P/N	Description
T2230b	1st. Spur Gear 52T
T2231b	1st. Spur Gear 53T *MTX6/6R/7 Kit STD.
T2232b	1st. Spur Gear 54T
T2238b	2nd. Spur Gear 47T
T2239b	2nd. Spur Gear 48T *MTX6/6R/7 Kit STD.
T2240b	2nd. Spur Gear 49T