After three decades of creating mtb drivetrain shimano have firmly established themselves as one of the market leaders in the mountain bike industry producing top quality performance orientated and innovative components at affordable prices the latest line for shimano uses dyna sys technology to form a stable drivetrain which even the roughest rockiest muddiest trails can39t shake the deore xt and the slx are shimano39s two best sellers in the mtb group so they have taken these two