Description
Ball Diff rings for the Ultima RB6, RB5 , SP and the RT5, RT6 and Lazers. Keep an eye on these for a grove that wears into the surface. Once there is a groove and the diff feels a bit "gritty" when spinning it you can then turn these over and use the other side. They are made of very high grade steel and last a long time. Other improvements to the durability can come from upgrading to ceramic balls (KYOWBD10) for the diff as well. If you are having trouble with to much wear make sure you are running the differential tight enough as well as the slipper loose enough.