MXA Test: Twisted Development Racing 2nd injector kit

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06-15 Kawasaki kx450 cam chain tensioner

Manual Cam Chain Tensioner Click here to buy Most bikes come with automatic cam chain tensioners which are spring loaded ratcheting devices.  The problem with the spring loaded design is it can put more pressure than needed to keep proper chain tension by ratcheting in every chance it gets equaling in a overly tight chain... Read More »

New! 2nd Injector kit

Click Here to order yz250f 2nd Injector Kit : Includes a 2015 Yz450 air boot with adapter made to fit the yz250f (throttle body needs minor modifications) injector,fuel line are all mounted and ready to install in the 450 air boot. The Yz250f has a great power plant stock and has given us a great... Read More »

New Product!

Yamaha YZ250F spark plug constant contact holder One of the common problems with four stroke motorcycles is heat. Here at Twisted Development Racing we came up with a fix for this known issue. We have developed a device that will constantly keep pressure on the spark plug cap preventing it from raising and popping off... Read More »

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