This  is a great item! Get your old bike riding like new again. This is a new in the package 7pc Clutch Friction Disc Set for the 1976 Yamaha YZ250 C , YZ400 C and IT400 C motorcycles  Please note these will not fit the earlier earlier or later models from what I know. as the used a different clutch friction disc so these are specifically for 1976 year of these bikes.  Start enjoying your bike...get the back tire spinning..not your clutch! If your clutch feels jerky or slipping this is the fix. This is an easy swap for the home mechanic to do..or get your local shop to help you.  If you are riding, restoring or racing you and your bike will be happy with a new clutch! Your bike probably still has the old original clutch plates in it! The top-quality new clutch friction discs set is an important part of getting your engine power to your back wheel smoothly..and allow you to enjoy the trails, woods or track. Your clutch disc set will be mailed to you new in the package. Top quality aftermarket item.  Correct replacement for Yamaha part # 363-16321-00, 363-16321-09 That's is it! We only sell the best. Thank you, and we look forward to doing business with you!