Is to integrate the exhaust with the body. Underneath it same old circular section.
Yeah - square shaped tube causes all sorts of undesirable turbulence in fluids. I think the square exits look kind of wank too.
@Jung started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Is to integrate the exhaust with the body. Underneath it same old circular section.