The tank is only $140............ IDK why people think it's expensive lol. If you can DIY it then awesome, if not then it should be under $200 to have it done. Pretty sure by the book you're supposed to remove it to do the valve adjustment and the dealers only charge ~$150 for that so I'd estimate $100 to replace the tank.
A forum community dedicated to Honda CBR 250 owners and enthusiasts. Come join the discussion about performance, racing, modifications, troubleshooting, maintenance, classifieds, and more!