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