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05-07-2024, 09:52 AM | #1 |
Join Date: Apr 2024
Location: Eastern NC
Posts: 3
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There is a great one!
I purchased the TrailMaster tm38ex, assembled it with no problems and it is an excellent, lightweight dual sport bike. I am currently looking for a smaller rear sprocket (Help anyone?) for it. The 51 tooth stock limits top speed to 65mph at redline. I want something like 47 tooth and it should be excellent on road. I did change tires from the MX only to a pair of Tusk dual sport tires and love them. I have the part number but can find no one who can order it.
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05-07-2024, 11:57 AM | #2 | |
Join Date: Aug 2013
Posts: 88
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Quote:
4 tooth isn't going to make a noticeable difference quite often I myself would swap a 51t with something like a 35 if it would fit. Check the bolt diameter, and swingarm clearance. Then go as small as you can go. For a 250 to do 60mph it needs to rev below 6k rpm in 4th or 5th (second last gear). That way you'll have top speed in this gear, and 15mph lower than peak speed in final gear (good for suburbs, and good in fuel economy). |
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05-09-2024, 12:15 PM | #3 |
Join Date: Jan 2018
Location: NC
Posts: 211
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Orion RXB 190L
The Orion RXB 190L is about as close as you can get to what you’re looking for, but again, it’s the 5 speed ZS190 engine, not a 6 speed. It’s street legal and powerful (@ 16HP stock; some say 18) and only 178lbs, but again, it’s street legal pit bike with a dirt bike seat and essentially what is a racing engine. ZS190 engines are known to be higher maintenance and finicky (i.e., starter chains breaking).
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