Use code HOLIDAY20 for 20% OFF one full-priced item*
FREE SHIPPING over $50
Free Shipping Over $50*
Get free shipping, on most items, with your $50 purchase today! Same day shipping on most orders if placed by 3pm PST.
This offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and some exclusions apply.
Some large and/or heavy items are subject to additional oversize charges that are separate from standard shipping costs.
Bike Build Process
All bikes are built, tested, tuned, and ready to ride upon shipment. The bike build process typically takes 2-3 days to complete depending on the bike model and the complexity of the build.
Orders for in-stock items placed by 3PM PST usually ship on the same day. Orders that include special-order or backordered items may be subject to shipping delays depending on product availability. Refer to estimated delivery times in cart when selecting shipping options.
We strive to get you the gear you want at a competitive price. If you find an item we offer from a competitor at a lower price, let us know. We will do our best to instantly match their price. To qualify for the Price Match, your purchase must meet the following conditions:
Price Matches may only be honored on identical items. The product must be the same make and model (i.e., the same size, color, year, etc.).
The identical items must be in stock and ready for immediate delivery at the competing dealer.
Price Matching voids any currently advertised Jenson USA promotions or special offers (i.e. free shipping, free headset...). If the competitor offers free shipping on the specific item, Jenson USA will still match the price and free shipping offer.
The product must be brand new. We do not Price Match refurbished or used items.
Our Price Match Policy is valid only for qualified Internet retailers.
The competing dealer must be an authorized US retailer for the brand. This means that the manufacturer lists this dealer as an authorized and official retail web site.
The competing online retailer's principle business must be located within the United States.
Our Price Match Policy does not combine with any competitor’s coupons, rebates, promotional offers, or product-combo deals on your order.
Some items may not be eligible for price match due to manufacturer pricing requirements.
The Price Match Policy is subject to change at any time.
If you have any questions regarding a Price Match, one of our Gear Advisors will be happy to lend you expert guidance via phone, email, or chat.
Price Matches made post-purchase will be refunded via gift card
The Troy Lee Designs D4 Composite Helmet further improves the class-leading D3 helmet with a new lighter weight, MIPS technology, and increased airflow. The D4 Composite tips the scales at a measly 1050g and comes in six sizes for a nearly custom fit. The aerospace-grade outer shell shaves weight, while a whopping 16 high-flow intake and outlet ports increase airflow during hot days. The X-static and XT2 padding is antimicrobial and wicks away moisture to keep the funk at bay and keep you cool and comfortable. The updated EPS and improved head form shape increase resistance to impacts, while the integration of MIPS C2 protection helps to protect against rotational forces—letting you test your limits with confidence.
MIPS C2 technology reduces rotational forces from certain types of impacts without compromising airflow
16 high-flow vents for intake and outlet of air, with side mesh and a polymer center channel to keep you cool and comfortable
Aerospace composite outer shell keeps the weight down without sacrificing protection
Stainless steel D-ring closure for durable security
X-static and XT2 antimicrobial padding keeps the funk at bay
Improved head form shape and additional EPS for even more protection compared to previous versions
Stainless Steel D-Ring
CPSC 1203, CE EN 1078:2002+A1:2012 ASTM F1952-15, ASTM F2032-15, ASTM F2040-11
Head Circumference (cm)
53 - 54
55 - 56
57 - 58
58 - 59
60 - 61
62 - 63
Head Circumference (in)
20 7/8" - 21 1/4"
21 5/8" - 22”
22 3/8" - 22 3/4"
22 3/4" - 23 1/4"
23 5/8" - 24"
24 3/8" - 24 3/4"
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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Q & A
Most items SHIP SAME DAY if ordered by 3pm PST and FREE SHIPPING on orders over $50. Please note that oversize charges may still apply on some heavy or large items and free shipping does not apply to PO Boxes.
1-day free standard Shipping on most orders to California, 2-day free standard Shipping on most orders to Nevada, Arizona, & Utah. Other states can expect delivery within 3 to 5 days.
Jenson USA ships worldwide, including APO/FPO addresses. For a more specific shipping quote and transit time estimate, simply add the items you are interested into your shopping cart and look for the "Shipping Options" box at the top of the cart page. You don't have to login or create an account to see shipping charges and time in transit estimates.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your address, we can accept your foreign credit card and ship it to a US address for you.
Due to manufacturer restrictions, this product cannot be shipped to the following locations:
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