Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
in 2 offers
last seen 14 May 2026
The lowest price we last saw for Troy Lee Designs - Helmet D4 Composite MIPS Stealth Gray was $332.35 at J&R Bicycles BMX Super Store, compared across 2 retailers (last seen 14 May 2026). Prices may have changed since.
The all-time low we recorded was $330.93 on 9 May 2026.
Prices last updated 14 May 2026.
Troy Lee Designs - Helmet D4 Composite MIPS Stealth Gray
Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
Improving upon the class-leading D3 helmet was no simple task, but Troy Lee Designs is never one to rest on its laurels. Built with an aerospace-grade composite shell, the new D4 Composite helmet weighs in at just 1050-grams without sacrificing any of the strength of the previous model. MIPS C2 protection system is used to mitigate rotational impacts, while the front air intake system with 24 vents keeps your head cooler than ever during intense rides. Washable X-static and XT2 anti-odor padding keep the inside of the helmet feeling fresh, and there's now an EPP collarbone impact system that helps reduce the forces transferred to this sensitive area.
Last updated at 14/05/2026 23:39:55
Troy Lee Designs D4 MIPS Stealth BMX Race Helmet-Gray, Adult X-Large
Troy Lee Design D4 Composite MIPS Bicycle Helmet - Stealth Gray / XL
originally posted on evogear.com
Helmet is super cool looking, you can't see it in the pictures but the paint is sparkly which I really like. Fit is true to the size chart I ordered a large and it fit my head perfectly. It's a super comfy helmet with great visibility and looks super awesome! I love this helmet.
originally posted on jensonusa.com
I have used a ton of helmets between mountain biking and racing motocross and this is by far the most comfortable helmet I own now. Super light and comfy, highly recommend.
originally posted on troyleedesigns.com
I have not crashed on this helmet yet but I can tell you its super burly compared to the other full faces I have worn. The weight is great! I still need Medium pads to dial this bad boy in but the service TLD has with this purchase was top notch. Feel confident going big! I bought an expensive product that did not fit me and within the day of sending the helmet back, they sent the replacement. I appreciate service like this.
| Biking Type | Mountain |
| Helmet Style | Full Face |
| Helmet Venting | Fixed Venting |
| Audio | Not Included |
| Visor | Yes |
Troy Lee Designs D4 MIPS Stealth BMX Race Helmet-Gray, Adult X-Large
Troy Lee Design D4 Composite MIPS Bicycle Helmet - Stealth Gray / XL
Helmet is super cool looking, you can't see it in the pictures but the paint is sparkly which I really like. Fit is true to the size chart I ordered a large and it fit my head perfectly. It's a super comfy helmet with great visibility and looks super awesome! I love this helmet.
I have used a ton of helmets between mountain biking and racing motocross and this is by far the most comfortable helmet I own now. Super light and comfy, highly recommend.
I have not crashed on this helmet yet but I can tell you its super burly compared to the other full faces I have worn. The weight is great! I still need Medium pads to dial this bad boy in but the service TLD has with this purchase was top notch. Feel confident going big! I bought an expensive product that did not fit me and within the day of sending the helmet back, they sent the replacement. I appreciate service like this.
Never felt safer in a full face. Did lots of research and the d4 had great reviews while also looking the best! My friends always found me because of the red! 10/10
The helmet came as ordered and shipping was quick.One of the screws that holds the visor / peak on was broken off in the hole. Managed to get the broken end out and thankfully the helmet came with spare screws.
I buy a Tld D4 helmet, and is an excellent helmet. Tld is the best and his helmet D4 Mips in white is very beautiful. I recommend Jenson 100%. Totally reliable and the helmet arrived on time. Now I can go to the mountain with my new helmet. Thanks a lot and very good attention. I am very happy with the purchase.
Very happy with the helmet!! I have had a D3 for the past few years which has been great. This D4 is notably lighter and has better ventilation. The color is amazing, looks even better in person. I had forgotten that these helmets run a little different than what I am used to in size. All my motorcycle helmets are large, and I needed an XL in this helmet. EVO was great about helping swap out for the right size. 100% happy with the helmet and would recommend for DH!
There's times you're going to be frugal BUT there's times you shouldn't. Your protective gear shouldn't be one of those times. LOVE IT. It's what I'd expect from TLD. Love the weight, coverage, strength, fit, etc. Just read what this helmet does!
Really nice helmet. Fits exactly as described and worked wonders for me.
The Troy Lee D4 Composite w/ MIPS is everything and more that you come to expect when buying one their products. The fit is perfect and comfortable. The style is uncomparible by many moons. The safety that has been engineered into this design is what drew me to spending up a little. Quality head protection comes at a price but when it relates to your brain, I dont think there is a price that can be too high. Only drawback is the yellow MIPS circle on the back is painted on and not a sticker. I get the purpose of having it but right on the back where it looks like a size tag is maybe not the best spot for it. My opinioon. Overall 5/5 stars!
| Biking Type | Mountain |
| Helmet Style | Full Face |
| Helmet Venting | Fixed Venting |
| Audio | Not Included |
| Visor | Yes |
