I switched the Pretty Hate Machine to these Gravel King SKs and they rock. Posted byvelocidaveMay 19, 2017May 22, 2017Posted inpushbikes The next step is to pick up the 40s and set them up tubeless. Share this:TwitterRedditEmailPocketMoreFacebookPrintLinkedInPinterestWhatsAppLike this:Like Loading... Published by velocidave I like to do things on two wheels. View more posts