# | Rider | Age | Bike | Team |
---|---|---|---|---|
1 | ![]() | 34 | ![]() | Corse Ducati Lucchinelli |
2 | ![]() | 31 | ![]() | BYRD-Yamaha-CP Racing |
3 | ![]() | 32 | ![]() | Total Wanty Stéphane Mertens Racing |
4 | ![]() | 35 | ![]() | Team Kawasaki |
5 | ![]() | 26 | ![]() | Silkolene Honda Britain |
7 | ![]() | 24 | ![]() | Team Loctite Yamaha |
8 | ![]() | 30 | ![]() | Team Rumi |
9 | ![]() | 28 | ![]() | Corse Ducati Lucchinelli |
10 | ![]() | 24 | ![]() | Arwidson Yamaha Team |
14 | ![]() | 38 | Honda RC30 | Team Yoshiharu |
15 | ![]() | 27 | ![]() | Team Hayashi |
17 | ![]() | 27 | ![]() | Mitsui Yamaha Racing Team |
19 | ![]() | 31 | ![]() | Team Loctite Yamaha |
20 | ![]() | 35 | ![]() | Swiss MSW Team |
23 | ![]() | 30 | ![]() | Fast by Ferracci |
24 | ![]() | 26 | ![]() | Yamaha Racing Team Henk de Vries |
25 | ![]() | 32 | ![]() | Grottini Divisione Corse |
27 | ![]() | 28 | ![]() | Team Rumi |
28 | ![]() | 25 | ![]() | Team Moving Kawasaki |
29 | ![]() | 26 | ![]() | Team Moving Kawasaki |
30 | ![]() | 26 | ![]() | Nivea Honda Team |
32 | ![]() | 34 | ![]() | Team Wanty |
33 | ![]() | 30 | ![]() | Team Hayashi |
34 | ![]() | 20 | ![]() | BYRD-Yamaha-CP Racing |
34 | ![]() | 24 | ![]() | Team Hayashi |
36 | ![]() | 25 | ![]() | Yoshimura Japan |
37 | ![]() | 27 | ![]() | Blue Helmets MSC |
38 | ![]() | 27 | Honda RC30 | Kouyou-kai Dream Racing Team |
39 | ![]() | 22 | Yamaha OW01 | Over Racing |
41 | ![]() | 25 | ![]() | Team Green |
42 | ![]() | 24 | ![]() | Team Green |
43 | ![]() | 24 | ![]() | NCS Over Racing |
44 | ![]() | 37 | ![]() | Tsukigi Racing |
45 | ![]() | 29 | ![]() | Y.R.T.R. |
46 | ![]() | ? | Yamaha OW01 | RSM RT Hachinohe |
48 | ![]() | 23 | ![]() | Team Dholda Honda |
49 | ![]() | ? | ![]() | Team RS-Katakura |
50 | ![]() | 35 | ![]() | Mister Donut Racing Team |
51 | ![]() | 31 | ![]() | Motor Team Development |
53 | ![]() | 24 | Yamaha OW01 | Over Racing |
54 | ![]() | 31 | ![]() | Team RS-Katakura |
64 | ![]() | 35 | ![]() | |
88 | ![]() | 24 | ![]() | Mister Donut Racing Team |
94 | ![]() | 29 | ![]() | |
99 | ![]() | 30 | ![]() | Sonauto Yamaha |
1991-08-23 to 1991-08-25
World Superbike Japanese Round
Sugo (Permanent circuit, 3.7375 km)
Attendance: 40,000
Event permit: IMN 02/9
Timekeepers: SEIKO Timing
Entries: ? / Practised: 37 / Qualified: 36

Sessions
Entry list
Struck out text denotes riders on entry list who did not participate.
Sources:
Official results/ 1991-xx-xx Screensport TV coverage/ BIKE 1991-07 pg51-53/ Cycle News pg20-21 1991-09-11/ El Mundo Deportivo 1991-08-25 pg45/ El Mundo Deportivo 1991-08-26 pg49/ Le Soir 1991-08-24 pg27/ Le Soir 1991-08-26 pg23/ Moto Revue n3004 pg15/ Riding Sport 1991 Suzuka 8 Hours Special pg93/ Riding Sport 1991-05 pg109/ Riding Sport n.104 pg68/ Riding Sport n.104 pg110-113/ Riding Sport n.105 pg26/ Riding Sport n.106 pg22-23/ Riding Sport n.106 pg154-159/ Sugo 40th anniversary website/ Yamaha Motor News 1991-06