1carbontech is good quality but a little overpriced.
places like bestem have near-same quality for cheaper. However Don't go to Tekarbon is shitty, I use to like them but every item they send has a crack or scratch , or missing vital mounting points. The carbon fiber quality was good but they're fuck ups and they will "fix" it by sending you a new one, but you have to shell out $$$$ for the new one and wait for a refund (stupid ass policy) AND pay for shipping, but basically BESTEM is the way to go. They sell on ebay. Don't go with Tekarbon.
Go for BESTEM , they sell on ebay under username cruiserbackrest or cruiserbackrests one or the other.