[Pinchers]

I have a NX250 and im looking at getting some more power out of it,its totally standard at the moment so any ideas what i could start with to get some extra BHP would be great.

Cheers

 

[IgorVigor]

Well I would have thought the first thing would be change the exhaust...

Dont know if anyone does a performance exhaust for the NX250, so you might have to get a different can and mod the mountings a bit.

Open up the airbox a bit, and upjet if required.

After that...I dont know...I dont think your going to get much from a 26hp 250 single...

 

[Mervinh]

have you tried looking into the CBX250 RS that had a rfvc 250 engine
it had 2 carbs on it and turned out summat like 33 bhp i think
merv

 

[IgorVigor]

I dont think that will work...

The NX250 afaik is a liquid cooled engine that wasnt used in much if anything else...the only way I think you will increase the power beyond what has already been mentioned is try and get a big carb and set that up...

Unless you can get a big bore kit for the engine...

 

[Kjell Lindberg]

I have a NX250 and im looking at getting some more power out of it,its totally standard at the moment so any ideas what i could start with to get some extra BHP would be great.

Cheers

The NX250 is quite a nice bike for its size.
But the market is not flowing with "Go fast" parts for it.

However a less restrictive silencer/End can, combined with an adjustment of the carb jettings, could very well produce a few extra horsies

In fact, I would assume the NX250 would respond to the same changes as the larger capacity RFVC engined Hondas.

Edit: Praise the Man!

Honda have OEM parts for tuning!

Honda had a special model called AX-1
Just get your local Honda dealer to supply you with the
camshaft and carb jets from the AX-1
3 additional HP

>Another version of Honda NX-250 was Honda AX-1. Using the same chassis as the NX-250, came standard with alloy rims, aluminum Pro-Link rear suspension and dual round headlights, different camshafts and carburetor settings. AX-1 outputs 29 HP at 8500 RPM at 11 to 1 CR and 2,4 Kgm torque at 7500rpm.<

 

[IgorVigor]

Good find there!

Order the camshafts and carb jets as Kjell said,
and then get an end can from some other bike and modify it...

Maybe a sports can for the NX650 would fit (might need to be cut down though)

 

[Guest]

Well i have rebuild my ... to the max , as I like to say

But I got just the best parts for it , but i did not hack it

About the exhaust , i got the most expensive one from Marving .

More info here .. JULY 07

 

[longjohn]

Hi there..

I was surching for a power upgrade for my NX when I Googled this topic.

Placing the cam of a AX-1 in a NX is written on more internet site's.
But has someone over here tried it?
What was the diferance, dyno print perhaps?

 

[Dilantha]

upgrade your spark plug (iridium)
Rejet your carburetor
Upgrade your exhaust system

 

[bat333]

The NX250 is quite a nice bike for its size.
But the market is not flowing with "Go fast" parts for it.

However a less restrictive silencer/End can, combined with an adjustment of the carb jettings, could very well produce a few extra horsies

In fact, I would assume the NX250 would respond to the same changes as the larger capacity RFVC engined Hondas.

Edit: Praise the Man!

Honda have OEM parts for tuning!

Honda had a special model called AX-1
Just get your local Honda dealer to supply you with the
camshaft and carb jets from the AX-1
3 additional HP

>Another version of Honda NX-250 was Honda AX-1. Using the same chassis as the NX-250, came standard with alloy rims, aluminum Pro-Link rear suspension and dual round headlights, different camshafts and carburetor settings. AX-1 outputs 29 HP at 8500 RPM at 11 to 1 CR and 2,4 Kgm torque at 7500rpm.<

I have looked and looked into this. Cams for NX and AX have same part number. The specs show AX-1 has less hp.