The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model delivering premium safety and comfort at an accessible price point. Engineered for serious riders, it features MIPS® C2 brain protection technology, strategic air intake vents for optimal airflow, and Troy Lee Designs' signature anatomical fit that sets the standard in mountain biking. Maximum protection without compromise.
KEY FEATURES
Mips® C2 Rotational Impact Brain Protection System
Advanced Polyacrylite shell construction
Front air intake system, with high flow through polymer center and power grid side mesh
Collarbone Suspension System
Breakaway visor screws
Anti-microbial padding
Quick release contoured 3D cheek pads for anatomically optimized fit
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
<div class="dynamic-checkout__content" id="dynamic-checkout-cart" data-shopify="dynamic-checkout-cart"> <shopify-accelerated-checkout-cart wallet-configs="[{"supports_subs":true,"supports_def_opts":false,"name":"shop_pay","wallet_params":{"shopId":27030814790,"merchantName":"Crooze","personalized":true}},{"supports_subs":false,"supports_def_opts":false,"name":"paypal","wallet_params":{"shopId":27030814790,"countryCode":"AU","merchantName":"Crooze","phoneRequired":true,"companyRequired":false,"shippingType":"shipping","shopifyPaymentsEnabled":true,"hasManagedSellingPlanState":null,"requiresBillingAgreement":false,"merchantId":"DB7GEBV6JDYJJ","sdkUrl":"https://www.paypal.com/sdk/js?components=buttons\u0026commit=false\u0026currency=AUD\u0026locale=en_US\u0026client-id=AexZEtAxk09Ncgj6FSWFFyGKbxxAZ_LTyJ2DPdJWl1YUlecinmc5AfIaRF2qYjWlusWahlzz6SVkY5Ci\u0026merchant-id=DB7GEBV6JDYJJ\u0026intent=authorize"}}]" access-token="2dc5c76303844171dac7e13bc3a4fcf0" buyer-country="AU" buyer-locale="en" buyer-currency="AUD" shop-id="27030814790" cart-id="87dbfa844d801ababe217c285a7633a2" enabled-flags="["ce346acf"]" > <div class="wallet-button-wrapper"> <ul class='wallet-cart-grid wallet-cart-grid--skeleton' role="list" data-shopify-buttoncontainer="true"> <li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li><li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li> </ul> </div> </shopify-accelerated-checkout-cart> <small id="shopify-buyer-consent" class="hidden" aria-hidden="true" data-consent-type="subscription"> One or more of the items in your cart is a deferred, subscription, or recurring purchase. By continuing, I agree to the <span id="shopify-subscription-policy-button">cancellation policy</span> and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. </small> </div>
FREE SHIPPING ON THIS ITEM*