I want to upgrade my 2.5 TF BB to a 2.5 coil. Is the only thing I need to buy the coils?

 

Yup!!! The remaining parts you have installed are identical to the coil kit. Unless you have the TF 9550 shocks installed with your BB...then you'll need to add the 1/2" rear spring retainer/spacer on your new rear TF coils so your coils don't fall out under extension.

Also - you may as well buy a COMPLETE 2.5" coil kit since it will be the same price for just the 2.5" coils alone. Don't ask me why. Then sell off the unused parts with your spacers as a complete 2.5" BB in the For Sale section

 

Can I upgrade to a 3" using the same shocks?