Original Multi-Adjustable Slipper Clutch - MSC, with individually adjustable FRONT and/or BACK slippage via various slipper pads and clutch bowls of different diameter, guarantees better and many more constant clutch procedure generate quicker acceleration notably less wheel spin. For enhanced performance there are two main different pads with different hardness, yellowish SLS pads with greater slippage and black colored colored colored medium hardness with less slippage. The slippage ratio between front and back tires are modified individually according to the form of the track, tires and sporting design. The Multi-Adjustable Slipper Clutch is roofed in Carpet Edition. Fits XB4'20-21, XT4'20