20. Sunday Ian Schwartz
Photograph By Sunday Bikes
Ian Schwartz's version of the Sunday Second Wave frame was the first to replace the seat tube with a Pivotal-friendly seat mount. Other brands followed suit soon after. "Prior to this frame he took off his seat post clamp and JB Welded a post in. Then he shaved down the seat tube to make it look smooth," said Sunday when this frame was introduced in 2007.