SKU: 81180175043

Troy Lee Designs - D4 Composite Optic MIPS Helmet (MTB)

Sale price$4849.65 Regular price$5388.50
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Troy Lee Designs - D4 Composite Optic MIPS Helmet (MTB)Troy Lee Designs D4 Composite Optic MIPS Helmet (MTB) D4 Composite Optic MIPS Helmet is a Troy Lee Designs mountain bike helmet built for mountain bikers who want full time confidence. The D4 platform is known for downhill focused coverage and a locked in feel when the terrain gets steep and fast. The composite build gives it a balanced mix of feel, durability, and value for regular riding. The Optic treatment gives this helmet a more individual feel

Troy Lee Designs - D4 Composite Optic MIPS Helmet (MTB)

D4 Composite Optic MIPS Helmet is a Troy Lee Designs mountain bike helmet built for mountain bikers who want full-time confidence. The D4 platform is known for downhill-focused coverage and a locked-in feel when the terrain gets steep and fast. The composite build gives it a balanced mix of feel, durability, and value for regular riding. The Optic treatment gives this helmet a more individual feel than a plain solid option. The MIPS-equipped build adds another layer of confidence for riders who prioritize modern helmet technology.

It carries the kind of mountain bike fit that feels settled when speeds rise, but not so heavy or cumbersome that it becomes a distraction on the pedal back up.

Why We Like It: it fits the way a modern MTB helmet should: secure, ventilated, and ready for real terrain.

Why It’ll Work for You: This is a strong pick when you want a mountain bike helmet that feels at home on everything from rough local descents to destination riding.

Variants / Options: multiple sizes and colorways available; check the selector for current stock.

Key Features:
  • Always Evolving. Built with an aerospace shell design and materials, we were able to get the D4 Composite helmet to 1050 grams without sacrificing any strength. Mips® C2 protection system is used to add an additional layer of safety in the event of a fall. For comfort, the D4 Composite routes cooling air through a front air intake system that flows through the polymer center and power grid side mesh keeping your head cooler during the ride. X-static® and XT2® anti-microbial/anti-odor padding keep the inside of the helmet a much nicer place to be.
  • Mips® C2 Rotational Impact Brain Protection System
  • 20 high-flow intake and exhaust ports for maximum ventilation
  • Added EPS and new headform shape for improved impact performance
  • Full incremental sizing for greater range of fitment
  • Strategically placed interior chinbar shock pads for comfort and durability
  • Quick-release and contoured 3D cheek pads for emergency helmet removal
  • Purpose-built internal cavities for audio integration
  • Stainless steel chinstrap D-rings are light and strong
  • Includes TLD drawstring helmet sock
  • Exceeds bicycle certifications: CPSC 1203, CE EN 1078:2002+A1:2012 ASTM F1952-15, ASTM F2032-15, ASTM F2040-11

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81180175043

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Kat Balog
West Palm Beach, US
★★★★★ 5
Comfortable and stylish
This has been wonderful. My son is a game show host and has to wear a blazer to work on game days. He throws this in the back of his car when he’s done and it’s went through a lot and still holds its shape. The colors look great and it’s comfortable. He says it doesn’t feel heavy on and is easy to take care of.
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Reviewed in the United States on June 4, 2026
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RobertK
Los Angeles, US
★★★★★ 5
Nice looking
It was perfect, but the seats were too long. Ordered a large it was pretty true to size.
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Reviewed in the United States on May 21, 2026
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J&J
Massapequa, US
★★★★★ 5
What a great fun purchase!
How fun this jacket was!! Fit true to size. (XL pictured). Made well. Sequins help up well-they didn’t fall off. Bright color. Nice covered buttons with extras! Would definitely buy again. Got tons of compliments at event we attended. Paired great with dress shirt, bow tie, black jeans and gold light up shoes we also found on Amazon. Price point was great compared to others. Husband wears XL and this was very comfortable when sitting and also when buttoned standing up.
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Reviewed in the United States on March 28, 2026
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Gray Ghost
Belleville, US
★★★★★ 5
Jazzy!
Looked fine and fit just right. Sequins do rub the neck a little, if the shirt collar isn't high enough. Really got a jazzy feel to it.
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Reviewed in the United States on May 26, 2024
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Alex McIntire
Waukegan, US
★★★★★ 4
Fit great, good price, and fast shipping for a last minute NYE dinner
Let me start by saying that I had very low expectations, all I truly cared about was getting something “blingy” as fast as possible for a last minute New Years Eve dinner. I was impressed by the speed of arrival, price & floored by the quality. Now of course, this is NOT a tailored $300 jacket, but it was great for our evening. Did not shed any sequins, no problems with wrinkles, and didn’t have any weird smells. My husband said it was comfortable, and he plans to wear it again should the need arise.
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Reviewed in the United States on March 19, 2024

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