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ANNUAL BIKE SALE
Get free shipping, on most items, with your $50 purchase today! Same day shipping on most orders if placed by 3pm PST.
PLEASE NOTE:
This offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and some exclusions apply.
Oversize Charges
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.
Stock Status
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.
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The Protone is a an intersection of an aerodynamic design and a traditional road helmet. Kask put their best technologies into the Protone for an unparalleled aerodynamic helmet that suits for your need for speed. Looks and function aside, at its' core the Protone features an inner frame that is designed to break apart upon impact. This absorbs and defrays shock. Kask uses their Octo Fit rubber micro dial adjuster to distribute 180-degrees of equal tension. The floating cradle contact points work well with the internal gel pads to sit comfortably on any head shape. Coolmax inner padding and an eco-leather chin strap keep the Protone sitting comfortably on your head.
| Shell Material | Polycarbonate |
|---|---|
| Core Material | EPS |
| Vents | TBA |
| Safety Certifications | EN 1078, CPSC 1203, AS/NZS 2063 |
| Intended Use | Road, Tri |
| Weight | 235g (Size medium) |
| Size | Small | Medium | Large |
|---|---|---|---|
| Head Circumference (in) | 19-11/16" - 22-3/64" | 20-15/32" - 22-53/64" | 23-15/64" - 24-13/32" |
| Head Circumference (cm) | 50cm - 56cm | 52cm - 58cm | 59cm - 62cm |
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP") Lead, 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.
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.
Bike Shipping: Most complete bikes ship for a $99 oversize shipping fee, unless otherwise noted. Free shipping thresholds do not apply to complete bikes.
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.
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:
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