Question about 2001 MZ 125 SM

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I wish to up grade my bike to it more can i do that?where can i get the performance part for it?im riding mz125 sm and im in malaysia

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If you are serious about more HP then get a race cam for the bike. Hold tight to the handlebars. Contact Web Cam Racing (1-951-369-5144) in California and they can fix you up. I estimate $300us. Add and shipping both ways. The web address is You would ship your cam to them by Federal Express and they would modify the cam to your specifications then send it back. Neither you or I can give them degree angles for rise or duration or any other spec they may need, so you just need to tell them what type of racing you do (street, track, quarter mile etc ), and what you want from the cam, take off from the line, top end speed, torque, etc.. Basically, tell them you just want to wax anyone dumb enough to challenge you street.

Don't get too radical with the cam. Go too far and the bike will only start with a car pulling you at 30 mph. I am serious. Tell them you want to start the engine using the kick starter. Also tell them any modifications you have made > air cleaner, sprockets, tires, exhaust etc.. ASK FOR THEIR RECOMMENDATIONS on the above and on ignition timing. You may have to get a different CDI to manage the more radical timing.

Okay, I have given you my best. As I said, hold on tight to the bars. Do me a favor and don't kill yourself. You are playing with fire here. I am serious about that as well. I forgot to ask / mention, who will do the cam removal and re-install the cam? I strongly suggest the dealers service department so you have an experienced hand in the mix. Also, you will probably need to re-jet the carb. Ask the cam shop about that as well. There may well be a cam shop in Malaysia or closer than California in the USA. Check around A “very helpful” rating for this answer? Thanks!

Posted on Jul 02, 2009

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Buy a good floor pump with a gauge (see "How to Buy a Bike Pump," under Related eHows). A small, frame-mounted pump is useful only for roadside repairs.

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hi anbudharin; welcome to the forum!
yamaha RX100 bike is excellent
1) no maintenace 2) engine power and pickup awesome 3)best suited daily ride 4)especialy its sounds rocking in the city
If anyone planning to buy used Yamaha Rx100, Just go for it by closing your eyes. If you could spend few hundreds initialy you can renew ur bike as like new one which you cant get it from any other bike

Keep track of the 2T oil regularly, if you ride a bike without oil, performance of the engine may go down. I drove this bike form bangalore to hubli once in a three month and I love to ride this bike on such a long drive
if u want seconds pls gothrough this classifides

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Nsr 125 problem

It may be a safety switch in the clutch lever or bike stand switch being a bit sticky or broken wire in the wiring harness near the steering head that bends alot.

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1 Answer

Poor high performance

and I was having very poor high speed performance. The bike could just barely hit 70-75 but I was loosing speed going uphill (even on slight grades). I could maintain 55-60 MPH but anything above that and the bike just didn't have any power. Probably needs a fuel system cleaning, Stu. Drive-train? Not likely, based on what you said. However, if the RPMs are rising without an increase in MPH, well... that's a different story. What won't help: High octane fuel nor octane boost. Your Honda should do fine with 87, and 93 ain't gonna clean the crud out. What may help: SeaFoam (from the auto parts store) may clean things out fairly well. I've had good success with it in situations like this, but it may take several doses to see improvement. Standard dosage is one ounce per gallon of gas. New spark plugs won't hurt but you may not notice any difference. What would be better: An all-out attack on the carbs, including disassembly, soaking in carb dip, re-build kits and a good synchronization. BTW, a decent carb-sync kit can be had for around $40. I'm glad you have a manual - lots of guys try to work on their bikes without 'em. Wacko Rolling Eyes It's like bashing my head against a wall... Oh... welcome to the forum!!!,,,

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