite includes factory-installed M6 threaded inserts for compatible frontal head restraint anchor hardware.

These inserts allow installation of approved HANS/FHR post anchors for use with compatible head and neck restraint systems.

Important: The standard helmet includes the threaded mounting provisions, but HANS/FHR post anchors are not included unless specifically listed as part of the purchased configuration.

Always follow the restraint manufacturer's installation instructions and the regulations of your racing organization.

Stilo ST5.1 GT Offshore Composite Technical Specifications

• Manufacturer: Stilo Helmets
• Model: ST5.1 GT Offshore Composite
• Manufacturer Part Number: DA0702BF2T Series
• Helmet Type: Full-Face Racing Helmet
• Color: Offshore Orange
• Finish: Gloss
• Snell Certification: SA2020
• FIA Homologation: FIA 8859-2015
• Shell Material: Multi-Sandwich Fiberglass Composite
• Shell Sizes: Two
• Helmet Size Range: 54cm to 64cm
• Shield: Clear 3mm Anti-Fog
• Shield Lock: Center Locking Mechanism
• Replacement Shields: Compatible Stilo ST5 Shields
• Interior: Fire-Resistant Comfort Lining
• Removable Cheek Padding: Yes
• Replaceable Crown Padding: Yes
• Noise-Attenuating Ear Cushions: Included
• Integrated Side Ports: Yes
• Communication Configuration: Left-Side Pre-Installed Communications on CMS Offering
• Forced-Air Compatible: Yes, With Optional Accessories
• Hydration Compatible: Yes, With Optional Accessories
• FHR Mounting: Pre-Installed M6 Threaded Inserts
• HANS Post Anchors: Sold Separately Unless Specified
• Chin Strap: Double D-Ring
• Helmet Bag: Included
• Primary Application: Offshore Powerboat Racing, GT Racing, Road Racing, and Endurance Racing
• Quantity: Sold Individually

Compatible Stilo ST5 Helmet Accessories

The Stilo ST5.1 GT Offshore Composite supports a variety of compatible Stilo ST5 accessories, allowing drivers to personalize their equipment.

• Stilo ST5 replacement racing helmet shields
• Compatible Stilo shield hardware and tear-offs
• Stilo racing communication accessories
• Compatible hydration tubes and drinking systems
• Optional forced-air helmet cooling kits
• Stilo replacement cheek and crown padding
• Compatible noise-attenuating ear cushions
• Approved HANS/FHR post anchors
• Selected Stilo aerodynamic accessories
• Additional Stilo ST5.1 GT Offshore helmet shields available here

Always confirm compatibility with the specific helmet and installed communication equipment before purchasing accessories.

Stilo ST5.1 GT Offshore Helmet Sizing Chart 

 Stilo ST5.1 GT Offshore Helmet Care and Maintenance

Proper cleaning and maintenance help keep your Stilo helmet in race-ready condition.

Exterior Care: Clean the composite shell using a soft microfiber cloth and helmet-safe cleaning products. Avoid abrasive cleaners, solvents, and aggressive chemicals.

Shield Care: Clean the clear anti-fog shield with approved non-abrasive products. Inspect regularly for scratches or damage that may affect visibility.

Interior Care: Clean removable comfort padding according to Stilo's instructions. Allow all components to dry completely before reinstalling.

Communication Equipment: Inspect the installed communication connections regularly. Protect electronic components from excessive moisture and follow the electronics manufacturer's maintenance instructions.

Storage: Store the helmet in a cool, clean, dry environment away from direct sunlight, excessive heat, and chemical exposure.

Stilo ST5.1 GT Offshore Composite Helmet FAQs

Is the Stilo ST5.1 GT Offshore Snell SA2020 certified?
Yes. The ST5.1 GT Offshore Composite carries Snell SA2020 certification. Verify that the certification remains accepted by your racing organization before competition.

Is the Stilo ST5.1 GT Offshore FIA approved?
Yes. Manufacturer specifications list FIA 8859-2015 homologation alongside Snell SA2020. Check the helmet's certification labels and applicable racing regulations.

What is the ST5.1 GT Offshore helmet made from?
The helmet features multi-sandwich fiberglass composite construction designed to provide strength, protection, and comfort.

Is this helmet designed for offshore powerboat racing?
Yes. The Offshore version features a high-visibility orange finish and is designed for offshore racing applications while retaining the versatility of the ST5 GT platform.

Does the helmet include racing communications?
The Competition Motorsport offering is specified with communications pre-installed in the left-side port. Confirm the connector and communication package compatibility with your existing intercom equipment.

Can I install additional communication accessories?
Yes. The ST5 GT platform supports compatible integrated communication accessories and configurations through its modular side ports.

Can I add a forced-air cooling system?
Yes. The helmet supports compatible optional Stilo forced-air cooling accessories.

Can I install a hydration system?
Yes. Compatible hydration accessories can be integrated using the helmet's modular accessory provisions.

Does the helmet include an anti-fog shield?
Yes. A clear 3mm anti-fog shield is included as standard equipment.

Are replacement helmet shields available?
Yes. Compatible Stilo ST5 replacement shields are available separately in selected colors and finishes.

Are the cheek pads removable?
Yes. The helmet features removable cheek and crown padding, with compatible replacement options for fit customization.

Does the helmet include HANS anchors?
The helmet includes factory-installed M6 threaded inserts for compatible HANS/FHR anchor installation. Post anchors are not standard equipment unless specifically included in the purchased configuration.

What sizes are available?
The ST5.1 GT Offshore Composite is offered in sizes ranging from 54cm to 64cm, subject to remaining inventory.

How should I choose my Stilo helmet size?
Measure the circumference of your head approximately one inch above your eyebrows. The helmet should fit securely without excessive movement or painful pressure points. Consult Stilo's sizing recommendations and arrange a fitting whenever possible.

Can I use this helmet for automotive road racing?
Yes, when its Snell SA2020 or FIA 8859-2015 certification meets the specific rules of the racing organization and event.

Race With Confidence in the Stilo ST5.1 GT Offshore Composite

The Stilo ST5.1 GT Offshore Composite SA2020 Racing Helmet delivers the proven performance of Stilo's ST5 GT platform with a high-visibility orange finish, advanced composite construction, integrated communications provisions, and extensive accessory compatibility.

From offshore powerboat racing to GT and endurance competition, its large eyeport, anti-fog shield, customizable interior, and modular design make it a versatile choice for serious racers.

Shipping Notice: This helmet ships with signature confirmation required upon delivery.