SKU: 26618972216

Alpinestars - RK-1 Plasma Knee Brace

Sale price$134.97 Regular price$149.97
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

Alpinestars - RK-1 Plasma Knee BraceAlpinestars RK 1 Plasma Knee Brace Anatomically profiled for all forms of off road riding, the RK 1 PLASMA Knee Brace has been engineered to provide comfortable knee support while still being lightweight, breathable, and protective. This knee brace features a Nucleon PLASMA knee protector encased in an innovative hybrid frame construction, consisting of a flexible composite over injected on a high performance polymer blend to offer superb frame

Alpinestars - RK-1 Plasma Knee Brace

Anatomically profiled for all forms of off-road riding, the RK-1 PLASMA Knee Brace has been engineered to provide comfortable knee support while still being lightweight, breathable, and protective. This knee brace features a Nucleon PLASMA knee protector encased in an innovative hybrid frame construction, consisting of a flexible composite over-injected on a high-performance polymer blend to offer superb frame rigidity while still being flexible at the upper and lower strap areas.

  • This brace provides optimal structural integrity and support while being ultra-lightweight and adaptive, and thus reduces the risk of sustaining injuries to the medial and lateral collateral ligament, the anterior and posterior cruciate ligament, and the lateral and medial meniscus.

  • The replaceable triple segmented knee cups are constructed with a polyurethane outer shell backed with a Nucleon PLASMA protector for the optimum blend of impact protection, flexibility, and scratch resistance.

  • The self-centering knee cup and the strategically positioned upper and lower patella extensions ensure maximum coverage regardless of the flexion or extension angles.

  • The extremely stable, slim-design four-point hinge system perfectly follows the articulation of the knee while the extension stops, which are available in a range from 0 to 30 degrees, assist in setting the brace to the desired maximum opening angle.

  • The stainless-steel bushings in the four-point hinge system have an anti-oxidation treatment.

  • Nucleon PLASMA is a viscoelastic material engineered from bio-based polymers and formed into a structure that is pliable in all directions while maintaining the ability to dissipate impact energies. Lightweight and highly ventilated, the knee protector offers strong impact force dispersion and absorption while ensuring maximum coverage in all riding positions.

  • This knee brace features a Nucleon PLASMA knee protector encased in an innovative hybrid frame construction, consisting of a flexible composite over-injected on a high-performance polymer blend to offer superb frame rigidity while still being flexible at the upper and lower strap areas.

  • The replaceable triple segmented knee cups are constructed with a polyurethane outer shell backed with a Nucleon PLASMA protector for the optimum blend of impact protection, flexibility, and scratch resistance.

  • Constructed from USDA certified bio-based eco-friendly and sustainable impact absorbing material.

  • Soft-touch thermoformed padding ensures the highest levels of rider comfort while keeping the knee brace securely in position. Replaceable as a spare part.

  • Soft-touch thermoformed condyle padding comes in different thicknesses for a customized fit. Replaceable as a spare part.

  • Equipped with four individual straps backed with a non-slip material to ensure the knee brace remains securely in position while riding.

  • High tensile strength buckles are robust while still being flexible for easy strapping and adaptivity.

  • Central buckles are easily locked into the closed position by a keyhole snapping system.

  • Inner-knee central buckles are mounted internally inside the frames to avoid contact with the bike.

  • The CE-certified Level 1, RK-1 PLASMA Knee Brace provides optimal structural integrity and support while being ultra-lightweight and adaptive, and thus reduces the rider’s risk of sustaining injuries to the medial and lateral collateral ligament, the anterior and posterior cruciate ligament, and the lateral and medial meniscus.

  • Constructed with a polyurethane outer shell, the replaceable triple segmented knee cups are backed with a Nucleon PLASMA protector for the optimum blend of impact protection, flexibility, and scratch resistance.

  • According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply:

  • Knee Protector: EN 1621-1:2012 LEVEL 1

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: 26618972216

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4.6 ★★★★★
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C
Verified Purchase
C Vazquez
Massapequa, US
★★★★★ 5
Quality jacket
Beautifully made, often get compliments about it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
Elegant fit
Nice looks. Good fabric. Elegant fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026
D
Verified Purchase
Danni
Battle Creek, US
★★★★★ 5
Great!
Color: Black, Size: Large
I needed a blazer for a last second professional presentation and it looked great! my peers thought I rented this since the quality looked very good. I love the inner pocket and it fits pretty good! the color also goes very well with the rest of my clothes, it’s not shiny at all!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2025
K
Verified Purchase
Kim
Belleville, US
★★★★★ 3
Runs small good quality
Bought for my husband to wear to an event however was to tight in the arms. He has bigger biceps so this is not for someone who works out. It does seem to be a nicely made jacket for the price though. The material was soft, not many wrinkles. A quick light steam would take them out. The color was spot on from what the photos showed and looked great with the vest we purchased from the company. Layering was no issue with its weight. As always, returns were easy. Thanks Amazon
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 18, 2025
D
Verified Purchase
D S
Houston, US
★★★★★ 4
good quality, value; watch the sizing
Color: Black, Size: Large
quality is good, especially for the the price. the built-in pocket square i like very much; it gives an automatic ''flare'' to the look and with no effort on your part. only thing iffy was the sizing. this item, like many entry-level blazers, are size-marked like a casual shirt in small, medium, large; not the typical 34, 36, etc. i wear large casual but smaller suit and because of the manufacturer's labeling went with large. result was that the jacket was too big. i didn't exchange it but probably could do size small (or actually try multiple sizes). i would buy again if i could find my proper size
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Reviewed in the United States on July 22, 2025

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