Kayaba A-kit Shock for Yamaha YZF 250 - 450 2014 and up

What is the difference between the 2017 and 2018 shock ?

Hi, I was told that the 2017 shock would not fit the 2018 450.

But I just asked my dealer about it and he confirms that it will fit the 2018 450. He switched an Ohlins shock from a 2017 450 to a 2018 450, bolted right on, no problem.

MX Wout wrote:

Kayaba A-kit Shock for Yamaha YZF250 2014-2018 and YZF450 2014-2017.
Shock has very low hours and is in excellent condition.
Selling for US$1000 (including shipping)

I was misinformed, shock also fits the 2018 450

$2,500.00 for the set of A kit fork’s and Shock ?For the yz450f