New XR125L Off Road Bike

Russell · Two Stroke Sniffer Joined: 04 Feb 2002 Karma :

Having myNSR125 for a couple of years, I have just brought a 2nd bike, the XR125L for off-roading and dirt riding. The bike is great, good handling and suspension, ideal for off-road use. The power is a little disappointing, no where near that of my de-restricted NSR.
Does any one have any knowledge how I can get more power out of this 4 stoke honda engine. I did remove the air snorkle from the air box for a while, but the engine overheated. I believe I need to do some work on the jetting and remove some restriction in the exhaust outlet.
Any help would be greatly appreciated.
Russell

mr.z · World Chat Champion Joined: 04 Feb 2004 Karma :

I'd imagine your about at the limit of power, unlikeley to have been restricted as it wouldn't need to be (being a 125 4stroke)

Best thing you could do is change the sprocketts for one/two teeth less, you'd get more acceleration/power and less top end but its not as if your going to get to 70 very often on dirt tracks?

Just a thought...
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SDR · Renault 5 Driver Joined: 01 May 2004 Karma :

XR125 has a cbr engine, you are lookin at restricted NSR power!

Sparks! · Sir Tart-a-lot Joined: 30 Aug 2003 Karma :

The XR125, despite the XR based name, isn't really designed for off roading. It's a learners bike based on road use with a low powered engine. It never really was meant for off-road and the XR name, off road styling etc is more of a token gesture if anything, a bit like the Derbi Senda 50cc and so on.
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