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Old February 6th, 2020, 11:01 AM   #27
F9zSlavik
ninjette.org member
 
Name: Gabriel
Location: San Diego
Join Date: May 2019

Motorcycle(s): Ninja 250 2005 / SFV650 2013

Posts: 41
Quote:
Originally Posted by DannoXYZ View Post
Not sure what Kawi was thinking, but they increased rake-angle on 300, making it slower-steering than 250. Add +15 lbs and 300 handles like pig compared to 250.

Front suspension upgrade depends upon your usage and weight. Go to RaceTech's site and enter your weight into their spring-rate calculator and see how it compares to stock: https://racetech.com/ProductSearch/1...250R/1986-2007.

You'll really want to use dyne-tuning to dial in mixtures once you have exhaust installed. Don't get rid of air-box, you'll have issues in cross-winds and really no benefits (no more power than K&N in stock airbox anyway). Factory airbox poses no restriction to flow, so removing it won't gain anything.

If you have factory handlebars, and they're bent, pretty much gotta toss them. You can replace them with 37mm clip-on handlebars. Lowers bars about 2" and you can replace just bar section cheaply if bent later.
https://www.aliexpress.com/item/4000499587147.html

If you already have clip-on handlebars, you can just buy some 7/8" (22.2mm) tubing and replace just bar sections. I usually keep 11" section in toolbox for quick replacement at track.
https://www.ebay.com/itm/192996657715
SO much useful information!

I don't know much about the rake angkle (I have to look at some youtube videos now lol) but I think thats explains why I can heavily lean the 250 way more easily than the 300 even with a passenger!

OK, so keep stock airbox! Gotcha. Do I change out the air filter to something else too or leave that stock as well? Stock air filter looks like a square foamy clothe material. If there is another air filter I can use, what do you recommend?

When you say "dyne-tuning to dial in mixtures", are you saying I take it to a specialize place for that OR is that something any motorcycle mechanic can do? My friend the mechanic says he would just tune it by ear basically I don't think he has any special tool for it. I don't know much about this so I am hoping you can point me in the right direction.

The purpose of me doing this to my bike is to have a way better riding experience. Not looking to break speed records but I do miss the responsiveness of the 300 and I am hoping to get something similar from the 250 from jetting it and having the after market exhaust.

I think I mentioned the jetting kit I bought for it, there should be no issues than installing that with stock airbox and yoshimura exhaust right?

Thanks for the handlebars info!!!!
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