Description | Master cylinder | Bore size | Front caliper /cylinder | Bore/disc | Rear wheel cylinder | Bore size | Cast No. | Regulator valve |
Dry suspension Mini 1959 to chassis number A2S7 359770 to 1962 |
GMC153 |
.750" |
GWC101 |
.9375" |
GWC1102 |
.750" |
12 |
21A1774 |
Dry suspension Mini from chassis number A2S7 359771 1962-67 |
GMC102 use GMC171 |
.70" |
GWC101 |
.9375" |
GWC1101 |
.625" |
10 |
21A1174 |
All hydrolastic Mini MK1 Minis from September 1964 on |
GMC102 use GMC171 |
.70" |
GWC102/3 |
.8125" |
GWC1101 |
.625" |
10 |
21A1774 |
MK2 Mini and derivatives 1967-75 |
GMC102 use GMC171 |
.70" |
GWC126/7 |
.9375" |
GWC1102 |
.75" |
12 |
21A1774 |
MK3 Mini October 1968 on and derivatives, single line to 1977 |
GMC171 |
.70" |
GWC 126/7 |
.9375" |
GWC1102 |
.75" |
12 |
21A2031 |
997 Cooper to chassis number
C-A2S7 213829 to Feb 1962 with 21⁄8" pads
K-A2S4 213550 with 21A655 brake booster |
GMC103
Use GMC153 |
.75" |
27H4652
27H4653 |
7" disc
GBP101 pad |
GWC1102 |
.75" |
12 |
21A1774 |
997 Cooper
C-A2S7 213829-382831 Feb 1962 to March 1963 with 21⁄8" pads
M-AS4 213551-382183 |
GMC104
Use GMC171 |
.70" |
27H4652
27H4653 |
7" disc
GBP101 pad |
GWC 1102 |
.75" |
12 |
21A1774 |
997 Cooper dry C-A2S7 382832 March 1963 on with 2 3⁄8"
998 Cooper hydrolastic
pads
K-A2S4 382184 on |
GMC171
was GMC105 |
.70"
.625" |
27H4654
27H4655 |
7" disc
GBP102 pad |
GWC1101 |
.625" |
10 |
21A1774 |
Cooper'S' MK1/2 with servo 21A1293 |
GMC172 |
.70" |
27H4656/7 |
7.5" disc |
GWC1101 |
.625" |
10 |
21A1774 |
Cooper'S' MK3 1275GT with servo 13H7939 10" wheel |
GMC172 |
.70" |
27H4656/7 |
7.5" disc |
GWC1101 |
.625" |
10 |
21A1774 |
1275GT Single line brakes chassis number 19416-21569A 1974-76 |
GMC172 |
.70" |
GBC138/141 |
8.4" disc |
GWC1129 |
.6875" |
11 |
21A1774 |
1275GT Diagonal split chassis number 19416-21569 on 1974-76 |
GMC160 |
.70" |
GBC138/141 |
8.4" disc |
GWC1129 |
.6875" |
11 |
None |
1275GT Single line brakes chassis number 21570A on 1976-77 |
GMC172 |
.70" |
GBC138/141 |
8.4" disc |
GWC1126 |
.500" |
8 |
21A1774 |
1275GT Diagonal split chassis number 30001 on 1977-78 (Metric pipe unions) |
GMC167 |
.70" (17.5mm) |
GBC138/141 |
8.4" disc |
GWC1126 |
.500" |
8 |
None |
1275GT Front to rear tandem 1978 on (Metric pipe unions) |
GMC227 |
.70" |
GBC138/141 |
8.4" disc |
GWC1102 |
.750" |
12 |
FAM7821 |
850/998 Diagonal split Imperial union Master (Europe)
(not UK) 1976-77
Japan/Norway |
GMC160
GMC160 |
.70"
.70" |
GWC126/7
GWC126/7 |
.9375"
.9375" |
GWC1126
GWC1134 |
.500"
.5625" |
8
6 |
4 way switch 13H5905 |
850/998/1100 Front to rear (Belgium Netherlands and Luxemburg countries)
1974-75 (Belgium built) |
GMC159 |
.70" |
GWC 126/7 |
.9375" |
GWC1102 |
.750" |
12 |
4 way switch 13H5905 |
850/998 Diagonal split except van/pick up 1977-78 (1976-79 Europe) Metric |
GMC167 |
.70" (17.5mm) |
GWC 126/7 |
.9375" |
GWC1131 |
.5625" |
9 |
None |
850/998 Front to rear October 1978 on (1980-84 Europe) was GMC173 Imperial |
GMC227 |
.70-.75" (17.8-19mm) |
GWC126/7 |
.9375" |
GWC1102 |
.750" |
12 |
FAM7821 |
Mini van/pick up diagonal split 1977 on (Metric pipe unions) |
GMC167 |
.70" (17.5mm) |
GWC 126/7 |
.9375" |
GWC 1102 |
.750" |
12 |
None |
998 Mini front to rear 1984 on (Metric pipe unions) - stepped bore |
GMC227 |
.70-.75" (17.8-19mm) |
GBC138/141 |
8.4" disc |
GWC1102 |
.750" |
12 |
FAM7821 |
Innocenti (1275GT not UK) Front to rear 10" wheel with AXE244 servo |
GMC159 |
.70" |
27H4656/7 |
7 1/2" disc |
GWC1129 |
.6875" |
11 |
4 way switch 13H5905 |
998/1300 Latest 1990 Mini with built in servo GSM119. was GMC242 |
GMC90376 |
.8125" (20.6mm) |
GBC138/141 |
8.4" disc |
GWC1102 |
.750" |
12 |
FAM7821 |
ERA Turbo with built in servo GSM119. was GMC242 |
GMC90376 |
.8125" (20.6mm) |
GBC131/2 |
8.4" vented |
GWC1131 |
.5625 |
9 |
None |