Stilo ST6 KRT Composite Kart Helmet | FIA 8878-2024 & Snell K2025

The Stilo ST6 KRT Composite Kart Helmet is the accessible entry point into the ST6 KRT range — bringing the same FIA 8878-2024 and Snell K2025 dual certification and ST6 platform engineering to kart racers who want proven protection at a more accessible price point. Built from a multi-sandwich pre-preg fibre composite shell across 9 sizes (54–64cm), it delivers a precise, close fit for a wide range of head sizes.

If you want the lightest possible shell and maximum performance, step up to the ST6 KRT Carbon. If the Composite meets your needs and budget, it is a fully certified, genuinely capable kart helmet backed by the same Stilo engineering.

Why the ST6 KRT Composite

• Dual certified: FIA 8878-2024 & Snell K2025 — the highest current standards for senior karting, recognised by Kartsport NZ and Karting Australia
• Multi-sandwich pre-preg fibre composite shell — engineered composite construction delivering strong, reliable protection
• ST6 platform — advanced ventilation, premium padding, and precision fit engineering from Stilo's flagship racing helmet range
• Two shell sizes — small shell (54–58cm, ~1,340g) and large shell (59–64cm, ~1,570g) for a genuinely close fit
• 9 sizes (54–64cm) — one of the widest size ranges available in a certified kart helmet
• Entry point to the ST6 KRT range — same dual certification as the Carbon at a more accessible price

Who Is This Helmet For?

• Senior and open class kart racers requiring FIA 8878-2024 or Snell K2025 certified head protection
• Competitive kart racers in NZ and AU who want dual-certified protection at a more accessible price than the Carbon
• Racers who prioritise certification and fit over minimum weight

Kartsport NZ & Karting Australia Compliance

The ST6 KRT Composite holds dual type approval: FIA 8878-2024 and Snell K2025. Both Kartsport NZ and Karting Australia recognise these standards for eligible senior and open karting classes. Always confirm the specific standard required for your event, class, and series with your organiser before purchasing.

Specifications

How Does It Compare?

Frequently Asked Questions

Is the ST6 KRT Composite legal for karting in NZ and AU?

The ST6 KRT Composite holds dual type approval: FIA 8878-2024 and Snell K2025. Both Kartsport NZ and Karting Australia recognise these standards for eligible senior/open karting classes. Always confirm the specific standard required for your event with your organiser before purchasing.

What is the shell weight?

Small shell (54–58cm): approximately 1,340g (±30g). Large shell (59–64cm): approximately 1,570g. Both use multi-sandwich pre-preg fibre composite construction.

What is the difference between the ST6 KRT Composite and the ST6 KRT Carbon?

The Composite uses a pre-preg fibre composite shell (1,340–1,570g, NZD 1,249). The Carbon uses a P-Matrix full carbon fibre shell (1,150g, NZD 2,210). Both hold FIA 8878-2024 and Snell K2025 dual certification.

How do I choose the right size?

Measure the widest circumference of your head above the ears. When in doubt, size down. Contact Aaron Harris on +64274499654 or aaron@harriscomms.co.nz for fitting advice.

Does this helmet include intercom electronics?

No — the ST6 KRT Composite is a kart-specific helmet without integrated intercom electronics.

All helmets are genuine Stilo stock sourced directly through Stilo's supply chain, covered by Stilo's manufacturer warranty, and dispatched fast across NZ and AU from Harris Race Radios — NZ & AU's most experienced Stilo specialist.

Why Buy From Harris Race Radios?

Rex Harris — qualified Radio Telecommunications Engineer, Approved Radio Certifier (NZ RSM and AU ACMA), and motorsport specialist since 1975 — built one of Australasia's most respected motorsport businesses starting at the track. Aaron Harris, Rex's son, is an active racing driver and race engineer: Bathurst 1000, Bathurst 12 Hour, Barcelona 24 Hour (1st in class, 2013), BMW Race Driver Series Champion (2011), race engineer for Earl Bamber Motorsport, TekworkX, Matt Stone Racing, and Porsche Carrera Cup Australia/Asia-Pacific/NZ. Aaron holds a MSNZ Licence Examiner appointment for helmets, racewear, FHR and HANS.

Charlie Harris — Aaron's son, engineering student at the University of Canterbury — has won NZ Karting championships. Danaka Harris, Aaron's daughter, has raced karts for four years with Aaron as her race engineer. When you buy from Harris Race Radios, you're getting advice from a family that has worn, fitted, and raced in these helmets — not just sold them.

Contact Aaron: +64274499654 | aaron@harriscomms.co.nz