Synchroniser ring 1st - 2nd gear 993, 996, 996 Turbo, 997 Turbo (07-11), GT3 (99-11)
Transmission
Synchro shift ring 1st-2nd gear Boxster (97-04), 993 (94-98), 996 & Turbo (98-05), 997 Turbo (07-11), GT3 (99-11)
Ring gear 964 ( 89-94 ) 993 ( 94-98 ) 997T2 ( 10-12 ) GT3-1 ( 99-05 ) GT3-2 ( 07-11 )
Pressure plate 996T (01-05) 997T (07-09) 997T2 (10-12) GT3-1 (99-05) GT3-2 (07-11)