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De-restriction advice please


Annaz

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Does anyone know how to de-restrict a Honda XR125?

It's a mates bike and he's sick of 57mph flat out!

It's been ages since I did anything like this and I reckon I'm out of touch with it :thumbsup:

Any advice welcome

Cheers

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i'd be checking for physical restrictors first, ie washer looking things either in the exhaustports or inlet ports if its a case of being restricted by cdi then i wish you the best of luck but some one knowledgable will be along shortly to tell you im a prat and not to listen to me.

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Is an XR125 even restricted in any way? :confused:

^this^

125cc 4T off-roader style?

Get used to not being able to crack 60mph.

It'll be sub-10bhp at the wheel and geared for very soft trail riding.

If it helps, tell him I have 4x 400cc off-road bikes that won't crack much more than 75mph...... But we never max them out off road.

Use it on the trails and it'll make a lot more sense.

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^this^

125cc 4T off-roader style?

Get used to not being able to crack 60mph.

It'll be sub-10bhp at the wheel and geared for very soft trail riding.

If it helps, tell him I have 4x 400cc off-road bikes that won't crack much more than 75mph...... But we never max them out off road.

Use it on the trails and it'll make a lot more sense.

I see where you're coming from Dave but it's just that it sounds so pathetic, like a sewing machine, so it probably is sub 10hp, in fact I have a chainsaw motor that would give it more power!

I'm telling him to grin and bear it, greenlane it a bit, or a lot, and when he gets through his test we'll all play on his SV650 :icon_salut:

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Stick a K&N style pod filter on it and go a size up on the jets. It might not do much in therms of performance but it'll sound better, enough to make it seem faster.

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I had a MTX125 and being a two stroke it seemed ok for what it was. I think it would do about 75 but I tried to keep it to 65 on the motorway or big A roads. When I looked into it the only difference between that and the road version was a slightly shorter first gear everything else was the same.

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If it's 57 flat out banging off the limiter another tooth on the front sprocket maybe? Has it been looked after. Basics like clean air filter etc.

Yep it's like brand new

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