NEW NordicTrack Skier/ Ski Machines BACK WHEEL FRAME REPLACEMENT FOAM TUBE STOP / END RAIL PADS & CAPS; Pro - Elite - 900-T SkiersWe also have HANDLEBAR REPLACEMENT FOAM HAND GRIPS & CAPS which are longer and listed separately. These can also replace traditional handlebar plastic grips. These are BETTER than Original Foam Rail Pads and are more full (thick) dense foam both durable with a great grip & feel. Black not washed or dried out grey. These slide on TIGHT and will not turn or easily come off. Radius cut outer finishing end with an exact fit. 900 skiers do not have a rear