Low End Power

[Cdndrtbk]

I'm looking for some low end power, a bit more grunt to get the wheel off the ground. Does anyone have any feed back on exhaust systems, engine mods, etc... that may help me out.
Thanks

 

[fishhead]

consider the 305 351 or 400 kit from HT Racing.

 

[cactusreid]

A fmf Gnarly pipe gives pretty good bottom end grunt. also a 1 tooth frt sprocket drop is a cheap experiment for more bottom end.

 

[sosomechanic]

Try one of the carb divider plates

I made one for my '03 RM 250 hoping to bulk up the low end and it made a very noticeable difference. Extended useable chugg range a good deal lower and really made the response clean and quick at low RPM's with more torque. Regards, Michael.

 

[Jaybird]

Changing the final gearing is the cheapest and easiest way to move the power to the low end.

 

[highmileage]

Ht Racing has the set-ups for that bike. They have options that are very cheap (around 100.00) to full on 351 kits for a very reasonable price.

BTW-it has been well documented that in stock form that the bike needs significantly lower gearing to perform with acceptable low end snap. 12/50 or 13/52-53 are fairly common choices (stock/no mods)

To give you an idea of how much power increase (351 kit w/head mods) some are then choosing 14/50 or 15/52 post big bore kit installation as it will pull it well.

 

[cujet]

From what I have seen, that engine does not make serious wheelie power, even in slightly modified form. I think that more displacement is necessary.

Chris

 

[marcusgunby]

Yes its basically a 400 engine and wasnt really designed to be a 250-you will need a big bore kit IMO.