# Wereldkampioenschap superbike van Sugo 1991

Het wereldkampioenschap superbike van Sugo 1991 was de achtste ronde van het wereldkampioenschap superbike 1991. De races werden verreden op 25 augustus 1991 op het Sportsland SUGO nabij Murata, Japan.

## Race 1

| Pos | Nr | Rijder | Constructeur | Rondes | Tijd | Grid | Punten |
| 1 | 23 | Doug Polen | Ducati | 25 | 39:40.716 | 1 | 20 |
| 2 | 4 | Rob Phillis | Kawasaki | 25 | +5.437 | 2 | 17 |
| 3 | 28 | Aaron Slight | Kawasaki | 25 | +6.867 | 8 | 15 |
| 4 | 15 | Peter Goddard | Yamaha | 25 | +7.025 | 6 | 13 |
| 5 | 45 | Kevin Magee | Yamaha | 25 | +7.570 | 9 | 11 |
| 6 | 1 | Raymond Roche | Ducati | 25 | +13.878 | 10 | 10 |
| 7 | 2 | Fabrizio Pirovano | Yamaha | 25 | +13.947 | 18 | 9 |
| 8 | 29 | Scott Russell | Kawasaki | 25 | +17.527 | 11 | 8 |
| 9 | 25 | Davide Tardozzi | Ducati | 25 | +25.271 | 12 | 7 |
| 10 | 9 | Giancarlo Falappa | Ducati | 25 | +25.449 | 14 | 6 |
| 11 | 5 | Carl Fogarty | Honda | 25 | +28.275 | 15 | 5 |
| 12 | 27 | Fred Merkel | Honda | 25 | +34.324 | 5 | 4 |
| 13 | 41 | Ryuji Tsuruta | Kawasaki | 25 | +41.828 | 13 | 3 |
| 14 | 44 | Kiyokazu Tada | Kawasaki | 25 | +42.558 | 20 | 2 |
| 15 | 36 | Masanao Aoki | Suzuki | 25 | +42.584 | 16 | 1 |
| 16 | 38 | Tetsuya Shirai | Honda | 25 | +1:14.289 | 23 | |
| 17 | 30 | Juan López Mella | Honda | 25 | +1:16.807 | 29 | |
| 18 | 17 | Udo Mark | Yamaha | 25 | +1:20.991 | 28 | |
| 19 | 14 | Malcolm Campbell | Honda | 25 | +1:21.177 | 26 | |
| 20 | 54 | Tadaaki Hanamura | Yamaha | 25 | +1:24.435 | 27 | |
| 21 | 99 | Jean-Yves Mounier | Yamaha | 24 | +1 ronde | 31 | |
| 22 | 39 | Tom Kipp | Yamaha | 24 | +1 ronde | 30 | |
| 23 | 46 | Hiromasa Sakamoto | Yamaha | 24 | +1 ronde | 34 | |
| 24 | 49 | Hiroshi Kobayashi | Yamaha | 22 | +3 ronden | 32 | |
| DNF | 88 | Tohru Suzuki | Kawasaki | 20 | Uitgevallen | 36 | |
| DNF | 10 | Jari Suhonen | Yamaha | 18 | Uitgevallen | 24 | |
| DNF | 33 | Niall Mackenzie | Yamaha | 16 | Uitgevallen | 7 | |
| DNF | 24 | Jeffry de Vries | Yamaha | 10 | Uitgevallen | 33 | |
| DNF | 43 | Shinichiro Ohura | Yamaha | 7 | Uitgevallen | 22 | |
| DNF | 53 | Shingo Kato | Yamaha | 7 | Uitgevallen | 21 | |
| DNF | 50 | Roy Leslie | Ducati | 6 | Uitgevallen | 35 | |
| DNF | 34 | Kenji Osaka | Yamaha | 5 | Uitgevallen | 17 | |
| DNF | 42 | Keiichi Kitagawa | Kawasaki | 3 | Uitgevallen | 4 | |
| DNF | 7 | Terry Rymer | Yamaha | 1 | Uitgevallen | 19 | |
| DNF | 3 | Stéphane Mertens | Ducati | 0 | Uitgevallen | 3 | |
| DNS | 48 | Daniel Amatriaín | Ducati | 0 | Niet gestart | 25 | |

## Race 2

| Pos | Nr | Rijder | Constructeur | Rondes | Tijd | Grid | Punten |
| 1 | 23 | Doug Polen | Ducati | 25 | 39:39.825 | 1 | 20 |
| 2 | 1 | Raymond Roche | Ducati | 25 | +6.024 | 10 | 17 |
| 3 | 45 | Kevin Magee | Yamaha | 25 | +6.563 | 9 | 15 |
| 4 | 28 | Aaron Slight | Kawasaki | 25 | +6.568 | 8 | 13 |
| 5 | 29 | Scott Russell | Kawasaki | 25 | +14.254 | 11 | 11 |
| 6 | 33 | Niall Mackenzie | Yamaha | 25 | +14.300 | 7 | 10 |
| 7 | 2 | Fabrizio Pirovano | Yamaha | 25 | +14.625 | 18 | 9 |
| 8 | 5 | Carl Fogarty | Honda | 25 | +15.097 | 15 | 8 |
| 9 | 27 | Fred Merkel | Honda | 25 | +18.892 | 5 | 7 |
| 10 | 25 | Davide Tardozzi | Ducati | 25 | +22.069 | 12 | 6 |
| 11 | 9 | Giancarlo Falappa | Ducati | 25 | +22.932 | 14 | 5 |
| 12 | 41 | Ryuji Tsuruta | Kawasaki | 25 | +28.636 | 13 | 4 |
| 13 | 44 | Kiyokazu Tada | Kawasaki | 25 | +34.979 | 20 | 3 |
| 14 | 7 | Terry Rymer | Yamaha | 25 | +47.935 | 19 | 2 |
| 15 | 36 | Masanao Aoki | Suzuki | 25 | +48.082 | 16 | 1 |
| 16 | 38 | Tetsuya Shirai | Honda | 25 | +1:00.847 | 23 | |
| 17 | 10 | Jari Suhonen | Yamaha | 25 | +1:04.825 | 24 | |
| 18 | 30 | Juan López Mella | Honda | 25 | +1:06.047 | 29 | |
| 19 | 54 | Tadaaki Hanamura | Yamaha | 25 | +1:15.188 | 27 | |
| 20 | 99 | Jean-Yves Mounier | Yamaha | 25 | +1:15.635 | 31 | |
| 21 | 14 | Malcolm Campbell | Honda | 25 | +1:15.683 | 26 | |
| 22 | 39 | Tom Kipp | Yamaha | 25 | +1:18.445 | 30 | |
| 23 | 49 | Hiroshi Kobayashi | Yamaha | 25 | +1:29.575 | 32 | |
| 24 | 24 | Jeffry de Vries | Yamaha | 24 | +1 ronde | 33 | |
| 25 | 88 | Tohru Suzuki | Kawasaki | 24 | +1 ronde | 36 | |
| DNF | 46 | Hiromasa Sakamoto | Yamaha | 23 | Uitgevallen | 34 | |
| DNF | 15 | Peter Goddard | Yamaha | 11 | Uitgevallen | 6 | |
| DNF | 17 | Udo Mark | Yamaha | 11 | Uitgevallen | 28 | |
| DNF | 3 | Stéphane Mertens | Ducati | 10 | Uitgevallen | 3 | |
| DNF | 42 | Keiichi Kitagawa | Kawasaki | 9 | Uitgevallen | 4 | |
| DNF | 4 | Rob Phillis | Kawasaki | 5 | Uitgevallen | 2 | |
| DNS | 34 | Kenji Osaka | Yamaha | 0 | Niet gestart | 17 | |
| DNS | 53 | Shingo Kato | Yamaha | 0 | Niet gestart | 21 | |
| DNS | 43 | Shinichiro Ohura | Yamaha | 0 | Niet gestart | 22 | |
| DNS | 48 | Daniel Amatriaín | Ducati | 0 | Niet gestart | 25 | |
| DNS | 50 | Roy Leslie | Ducati | 0 | Niet gestart | 35 | |

## Tussenstanden na wedstrijd

| Pos | Nr | Rijder | Team | Punten |
| 1 | 53 | Doug Polen | Ducati | 257 |
| 2 | 4 | Rob Phillis | Kawasaki | 178 |
| 3 | 1 | Raymond Roche | Ducati | 134 |
| 4 | 2 | Fabrizio Pirovano | Yamaha | 134 |
| 5 | 3 | Stéphane Mertens | Ducati | 114 |
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