Whipping tabletops, leaning into and accelerating hard out of berms, and straight-lining a rocky and rooty chute - mountain biking is thrilling when it's all going well. It's when things don't quite go to plan where the fabulous D4 Composite Stealth Helmet comes in. Should you hit the dirt then it's there to keep your head protected and you quickly back on your bike with minimal fuss. The first line of defence is the remarkably light but tough TeXtreme® Spread tow carbon fibre shell. This wraps around an impact-absorbing EPS foam core - the forces from any crash are absorbed and dissipated by this core, offering superb protection. Durability and strength are also enhanced by the way of In-mould polycarbonate around the vent openings and exposed EPS. This is a lid up to the demands of daily mountain biking. Meanwhile, breakaway screws prevent the visor from catching on the ground and help prevent neck injuries. Lastly, MIPS (Multi-directional Impact Protection System) provides excellent brain-injury prevention. MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head. Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head. Shop All MIPS Helmets Click Here With this level of protection and head protection, you may think ventilation is compromised. But not a bit of it. Troy Lee have carefully engineered the outer vents and inner channels to work with the headliner so fresh air is free to circulate and keep you cool. Inside the D4 you'll enjoy the brilliant XT2 washable liner. Lesser helmets will use standard foam liners which after continued use can soon start to feel uncomfortable and even itchy. Not the XT2. This anti-bacterial liner ensures no nasty odours or itchiness, and being washable you'll be able to keep it fresh for every ride. Unrivalled protection, impressively lightweight but durable construction and excellent ventilation combine to make the D4 the best TLD full-face helmet yet.
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)
Using TeXtreme Spread Tow carbon fibre reinforcements in the shell, the TLD D4 Carbon Freedom helmet has helped reduce down the weight of the full face helmet by almost 50 grams without sacrificing any strength. Despite the loss in weight, Troy Lee were able to strategically add EPS (expanded polystyrene) to increase strength and durability. The integrated MIPS (multi-directional impact protection system) brain protection system is designed to reduce rotational motion transferred to the brain from angled impacts to the head. The D4 package is rounded out with lightweight titanium D-rings, collarbone suspension system and quick release XT2 3D cheek pads and X-Static washable liner. Size Guide: X-Small: 20.8" - 21.2" (53cm - 54cm) Small: 21.6" - 22" (55cm - 56cm) Medium: 22.4" - 22.8" (57cm - 58cm) Large: 22.8" - 23.2" (58cm - 59cm) X-Large: 23.6" - 24" (60cm - 61cm) XX-Large: 24.4" - 24.8" (62cm - 63cm)