SKU: 28850366111

Troy Lee Designs - D4 Polyacrylite Fifty-50 MIPS Helmet (MTB)

Sale price$112.05 Regular price$124.50
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Troy Lee Designs - D4 Polyacrylite Fifty-50 MIPS Helmet (MTB)Troy Lee Designs D4 Polyacrylite Fifty 50 MIPS Helmet (MTB) D4 Polyacrylite Fifty 50 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. The Polyacrylite shell helps keep the price more approachable while still delivering the coverage riders expect. The Fifty 50 treatment gives this helmet a more individual feel

Troy Lee Designs - D4 Polyacrylite Fifty-50 MIPS Helmet (MTB)

D4 Polyacrylite Fifty-50 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. The Polyacrylite shell helps keep the price more approachable while still delivering the coverage riders expect. The Fifty-50 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.

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 balances mountain bike protection with the kind of ventilation and fit that keeps longer rides from feeling like work.

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:
  • The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.
  • Mips® C2 Rotational Impact Brain Protection System
  • Advanced Polyacrylite shell construction
  • Front air intake system, with high flow through polymer center and power grid side mesh
  • Collarbone Suspension System
  • Breakaway visor screws
  • Anti-microbial padding
  • Quick release contoured 3D cheek pads for anatomically optimized fit

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: 28850366111

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4.7 ★★★★★
Based on 8 reviews
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T. Lindsay
San Leandro, US
★★★★★ 4
Love the military time feature & indiglo!
This is a great watch. Large face. I think I’ll have to change the band out quicker than I had hoped but I still think for the price it is great. Also, the pin snapped out randomly the second day I wore it while doing chores but it was easy to put back in since the pin was easy to find (thankfully). Still like it a lot for the features.
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Reviewed in the United States on April 19, 2019
J
Verified Purchase
jam
Whiting, US
★★★★★ 5
Love! Wear it all the time!
Always love these, own several!
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Reviewed in the United States on February 13, 2026
D
Verified Purchase
Dej
Dallas, US
★★★★★ 5
Attractive and reliable
Very attractive color. Numbers are large enough to read. Honestly don’t know if watch is completely water resistant because have not had the opportunity to find out. Love that watch lights up!
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Reviewed in the United States on March 18, 2021
R
Verified Purchase
ROBERT S.
West Palm Beach, US
★★★★★ 5
Wife loved it!
Great summer watch! Gave a gift. Wife loved it. Pretty band, nice face. Very reasonable price for what you get. Timex seldom disappoints.
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Reviewed in the United States on August 23, 2021
D
Verified Purchase
Dani Katagasm
Massapequa, US
★★★★★ 5
Easy to use/see
My eyesight is bad enough I cant use my cellphone at all without glasses. The clean display face and awesome backlight on this mean I can see the time any time of day or night without my glasses or a light. Super simple to use: Pull out the plastic protector on the crown Pull the crown out 1 click to set/back in when done Push on the crown for a REALLY good back light
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Reviewed in the United States on March 5, 2021

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