Troy Lee Designs · GP Mono
Troy Lee Designs GP Mono
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Design Concept & Background
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The Troy Lee Designs GP Mono helmet is engineered for riders who demand a perfect balance of performance, safety, and style on the dirt track. Built with a robust, high-impact polycarbonate shell, this helmet provides exceptional durability while maintaining a lightweight profile that reduces neck fatigue during long, intense riding sessions. Its advanced ventilation system features strategically placed intake and exhaust channels, ensuring consistent airflow to keep you cool and focused when the action heats up. The interior is lined with the advanced 3D Max-Dry system, which wicks moisture three times faster than standard materials, ensuring a dry and comfortable fit. Designed with an intermediate oval shape, the GP Mono offers a secure, ergonomic fit that accommodates a wide range of head shapes. Whether you are navigating technical trails or competing in high-stakes motocross, the GP Mono delivers the vision, protection, and aerodynamic stability required by professional and amateur riders alike. Experience the legendary Troy Lee Designs commitment to quality and innovation with a helmet that is as tough as the terrain you conquer.
Key Highlights:
Rider Profile & Intended Use
Where to buy
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Amazon (US)
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Price History & Trends
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Product Concept & Specifications
Troy Lee Designs (United States)Engineering & Technical Analysis
The Troy Lee Designs GP Mono helmet features a polycarbonate shell for durability and impact resistance, ensuring solid safety performance. Its intermediate oval head shape provides a comfortable, secure fit, while advanced ventilation channels enhance airflow to keep riders cool during intense rides. The helmet's design balances protection and breathability, making it ideal for dirt and MX riding.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Interactive Size & Fit Finder
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Part numbers
| Product style | MFR. product # | SKU | Availability |
|---|---|---|---|
| Gloss Black / | — |
TRO-GPMO-BLK | instock |
| Anthracite / | — |
TRO-GPMO-GRE | instock |
| Street TC-3 / | — |
TRO-GPMO-STR | instock |
| Solid Red / | — |
TRO-GPMO-SOL | instock |
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Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.