Unique Multi-Adjustable Slipper Clutch - MSC, with independently adjustable FRONT and/or REAR slippage via various slipper pads and clutch soup bowls of various diameter, guarantees better and much more consistent clutch procedure to produce faster acceleration and less wheel spin. For enhanced performance there are two various pads with various hardness, yellowish SLS pads with greater slippage and black colored medium hardness with less slippage. The slippage ratio between front and back tires are adjusted independently with respect to the form of the track, tires and sporting design. The Multi-Adjustable Slipper Clutch is included in Carpet Edition. Fits XB4'20-21, XT4'20