2005 JMRCA 1/8 Off-Road Japan Championship
Oct 21-23, 2005
Winner: Masao Tanaka (Mugen Seiki MRX-4)

2nd. Takaaki Shimo 1st. Masao
Tanaka 3rd. Yuuya Sahashi
| Pos. | Name |
Best Result |
Car |
|
Qualifying after 2 rounds |
|||
| 1 | Takaaki Shimo * Seeded |
18L 5:08.824 (Rd.2) |
Kyosho |
| 2 | Masao Tanaka * Seeded | 18L 5:10.615 (Rd.2) | Mugen |
| 3 | Kazuya Yuruki | 18L 5:11.646 (Rd.2) | Mugen |
| 4 | Yuuya Sahashi | 18L 5:13.888 (Rd.1) | Serpent |
| 5 | Keisuke Fukuda | 18L 5:14.169 (Rd.2) | Mugen |
| 6 | Nobuo Naito | 18L 5:14.367 (Rd.2) | Mugen |
| 7 | Tsuguo Kitade | 18L 5:15.014 (Rd.2) | Kyosho |
| 8 | Ken Furukawa | 18L 5:15.791 (Rd.2) | Kyosho |
| 9 | Hiroaki Toi | 18L 5:16.475 (Rd.2) | Mugen |
| 10 | Takatoshi Morita | 18L 5:17.293 (Rd.2) | Kyosho |
Final Result
| Pos. | Name |
Area |
Lap/time |
Car |
|
Final (45min.) |
||||
| 1 | Masao Tanaka |
Kanto |
152L / 45:08.594 | Mugen |
| 2 | Takaaki Shimo | Kanto | 152L / 45:12.174 | Kyosho |
| 3 | Yuuya Sahashi | Kansai | 150L / 45:11.340 | Serpent |
| 4 | Kazuya Yuruki | Kanto | 148L / 45:00.484 | Mugen |
| 5 | Keisuke Fukuda | Kanto | 146L / 45:17.845 | Mugen |
| 6 | Hideo Kitazawa | Kanto | 145L / 45:16.011 | Kyosho |
| 7 | Michio Haijima | Kanto | 143L / 45:14.464 | Mugen |
| 8 | Takatoshi Morita | Kanto | 132L / 45:05.540 | Kyosho |
| 9 | Kazuki Iida | Kanto | 129L / 45:15.445 | Mugen |
| 10 | Tsuguo Kitade | Kanto | 34L / 23:16.697 | Kyosho |

Finalist
| 2005 JMRCA 1/8 On-Road Japan Championship was held in October 21-23 at Keitune Racing |
| Speed Way. 67 drivers who qualify the district qualification joined this race. |
| The rain was coming during the 2nd day of qualification and canceled all the rest of rounds. |
| The weather for the final was perfect and Masao Tanaka wins championship followed by Shimo |
| and Sahashi. |