Bike Helmets

The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the Troy Lee D4 Polyacrylite MTB Full Face Helmet the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee D4 Polyacrylite MTB Full Face Helmet Highlights-Mips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension

The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the Troy Lee D4 Polyacrylite MTB Full Face Helmet the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee D4 Polyacrylite MTB Full Face Helmet Highlights-Mips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension

The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the Troy Lee D4 Polyacrylite MTB Full Face Helmet the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee D4 Polyacrylite MTB Full Face Helmet Highlights-Mips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension

The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the Troy Lee D4 Polyacrylite MTB Full Face Helmet the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee D4 Polyacrylite MTB Full Face Helmet Highlights-Mips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension

The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the Troy Lee D4 Polyacrylite MTB Full Face Helmet the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee D4 Polyacrylite MTB Full Face Helmet Highlights-Mips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension

Always EvolvingIt wasn't easy to improve upon the class-leading design and function of our D3 helmet, but we made it happen. Built with an aerospace shell design and materials, we were able to get the D4 Composite helmet to 1050 grams without sacrificing any strength. MIPS C2 protection system is used to add an additional layer of safety in the event of a fall. For comfort, the D4 Comp routes cooling air through a front air intake system that flows through the polymer center and power grid side mesh keeping your head cooler during the ride. X-static® and XT2® anti-microbial/anti-odor padding keep the inside of the helmet a much nicer place to be. Key Features: Intended for BMX, Downhill

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, the Troy Lee Designs D4 Mips Helmet range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, the Troy Lee Designs D4 Mips Helmet range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, the Troy Lee Designs D4 Mips Helmet range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, the Troy Lee Designs D4 Mips Helmet range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, the Troy Lee Designs D4 Mips Helmet range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, the Troy Lee Designs D4 Mips Helmet range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial

The reigning king of full-face helmets, theTroy Lee Designs D4 Mips Helmetrange expands with aPolyacrylitemodel packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.Troy Lee Designs D4 Mips Helmet HighlightsMips® C2 Rotational Impact Brain Protection SystemAdvanced Polyacrylite shell constructionFront air intake system, with high flow through polymer center and power grid side meshCollarbone Suspension SystemBreakaway visor screwsAnti-microbial