KG Clutch Factory works hard to provide the following in every clutch disk, separator and spring set:
• Clutch lever feel
• Proper Engagement
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Some of the Friction Disk material is so tough and wear resistant that it can actually wear the aluminum of the clutch center and clutch outer.

• Stability in clutch operation after repeated aggressive engagements
• Consistent Hook up
• No Flaring
• Crisp feel
• No slippage
• Minimum Morning Sickness (a clutch that sticks together in the morning)
• Proper Engagement in a wide ambient and operational temperature range
There are many types of friction disk material. Many bikes are equipped with cork or a paper material from the factory. These materials has advantages and disadvantages

There are various materials that are used to make up friction material. A common name that is used is Kevlar, but Kevlar is only one element out of many making up the friction material used for a disk. Not all Kevlar disk are the same, just because a pack of clutches is marked Kevlar does not meant that it is the right clutch disk for your application. KG Clutch Factory has many different formulas of Kevlar disks depending on the motorcycle model and the application.

We have learned from hours and hours of testing what is needed for each application. We have also found where, within a clutch pack, it is appropriate to use Kevlar. Kevlar disks should not be used when they will come in contact with an aluminum center or outer. When Kevlar is used, while in contact with aluminum centers and outers, the material can cause premature wear of the aluminum in even the mildest street riding. When appropriate KG Clutch Factory disk sets are packaged with a material appropriate to be used with aluminum on the top and the bottom.

If the directions tell you to throw away any parts besides the ones you are replacing you have bought a poorly designed kit. Many companies will instruct you to throw away a spring the fits inside the inside most disk, on some models. KG Clutch Factory disks are designed to use that spring to maintain the operation that the factory designed.