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Converting the front or rear of the Xray XB4 to 12mm hex drive is simple with the release of the new adaptor sets from JConcepts.    The hex adaptors are precision machined, blue anodized aluminum and feature a clamping style design that combine durability and functionality.   Installation is simple and converts the front to the more popular 12mm design.

After the Front adaptors are installed you can use your choice of the following new wheels by JConcepts: #3368W, 3368Y or any (Kyosho ZX5, ZX6 specification) 12mm front wheel. After the Rear adaptors are installed you can use your choice of the following wheels by JConcepts: #3338, 3348, 3338y, 3348y or the new  #3366W, 3366Y along with any (B44 |TLR | B5 specification) 12mm rear wheel.

See www.jconcepts.net