The steerer tubes we use in our truss forks now come in two lengths: 345mm and 430mm. The standard has been 345mm, and for most riders, on most sizes of our bikes, it's great and has plenty of extra steerer, but if you have a 25" Plus and want lots of spacers under your stem, or if you just want to get your stem as high as you can, the 430mm will let you do so.