Clutch Friction Discs aka Clutch Rebuild Kit for Honda CT90 / Trail 90
Clutch friction discs are a wear item on your Honda CT90 / Trail 90. The auto clutch feature of the Trail 90 is very unique but it also takes a toll on the friction discs. If your Trail 90 does not want to budge at the twist of the throttle or is slipping at high speed or with heavy load, it is likely that the friction material on the clutch discs have worn down up and it is time for replacement. Our Trail 90 clutch rebuild kit consists of 3 identical replacement friction discs for the CT90 auto clutch. The clutch springs on these motorcycles are not available at the moment. Originals will need to be reused and are often well within service limits. The holding power of the CT90 auto clutch design comes from centrifugal force applied to the clutch pack via the weights found in the clutch basket; faster the engine spins the more force is applied.
You will need to soak the clutch discs in some 10w-40 motor oil overnight prior to installation. Use regular motor oil and do not use synthetic or semi-synthetic blends or friction discs will slip and be ruined. Check the metal plates for excessive wear or gouging. Pay special attention to the order and orientation as the clutch steel plates, there are 4, and each is unique with some small sub springs. If assembled in the wrong order the clutch will not work correctly. The friction discs are all the same. Also clean out your lower crank case, oil pick up screen and center of the clutch basket which acts as a centrifugal oil filter. You will need the Oil Filter Nut Tool to remove the clutch basket. Torque the nut to 60 ft/bs during installation. and bend the lock tabs in place.
