The Troy Lee Designs 6400 Knee Brace is a lightweight and comfortable brace for any rider needing stability and protection for their knees.

The 6400 Knee Brace has bilateral support hinges that use hyper-extension stops to support and help prevent knee injury. The X-Fit Strap System prevents bunching that could limit movement and create discomfort while out on the trails. Adjustment upper and lower compression straps allow a customised fit. Thermoplastic knee pads are covered in an abrasion resistant material for durability and longevity. This brace is ideal for anyone riding mountain bike but is also usable for snowboarding, skiing, and motocross.

Key Features


  • X-Fit Strap System
  • Bilateral Support hinges and impact absorbing base pads
  • Thermoplastic knee protection
  • Compression fit straps for tailored fit
  • Abrasion resistant kneecap
  • Moisture-wicking frame liners
  • Sold in pairs - left and right
  • 1-year limited warranty

Troy Lee Designs 6400 Knee Brace

The Troy Lee Designs 6400 Knee Brace is a lightweight and comfortable brace for any rider needing stability and protection for their knees.

The 6400 Knee Brace has bilateral support... Read more

£270.00 £216.00

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Delivery Information

We have a range of delivery options on orders. Most importantly, if your order is over £50 then delivery is free!

All Biketart orders are fully trackable. You will get a tracking number by email when your order is shipped which will allow you to track it with Royal Mail or DPD.

In-stock orders placed by 4pm will be processed the same day.

Any items displaying "in-stock with supplier, despatched in 2-3 days" on the product page cannot be despatched the same day as they will be shipped to us from the supplier when you place your order.

Read on to discover the delivery options available to you on your order.

Delivery Services

Standard Tracked: All orders over £50 are eligible for free standard tracked delivery by Royal Mail. For orders under £50 there is a £2.99 charge. Orders sent using standard tracked are usually delivered in 2-3 days.

Priority Tracked: For £3.99 your order is sent by premium tracked delivery which gives a 1-2 day (including Saturdays) delivery timescale. This service is provided by Royal Mail who will usually deliver on Saturdays. Orders must be placed by 4pm.

Next Day Courier: If you require next-working-day delivery then this is provided by DPD and is £6.99. Orders must be placed by 3.30pm and be fully in-stock in order to be processed before our daily DPD collection.

Saturday Delivery: You can select Saturday delivery options from DPD at the checkout.

Bike Delivery: Bikes are always delivered by courier. After placing a bike order your bike is fully assembled and tested before being carefully boxed for shipping. Because of this build process it is not always possible to offer next-day delivery on a bike. Please do get in touch if you want to know a specific despatch day on any bike on our website. Call us on 01227 832582 or email

Returns Info

We offer a 30 day return period on our items. We ask that items are returned in their original packaging and in re-sellable condition. We do not pay returns postage.unless we have made an error with your order.

We cannot accept the return if the item is not correctly packaged and is damaged in transit during the return trip back to us.

    Please do not stick any tape or labels to the products branded outer packaging.

      If you require an exchange it is recommended that you re-order the correct size/item and return the item you do not wish to keep to us for a refund.