Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
in 3 offers
Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
Size
Last updated at 06/11/2025 08:52:52
Troy Lee DesignsD4 Composite Helmet with Mips STEALTH GRAY Bmx Mountain Bike Downhill
Free delivery between 12–15 Nov
Troy Lee Designs D4 Composite Full Face Helmet for DH, MTB & BMX
Delivery between 10–14 Nov $15.52
See 8 historical offers
Troy Lee Designs D4 MIPS Stealth BMX Race Helmet-Gray, Adult X-Large
Troy Lee Designs D4 Composite MIPS Helmet Matrix Blue New 2023
Delivery between 29 Oct – 4 Nov $30.56
TLD 2023 D4 Composite MIPS Matrix Blue Helmet
Free delivery between 15–25 Oct
Troy Lee Designs - 21 D4 AS COMPOSITE HELMET MED / LGE / STEALTH GREY
Free delivery between 16–21 Oct
Troy Lee Designs D4 Composite Helmet - Stealth Grey - XLarge - XXLarge
30-day returns
Troy Lee Designs D4 Composite Mips MTB Helmet Stealth Gray - Size XL/XXL | Rhythm Snowsports
Delivery between 17–27 Oct $10
TLD 23 D4 AS Composite MIPS Helmet Grey | Shop at LUXBMX Grey / XS-S
Delivery $11.99
| Core Material | EPS Foam |
| Shell Material | Aerospace Composite |
| Adjustable Fit | No |
| Ventilation | 24 Vents |
| MIPS Protection | Yes |
Troy Lee Designs D4 Composite Stealth Helmet Grey
Delivery $76.24
Troy Lee DesignsD4 Composite Helmet with Mips STEALTH GRAY Bmx Mountain Bike Downhill
Free delivery between 12–15 Nov
Troy Lee Designs D4 Composite Full Face Helmet for DH, MTB & BMX
Delivery between 10–14 Nov $15.52
See 8 historical offers
Troy Lee Designs D4 MIPS Stealth BMX Race Helmet-Gray, Adult X-Large
Troy Lee D4 Composite Race Helmet - Stealth Grey X Small
Delivery $71.03
Troy Lee Designs D4 Composite MIPS Helmet Matrix Blue New 2023
Delivery between 29 Oct – 4 Nov $30.56
TLD 2023 D4 Composite MIPS Matrix Blue Helmet
Free delivery between 15–25 Oct
Troy Lee Designs - 21 D4 AS COMPOSITE HELMET MED / LGE / STEALTH GREY
Free delivery between 16–21 Oct
Troy Lee Designs D4 Composite Helmet - Stealth Grey - XLarge - XXLarge
30-day returns
Troy Lee Designs D4 Composite Mips MTB Helmet Stealth Gray - Size XL/XXL | Rhythm Snowsports
Delivery between 17–27 Oct $10
TLD 23 D4 AS Composite MIPS Helmet Grey | Shop at LUXBMX Grey / XS-S
Delivery $11.99
| Core Material | EPS Foam |
| Shell Material | Aerospace Composite |
| Adjustable Fit | No |
| Ventilation | 24 Vents |
| MIPS Protection | Yes |
