GEAR KIT. FOR LARGE MAINSHAFT(DAM3167/22G1040)ONLY "S"RATIO

4 synchro close ratio helical gear kit for pre A+ gearboxes using an 18mm A+ mainshaft. Contains 1st motion shaft for larger 18mm mainshaft(A Plus) but with original 22G1040 pre plus laygear which uses a single step layshaft. Can be used on earlier gaerboxes when using the later type larger 18mm end A+ mainshaft. Coverts the original gear ratio to "S" ratio. Gear part numbers are DAM3167 for 1st motion shaft and 22G1040 for laygear. The 1st motion shaft gear was standard fitment on 1275GT from 79-81.