Alpinestars Bionic Flex Knee Protector, LXL, BlackRed

Alpinestars

Item #: 69877061

Alpinestars Bionic Flex Knee Protector, LXL, BlackRed

Item #: 69877061

NZD 251

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What Stands Out

Advanced Protection

The Bionic Flex Knee Protector features state-of-the-art protection technology, designed to absorb impact and enhance rider safety, making it ideal for both casual and professional motocross enthusiasts.

Lightweight Design

Crafted for comfort, the lightweight and ergonomic design allows for maximum mobility and flexibility, ensuring that riders can perform at their best without feeling restricted.

Custom Fit

Available in Small/Medium size, the adjustable straps provide a secure and personalized fit, accommodating various body types while maintaining optimal comfort and stability during rides.

Product Details

Elasticated hems and silicon printing prevent slippage and keep the protector secure
New Nucleon Flex Technology protectors are perforated for breathability
Additional side foam padding for more coverage
Abrasion-resistant fabric front panel for increased durability
Ergonomically profiled Nucleon Flex Technology protection with elasticated top strap and silicon hems
Comfort padding with soft-touch stretch mesh prevents heat build-up

Closure Type	Pull On
Special Features	Stretchable
Form Factor	Shell
Item Dimensions	16 x 7 x 4.2 inches (40.6 x 17.8 x 10.7 cm)
Size	Large/X-Large
Item Package Quantity	1
Item Weight	0.99 Pounds (450 grams)
Unit Count	1.0 Count
Material	Plastic
Fabric Type	Silicon
Color	Black/Red
Brand Name	Alpinestars
Age Range Description	Adult
Model Name	Bionic Flex Knee Protector
Global Trade Identification Number	08059175288135
Manufacturer	Alpinestars
Part Number	6505121-13-S/M
Model Number	6505121-13-S/M
Brand	Alpinestars
Age Range (Description)	Adult

Who Should Buy?

Motocross Riders
Ideal for motocross riders who need durable knee protection during high-impact sports and rough terrains.
Trail Cyclists
Beneficial for trail cyclists seeking lightweight and flexible knee protection while navigating rough trails.
Skateboard Enthusiasts
Great for skateboard enthusiasts wanting reliable knee protection against falls and injuries during tricks.

Casual Riders
Not suitable for casual riders who may not require extensive knee protection during light riding activities.

Product Description

Alpinestars Bionic Flex Knee Protector, LXL, BlackRed

About This Item

The Alpinestars Unisex-Adult Bionic Flex Knee Protector is the perfect choice for both men and women who are looking for reliable knee protection during their favorite outdoor activities. This knee protector is designed with ergonomically profiled Nucleon Flex Technology, ensuring that you stay protected without compromising on comfort or freedom of movement. With an elasticated top strap and silicon hems, this knee protector is held securely in position, providing you with the confidence to push your limits. The soft-touch stretch mesh and comfort padding prevent heat build-up, keeping you cool and comfortable even during intense workouts. The Bionic Flex Knee Protector features an asymmetric and lightweight design, making it easy to wear and allowing for unrestricted movement.

Whether you're into motorcycling, cycling, extreme sports, skateboarding, skiing, snowboarding, or off-road adventures, this knee protector is suitable for all these activities and more. Built to last, this knee protector is made with high-quality materials, ensuring durability and long-lasting performance. The Alpinestars brand logo on this knee protector is a symbol of its excellent quality and craftsmanship. Invest in your safety and comfort with the Alpinestars Unisex-Adult Bionic Flex Knee Protector. Stay protected during all your outdoor adventures with this flexible, comfortable, and high-quality knee protector.

Order yours today and experience the difference it makes in your performance and confidence.

Have any Query? Chat with us

Product Buying Guide

The Alpinestars 6505121-13-SM Bionic Flex Knee Protector in BlackRed, Small/Medium size, is designed to provide excellent protection and comfort for motorcycle riders. With its advanced Nucleon Flex Technology protectors, abrasion-resistant fabric, and ergonomic design, this knee protector offers a combination of safety and agility for riders. Continue Reading

Customer Questions & Answers

Question: What is the primary purpose of the Alpinestars Bionic Flex Knee Protector?

Answer: The Alpinestars Bionic Flex Knee Protector is designed to provide robust protection for your knees during motocross, dirt biking, or any extreme sports activities. It features a flexible design that allows for a wide range of motion, ensuring that you can maneuver freely while still being safeguarded. The protector is especially useful in scenarios where falls or impacts are common, giving riders confidence in their safety without compromising on performance.
Question: What are the key features of the Alpinestars Bionic Flex Knee Protector?

Answer: Key features of the Alpinestars Bionic Flex Knee Protector include its advanced design for flexibility, breathable materials for comfort, and strategically placed padding for impact absorption. It uses a lightweight yet durable construction that conforms to the body, ensuring a snug fit while allowing ventilation. This product is perfect for riders looking for a balance of safety and comfort during long rides or competitive events.
Question: Is the Alpinestars Bionic Flex Knee Protector suitable for all riding styles?

Answer: Yes, the Alpinestars Bionic Flex Knee Protector is suitable for a variety of riding styles, including motocross, enduro, and trail riding. Its versatile design accommodates the different movements required in these sports, making it an excellent choice for riders who participate in multiple disciplines. Whether you're racing on the track or cruising through challenging terrains, this protector adapts to your needs.
Question: How does the sizing work for the Alpinestars Bionic Flex Knee Protector?

Answer: The Alpinestars Bionic Flex Knee Protector comes in various sizes, including Small/Medium. To find the right fit, measure your thigh circumference and refer to the sizing chart provided by the manufacturer. A proper fit is crucial not only for comfort but also for maximizing the protective capabilities of the knee guard during use. This ensures you stay secure without feeling restricted while riding.
Question: Can I wear the Alpinestars Bionic Flex Knee Protector over my pants?

Answer: Yes, the Alpinestars Bionic Flex Knee Protector is designed to be worn over pants or under riding gear, depending on your preference. Its slim profile allows it to fit seamlessly with most types of motocross or riding trousers. This flexibility in wearing style enhances overall comfort and usability, especially during longer rides, where maintaining freedom of movement is essential.
Question: What kind of materials are used in the Alpinestars Bionic Flex Knee Protector?

Answer: The Alpinestars Bionic Flex Knee Protector is constructed using high-quality, lightweight, and flexible materials that prioritize both comfort and protection. The outer shell typically features durable polymers, while the inner layers may include moisture-wicking fabrics to keep you dry. These materials are selected not only for their protective qualities but also for their ability to withstand the rigors of extreme sports.
Question: How do I care for my Alpinestars Bionic Flex Knee Protector?

Answer: To ensure the longevity of your Alpinestars Bionic Flex Knee Protector, hand wash it in cold water with mild detergent and allow it to air dry. Avoid using bleach or fabric softeners, as they can damage the materials over time. Regular cleaning is important because it keeps the protector hygienic, especially after strenuous riding sessions, allowing for better performance during your next ride.
Question: Is there a break-in period for the Alpinestars Bionic Flex Knee Protector?

Answer: Typically, the Alpinestars Bionic Flex Knee Protector does not require a significant break-in period due to its flexible design. However, like any protective gear, you might find it beneficial to wear it during short rides to familiarize yourself with its feel and fit. This can enhance comfort and confidence on longer rides, as you'll be accustomed to how the protector moves with your body.
Question: How does the Bionic Flex technology improve knee protection?

Answer: The Bionic Flex technology integrated into the Alpinestars Bionic Flex Knee Protector enhances mobility while ensuring maximum protection against impacts. This technology allows the knee guard to move in tandem with your body's natural motion, reducing the risk of injury while providing substantial shield against external impacts. It’s particularly effective for riders who need not only safety but also the flexibility to perform at their best.
Question: Where can I buy the Alpinestars 6505121-13-SM Bionic Flex Knee Protector - BlackRed SmallMed?

Answer: You can purchase the Alpinestars 6505121-13-SM Bionic Flex Knee Protector at Ubuy in New Zealand. Ubuy offers a wide range of biking gear, ensuring you have easy access to high-quality protective equipment like this knee protector. Shopping at Ubuy guarantees that you find the product you need with the convenience of an online platform.

Alpinestars Knee & Shin Protection 6505121-13-S/M Editorial Review

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Ranee

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“Paint ordered from USA, u buy got the product to me in New Zealand in approx a week”

22 July 2026 · via Trustpilot

NordVPN

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“very speedy delivery,tracking info was superb-best experikence ever!!!”

24 June 2026 · via Trustpilot

Nicholas

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“Love what I received and ordered found that usa clothes are more better quality and look better than the same clothes in my country but are harder to find here recommend ubuy 100%”

22 June 2026 · via Trustpilot

Dneah

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“Product came earlier than expected (shipped from US to NZ), in about 3 weeks. No damages and product was exactly as advertised!”

15-Jul-26 · via Trustpilot

Tania

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“Easy to order, easy to track and the product is great to use. Also, the person-to-person (not automated) phone call I got to confirm that I'd received the item was wonderful ??”

11-Jul-26 · via Trustpilot

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Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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NZD 251

Order now and get it around Tuesday, August 04

QTY:

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Alpinestars Bionic Flex Knee Protector, LXL, BlackRed