i know this probably get asked a lot but will it make much of a difference taking it off and putting a twin-airfilter a k&n pre-charger on aslo how much should i pay for a good ex400 rear shock
yeah 400ex shocks are better than stock. the blaster stock shocks are horrible.
Well 80 is a lil high for me. Look for a z400 rear shock also. Same shock, different quad. would look for 50-60 US dollars or IDK what european monies are worth. And yes the airbox lid delete will need a higher jet to give some company to more air coming in to your Yamaha Yfs200rr Blaster Atv Carburetor.
Or anohter recomendation is upgrading to a new carb(YZ85, KX85, Rm85, CR85) and a Outerwears lid cover.
You will certainly feel a power increase with no lid / vents. I run vents. Up the jets a few sizes and you'll be set.
As far as shocks... the 400ex are very common to upgrade. If you do, buy Ken Oconner's bushings. Make them fit perfect.
http://kenoconnorracing.com/400EX Shock on a Blaster.html
Well 80 is a lil high for me. Look for a z400 rear shock also. Same shock, different quad. would look for 50-60 US dollars.