1991 Supersport 400 TT
Course name: Mountain (post 1914)
Course length: 150.92 miles (4 laps)
Competitors
| Position | Competitor(s) | Time | Speed | Machine |
|---|---|---|---|---|
| 1 | Leach, Dave | 1:25:50.00 | 105.49 | Yamaha |
| 2 | Hislop, Steve | 1:26:06.40 | 105.16 | Honda |
| 3 | Moodie, Jim | 1:27:00.20 | 104.07 | Yamaha |
| 4 | Morrison, Brian | 1:27:01.20 | 104.05 | Yamaha |
| 5 | Linsdell, Steve | 1:27:33.20 | 103.42 | Yamaha |
| 6 | Ives, Steve | 1:27:48.40 | 103.12 | Yamaha |
| 7 | Selby, Howard | 1:28:42.60 | 102.07 | Yamaha |
| 8 | Jefferies, Nick | 1:29:13.20 | 101.49 | Honda |
| 9 | Lougher, Ian | 1:29:21.80 | 101.33 | Yamaha |
| 10 | Goodley, David | 1:30:12.40 | 100.38 | Kawasaki |
| 11 | Harris, Shaun | 1:30:43.20 | 99.81 | Suzuki |
| 12 | Lofthouse, Mick | 1:30:49.20 | 99.7 | Kawasaki |
| 13 | Madsen-Mygdal, Dave | 1:32:38.60 | 97.74 | Honda |
| 14 | Baldock, Geoffrey | 1:32:54.20 | 97.46 | Honda |
| 15 | Williams, Glenn | 1:33:34.00 | 96.77 | Kawasaki |
| 16 | Price, Robert A. | 1:33:59.00 | 96.34 | Kawasaki |
| 17 | English, Glen | 1:34:07.00 | 96.21 | Kawasaki |
| 18 | Morris, Dave | 1:34:10.00 | 96.16 | Suzuki |
| 19 | Goodings, Grant | 1:34:19.00 | 96 | Kawasaki |
| 20 | Campbell, Crighton | 1:34:48.40 | 95.51 | Honda |
| 21 | Armes, Phil | 1:35:01.00 | 95.3 | Suzuki |
| 22 | Weeden, John | 1:35:11.00 | 95.13 | Yamaha |
| 23 | Batson, Alan | 1:35:42.00 | 94.62 | Honda |
| 24 | Finch, Frank | 1:35:50.80 | 94.47 | Yamaha |
| 25 | Dugdale, Alan | 1:37:02.80 | 93.3 | Yamaha |
| 26 | Simmons, Bob | 1:37:06.00 | 93.25 | Honda |
| 27 | Stengl, Manfred | 1:37:12.80 | 93.14 | Honda |
| 28 | Knight, Ray | 1:37:14.80 | 93.11 | Kawasaki |
| 29 | Crellin, John | 1:37:39.80 | 92.71 | Yamaha |
| 30 | Grant, Robert | 1:37:43.00 | 92.66 | Suzuki |
| 31 | Godart, Etienne | 1:38:12.60 | 92.2 | Kawasaki |
| 32 | Skinner, Liz | 1:40:15.40 | 90.32 | Kawasaki |
| 33 | Sawyer, Geoff | 1:40:34.80 | 90.02 | Suzuki |
| 34 | Lemberg, Karl Heinz | 1:40:43.00 | 89.9 | Yamaha |
| 35 | Raybould, John | 1:40:44.00 | 89.89 | Kawasaki |
| 36 | Brennan, Gerry | 1:41:08.00 | 89.53 | Honda |
| 37 | Donnan, John | 1:42:47.80 | 88.08 | Suzuki |
| R | Birkinshaw, Martin | Kawasaki | ||
| R | Allan, Robbie | Suzuki | ||
| R | Gavin, Richard | Suzuki | ||
| R | Lee, Gavin | Suzuki | ||
| R | Newton, Ian | Suzuki | ||
| R | Rutter, Tony | Suzuki | ||
| R | Cull, Steve | Yamaha | ||
| R | Gabbott, Steve | Yamaha | ||
| R | Reid, Brian | Yamaha |