bokrock said:OK guys I have a 2006 Apex ER with 144 studs and 23 tooth top gear. What kind of RPM's should it turn for best all around performance. Also when does the rev limiter kick in and is it a soft or hard limiter. I was turning about 11,100 last night on fairly loose groomed snow. I've heard anywhere between 10,500 and 11,200 is wright. I also have about 900 miles on it and weigh about 180lbs. Thanks for any help 