My Gray Market Honda NSR 250R Street Bike Project

8379qtj10

Well-Known Member
Joined
Jan 22, 2007
Location
Washington N.C
I imported this about a month ago....It's a 1993 Honda NSR 250R MC21 SP
It a ultra light weight 2-stroke street bike only sold in Asian markets.
Total weight on this bike is 283 lbs. and it has a little over 55 hp at the rear tire.
This bike was used as a race bike and I am in the process of making the bike road legal again..headlight, signals, taillight.
I need to have the bike re-jetted as it's setup for 100LL AVgas
Magnesium wheels, fully adjustable Forks and Rear shock and a loud A$$ dry clutch. I sold an SV I loved for this mean machine. If you have ever ridden a big two-stroke dirt bike that about what the powerband feels like.
As I work on it...
ai324.photobucket.com_albums_k323_Styler_Colfax_2008_0813Image0019.jpg

As imported
ai324.photobucket.com_albums_k323_Styler_Colfax_photo.jpg

When finshed...one day....
ai324.photobucket.com_albums_k323_Styler_Colfax_marsar2.jpg
 
I imported this about a month ago....It's a 1993 Honda NSR 250R MC21 SP
It a ultra light weight 2-stroke street bike only sold in Asian markets.
Total weight on this bike is 283 lbs. and it has a little over 55 hp at the rear tire.
This bike was used as a race bike and I am in the process of making the bike road legal again..headlight, signals, taillight.
I need to have the bike re-jetted as it's setup for 100LL AVgas
Magnesium wheels, fully adjustable Forks and Rear shock and a loud A$$ dry clutch. I sold an SV I loved for this mean machine. If you have ever ridden a big two-stroke dirt bike that about what the powerband feels like.

Nice! I used to lust after a friend's TZR-250 (the yamaha version)

Prolly take more than just jetting for it to run reliably on pump gas... (that's if it's indeed tuned for race fuel.)
... ignition timing, compression, combustion chamber squish and shape, pipe design as well as jetting are the factors that'll cause detonation to destroy a highly tuned 2 stroke.

I've melted a few pistons and destroyed a few cylinder heads on my GP bikes throughout the years :D oops

If you have all the OEM stock parts you should be good to go.
:wheel:
Steve
 
I love the 2 stroke street bikes. I like the newer ones but I'm partial to the vintage 70's Yamaha RD350 and Kawasaki H2 750. Nothing better than when a built 750cc 3cyl 2 stroke hits powerband on pavement!!!:wheel: The H2 wasn't called the widowmaker for nothing!
 
back in my CCS racing days I used to love to watch the 250's race. those guys were crazy. Sweet bike.
 
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