| 2020.01.23 | Information | O.S.ENGINE EXPLODED VIWS with CODE NUMBERS LIST DOWNLOAD | ||
| 2020.01.23 | Information | O.S.ENGINE TIMELINE DOWNLOAD | ||
| 2019.12.01 | Information | NEW MODEL GF30II | ||
| 2019.11.27 | Information | O.S. SPEED R2104 WORLD CHAMPION | ||
| 2019.11.18 | Information | O.S.SPEED B21 ADAM DRAKE EDITION 2(JPN SITE) | ||
| 2019.11.04 | Information | O.S.SPEED R2104 won the 1st prize of 2019 IFMAR 1/8 IC Track World Championship(JPN SITE) | ||
| 2016.10.23 | Information | TWO PREMIUM MODELS TO COMMEMORATE THE 80TH ANNIVERSARY | ||
| 2016.06.07 | Information | To all the users of OMA-4043-172 and OMA-4043-172 II | ||
| 2016.01.14 | Information | O.S. SPEED R21 Shimo Edition | ||
| 2015.08.03 | Information | O.S.PROFESSIONAL WEB SITE OPEN | ||
| 2015.01.13 | Information | Due to our control of main web server, some pages of our main web link can not work right now | ||
| 2014.12.22 | Information | O.S.SPEED B2101 "Ty Tessmann's Edition" | ||
| 2014.12.22 | Information | 2014 IFMAR 1/8 OFF-ROAD WORLD CHAMPION ENGINE O.S.SPEED B2101 | ||
| 2014.12.22 | Information | Expressly for 1/10 Touring-car racing competition engine O.S.SPEED T1201 | ||
| 2014.11.07 | IMPORTANT NOTICE | THE ERROR IN INSTRUCTION MANUAL OF CODE #12750 O.S. SPEED 21XZ-B Spec II | ||
| 2014.06.02 | information | Shinnosuke Yokoyama takes Japanese 1/8th nationals(Red RC Network) | ||
| 2014.04.02 | information | Spyder850 O.S.Limited Edition now on sale! | ||
| 2013.10.31 | information | Wankel Rotary Engine see-through type | ||
| 2013.10.28 | information | 1/8 Off-road buggy Engine MAX-21XZ-B Ver.II | ||
| 2013.10.20 | information | 1/8 Track Racing Engine O.S.SPEED R2101 | ||
| 2013.09.24 | information | 15cc Gasoline Engine GT15 | ||
| 2013.03.24 | information | How to adjust the GT15HZ carburettor | ||
| 2013.03.24 | information | GF40 | ||
| 2013.03.24 | information | O.S. brushless motor for Helicopter OMH Series |