Have been gathering numbers and information for a while to put together this registry for the yamaha SR's 1971-1973. If anyone has any #'s to add whether it be chassis, engines, mag housings, or matching number sleds please chime in or PM me with your information and i'll add it. If anyone recognizes a number below that doesn't have a description next to it and has info on it please let me know. Some info came from the old registry and was lacking information for what was there with that #. Thanks to everyone who has come forth with their info so far. Have been able to match up a few engines, housings and chassis with the information.
71 SR 433
107 factory engine w/pipes, magnesium motor mount
135 matching
173
190
201
217
222 factory engine w/pipes, also crankcase 551-E1-10
230 chassis
72 SR 433
R433-00127 magnesium mag housing
YZ702-E-04, crankcase/magnesium mag housing engine
YZ702-E-21 crankcase/magnesium mag housing engine
YZ702-E-27 crankcase/magnesium mag housing engine
1107 matching
1112 chassis
1116 matching
1118
1121 matching
1123 matching
1126 chassis
1160
1201 mag housing
1205 factory 72 SR 433, engine/crankcase YZ702-E-21, chassis SSR433-B-10
1210 matching
1215 matching
1237 mag housing, magnesium
1241 matching
1258 mag housing
72 SR 643
040-E-10 crankcase
YZ703-E-09 mag housing/engine
YZ703-E-17 crankcase
103 factory chassis, also YZ703-B-02
111 matching
130 crankcase
142 matching
148
150 chassis
161 engine
188 matching
193 engine
197 matching
198 matching
214 crankcase
228 chassis
230 engine
236 factory canada 643,chassis YZ703-B-09, engine/mag housing YZ703-E-09
73 SR 292
103 matching
105
106 mag housing
113 matching
114 matching
115 chassis
116 chassis
117 chassis
127 matching
128 chassis
129
133 mag housing
133 chassis
135 chassis
139
144
147 chassis
153 chassis
157
163
166 chassis
170 matching
178 matching
189 matching
191 chassis
201 chassis
204 chassis
211 chassis
216 chassis
218 chassis
218 engine also 380-2E-10
221 chassis
222 chassis
224
231 engine
236 chassis
240 matching
245
246 chassis
266
288 matching
292
294
300
303
306
310 engine
312 chassis
73 SR 433
2106
2107 matching
2112
2113 mag housing
2122
2123 chassis
2124
2125 engine
2131
2137 matching
2139 mag housing
2148 chassis
2149 chassis
2149 engine
2150
2153 chassis
2154 chassis
2157 matching
2159 matching
2164 chassis
2165
2193 matching
2196 matching
2203 engine
2213 matching
2219 matching
2235 matching
2243
2244 chassis
2249
2252 matching
2253
2257 chassis
2260
2261 matching
2265 chassis
2266 chassis
73 SR 643
1104 engines x 2
1108 mag housing
1109 engine
1110
1119 chassis
1120 chassis
1122 mag housing
1123 mag housing
1128
1130 engine
1131 chassis
1132 mag housing
1137 matching
1138
1145 chassis
1147 chassis
1148
1151 chassis
1153 matching
1155
1157 chassis
1158 engine
1166
1168 matching
1169 matching
1174
1177 matching
1192 matching
1200 mag housing
1205 chassis
1206 chassis
1210
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