I have a 2007 YZ450F with 26 hours on it. I was just thinking if anyone has done their shock service on their own. I have nitrogen, so I can recharge the shock if needed. Manual won`t tell me anything about spliting up the shock. Maybe there are some tutorials in the internet that I don` t know of or maybe someone could tell me a bit about doing it (other than "send it to shop"). What about fork and shock oils? I was recommended to use this oil, http://www.ams4ktm.co.uk/shop.php?product_id=3071 , all thought I have used before Valvoline 5W. Does shock need different "W" then forks? Manual recommends to use S1 in forks, but I have heard it brakes down fast and is expensive. And after all when should I service my forks and shock. Some people suggest to do shock once in a year and forks twice. So far I have done forks once a year and haven`t touched shocks on my bikes. Hoping to get intelligent replays, thank you!