Name: Alpinestars Bionic 5s Youth Knee
Brand: Alpinestars
SKU: 2704-0645
Price: 394.95 USD
Availability: InStock

Alpinestars Bionic 5s Youth Knee - Motor Psycho Sport

$ 394.95

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Size

ONE SIZE

Color

Black/Red

Quantity

Authorized Dealer

No Sales Tax, except California

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We are an Authorized Dealer for all the Brands that we sell. Below are the links to our distributors who authorize us to carry what we sell.

Helmet House is our distributor for...

SHOEI - HJC - ALPINESTARS - CORTECH - TOURMASTER - SENA - SIDI

https://helmethouse.com/dealers/4955008-motor-psycho-sport.html

Parts Unlimited - Drag Specialties - LeMans Corp is our distributor for...

ARAI - ALPINESTARS - THOR - ICON - MOOSE RACING - Z1R - SENA - DUNLOP - METZELER - FMF - MOTUL - MAXIMA - RENTHAL - YOSHIMURA - TWIN AIR - ODI - 100% - SPECIALIZED - CRANKBROTHERS - MICHELIN - AGV - FACTORY EFFEX - AFX - AND MORE!

https://www.parts-unlimited.com/find-dealer (Type in 91320 for our zip code)

Parts Unlimited is the largest powersports distributor in the United States. They are now the exclusive distributor for Arai Helmets in the U.S.. Their house brands are Icon, Moose, Thor, AMS, Z1R, Arctiva and more.

WPS - Western Power Sports is our distributor for...

ALPINESTARS MX - GAERNE - FLY RACING - ODI - FMF - SCORPION - MIKA METALS - HIGHWAY 21

https://www.wps-inc.com/dealer-locator?distance=25&location=91320

Western Power Sports or WPS is the faster growing distributor currently. Their house brands are Fly Racing and Highway 21.

Turn14 Distribution is our distributor for...

ANSWER - MSR - PRO TAPER - FMF - GAERNE - ACERBIS - ATHENA - DRAGONFIRE - CYCRA - EVS - FIRSTGEAR - SPEED & STRENGTH - GIANT LOOP - RIVER ROAD - USWE - VANCE AND HINES - WISECO

https://www.turn14.com/about

Turn14's house brands are Answer, MSR, Pro Taper, Renthal, Vance & Hines, Firstgear, and Speed & Strength.

O'NEAL & OGIO POWERSPORTS is our distributor for...

O'Neal - OGIO

O'neal doesn't have a dealer locator but we buy direct from O'Neal and also use them for OGIO Powersports as they are the U.S. distributor for OGIO POWERSPORTS. OGIO is owned by Callaway Golf.

Bell Helmets Dealer Locator

https://troyleedesigns.com/pages/store-locator (Type in 91320 Zip Code)

Features

Innovative hybrid frames are constructed from a flexible composite over-injected with a high performance fiber reinforced polymer which provides optimal structural integrity and support while being ultra-lightweight and adaptive
The frame system 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
Slim ergonomic design for riding comfort during dynamic movement
Extremely stable slim-design four-point hinge system perfectly follows the articulation of the knee
Lightweight and highly ventilated knee protector offers strong impact force dispersion and absorption while ensuring maximum coverage area in all riding positions

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Let customers speak for us

from 710 reviews

Great Transaction

Communication with the seller was excellent. The helmet arrived quickly and as described. Very pleased with the overall transaction.

Gary A

12/17/2025

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Great communication! Like the small shops that knew our name and our 2 strokes!

I was flat amazed at the quick response and excellent communication from Motor Psycho. Gave me the confidence to order from them again and again. Get Fast House to print the shirts that sell too! 5 stars all the way

Daniel Smith

12/16/2025

Fasthouse Members Only Tee - Black

Product received in a timely manner

Product received in a timely manner.

Randall Duke

12/15/2025

Motor Psycho Sport

Great buy

The helmet was an open box, but it arrived looking new with all the parts. I'm very happy with the helmet, the price and overall experience with this store.

Adri

12/14/2025

Arai Quantum-X Helmet - Oriental Black Frost - Size Small - OPEN BOX

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Great price and super fast easy shipping. Helmet came perfect with all original accessories. Thanks so much !

Anonymous

12/13/2025

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Great service and prices

I bought an open box helmet. What arrived looked new and still had the tags on it. The person I spoke to was great and was able to give me a discount code in addition to the already low price. The helmet fits and looks great.

William Ferearo

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Helmet arrived quickly. Great purchase experience happy to find these folks will use again.

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Awesome! Will do business with Motor Psycho Sport again!

Joseph

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Love

Love it

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12/08/2025

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Great boot and great service. I was able to pick up the phone and speak with someone that helped me get the right boot. Thank you.

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One of the only places that carry half size’s. Fast shipping and the best price out there. 10/10

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Gaerne SG-22 Boots - White

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Lots of nice features. Comfortable. Noisy then I would prefer but maybe I need to adjust pads.

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Quality product, Quick shipment.. Motor Psycho Sport provided great service..

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Love the fit and finish. Helmet was brand new!

Scott

11/26/2025

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Awesome Boots, Awesome service!

These are probably the most comfortable brand new pair of boots I have ever put on! Motor Psycho Sports offered them at a fantastic price and delivered then lightning quick. I am a very satisfied customer!

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Alpinestars Bionic 5s Youth Knee

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