One of my TY175s has been a test horse for modifications since I got it in 1976. The latest change I have made is to lengthen the swingarm by 45mm. The frame on this bike has already been changed in a way that has produced a steeper steering head angle but retained the standard wheelbase. It also has TY250B forks and a 205cc motor. The wheelbase before the swingarm extension was 48.5 inches, which is quite short for a trials bike. I felt it might be nicer to ride with a longer wheelbase and with