I have a 19 Tracer 900 and I installed the Yamaha OEM lowering “dog bones.” I found that despite only lowering the seat height by 9/16”, for me, the bike went from being a tipopotamus and too tall, to something I could manage. I do have a complaint however. I also lowered the front forks by the same amount and now my center stand is and to a smaller extent, the exhaust are being scraped because there is no longer enough ground clearance.
I just don’t understand why the seat height, on the lowest setting, is so damn tall. This isn’t an adventure bike. The rear subframe geometry should/could have have been designed to accommodate a lowered seat height without compromising ground clearance. For me, it is nearly a fatal flaw of an otherwise perfect bike. I’ve been riding 35 years and I understand under perfect conditions I can keep the bike on the rubber, but I don’t live in a perfect world and I want to have complete control at all times.
Except for being way too tall, OEM mirrors that suck balls and a windscreen that blasts turbulent air directly at my helmet, I love my tracer but the excessive height is by far the most difficult/expensive/impossible problem to solve. I should have sprung for the Ninja 1000.