The D3 is one of Troy Lee Design's flagship products, as well as often being Troy Lee's personal canvas for the designs which he is known for. If you pay attention to mountain biking, you've seen custom painted D3s or Troy Lee D3 Carbons on the heads of Zink, Peat, Semenuk, Rheeder and Gwin to name a few. If you don't know who these guys are, they are dudes who ride bikes better than the rest of us. Way better. This iconic helmet wins our Editors' Choice Award for the best downhill full-face mountain bike helmet not because of the pros who wear it, but because we feel that this stylish brain case is the best fiberglass full-face bike helmet money can buy.
This helmet took top scores in our protection and durability tests. Its visor is the best we've ever used. (Actually, it has the two best visors, because it comes with a color matched spare.)
Like most of Troy Lee Helmets, the price varies slightly with the colorway. They range from $375 for a more basic design to $395 for a replica of Cam Zink's custom colorway. Either way, it is the most expensive helmet in our field of non-carbon full-face helmets. In fact, it is nearly twice as expensive as its next closest competitor.
It is available in five sizes, which make it more likely you will get a dialed fit. We found that this helmet has a rounder than average fit. For this reason, we highly recommend trying on this helmet before you buy.
If $375 for a full-face is way out of your league, then see the Bell Transfer-9, which retails for just $200 and scored only slightly lower. If light weight is a priority, then consider the Giro Cipher, which is another good option at the $200 price point.