SKU: 31148572186

Troy Lee Designs - Lightning D4 Carbon MIPS Helmet (MTB)

Sale price$148.50 Regular price$165.00
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Shipping Estimate
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

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Description

Troy Lee Designs - Lightning D4 Carbon MIPS Helmet (MTB)Troy Lee Designs Lightning D4 Carbon MIPS Helmet (MTB) Lightning D4 Carbon MIPS Helmet is a Troy Lee Designs mountain bike helmet built for trail riders. The D4 platform is known for downhill focused coverage and a locked in feel when the terrain gets steep and fast. Carbon construction points to a lighter, more premium feel that works well for riders chasing high end performance. In the Lightning colorway, it brings a strong visual identity without

Troy Lee Designs - Lightning D4 Carbon MIPS Helmet (MTB)

Lightning D4 Carbon MIPS Helmet is a Troy Lee Designs mountain bike helmet built for trail riders. The D4 platform is known for downhill-focused coverage and a locked-in feel when the terrain gets steep and fast. Carbon construction points to a lighter, more premium feel that works well for riders chasing high-end performance. In the Lightning colorway, it brings a strong visual identity without losing the performance-first focus of the helmet. The MIPS-equipped build adds another layer of confidence for riders who prioritize modern helmet technology.

The fit is aimed at riders who need their MTB helmet to stay composed on technical descents while still feeling comfortable during transitions, climbs, and longer days outside.

Why We Like It: it gives riders a stable feel on rough descents without turning every climb into a chore.

Why It’ll Work for You: It works well for riders who split time between trail loops, enduro stages, and lift-served laps and want one mountain bike helmet that feels ready for all of it.

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

Key Features:
  • MIPS brain protection system, reduces rotational forces to the brain in some crash scenarios
  • TeXtreme® Spread Tow carbon fiber shell
  • Three shell sizes to more accurately fit a variety of head sizes and rider ages, improving overall safety
  • Anatomical "3D” contoured cheek pads with emergency release system for EMS responders
  • Removable snap-in, washable comfort liner with Coolmax® and Dri-lex® moisture-wicking materials
  • Super light titanium D-rings save weight and have increased material tensile strength
  • 1000g
  • CPSC 1203*, CE EN1078*, ASTM F1952-DH, ASTM 2032-BMX. *Varies by regional standards

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: 31148572186

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4.1 ★★★★★
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Stacy Thrailkille
Houston, US
★★★★★ 5
My favorite ❤️
Size: 10, Color: Chestnut
My favorite so far!!! True to size, and very comfortable. Plus, stylish and goes with so many outfits.
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Reviewed in the United States on April 25, 2026
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Amy E Hickman
Pawtucket, US
★★★★★ 5
Very Comfy!
Size: 10, Color: Chestnut
Awesome shoes! Love the style and quality. If you have wide feet go one size up.
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Reviewed in the United States on April 16, 2026
L
Verified Purchase
LAPD
Alexandria, US
★★★★★ 3
Improper fit
Size: 10, Color: Chestnut
Cute shoe just uncomfortable fit
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Reviewed in the United States on April 6, 2026
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Verified Purchase
Debra Martin
Pawtucket, US
★★★★★ 5
Great
Size: 8.5, Color: Red Pepper
True to size; wonderfully comfortable.
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Reviewed in the United States on June 8, 2026
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Verified Purchase
Lena Y.
Lexington, US
★★★★★ 5
Nice so far.
Size: 6.5, Color: Molasses
Comfy. They were tight the first day across the toes but as I've worn them a couple times they are loosening up. The sole is forming to my foot. These are very much like Doc Martin's from the early 2000s. Not sure about quality since I haven't had them for very long.
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Reviewed in the United States on March 27, 2026

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