Xpress has shared images of their new Mid Pulley conversion kit for the Execute XQ1 1/10th Scale Touring Car. This kit modifies the transmission with an equal distance for rear and front belts, distributing the motor power better. With the weight shifted forwards, you get a more consistent performing car. This conversion kit will also fit the XQ1S, and will be a solid upgrade to the car. Below more images of the kit.
Source: rc-xpress.com