The gearing on the Triumph Daytona is notoriously long... anything less than 20mph is a struggle. Wound out, 1st gear will take you well past 70mph. Seeing that I was at 12,000 miles with the original chain I figured it would be a good idea to tackle two problems at the same time. After some research on http://www.t595.net I decided on a 45T rear sprocket to replace the factory 43T. http://www.sprocketspecialists.com was one source I considered, but I ended up using http://www.afamusa.com/. I also decided to go with the 520 chain conversion... afamusa made it easy, I called them up and told them what I wanted, no problem. For about $220, I got RK's best Heavy Duty XW-Ring chain, a steel 18T front, and an aluminum 46T rear (I would have had to wait for a 45T, so I decided if 4.5% shorter gearing was good, 6.6% would be better. :) ) I also ordered some Carbone Lorraine pads through the t595.net shop. The fronts are back ordered for a week or so, but the rears showed up today, just in-time for me to install them with the new chain and sprockets. The installation was uneventful (other than a few rain showers) and it only took about 2 hours taking my time. I really love working on this Triumph... it's so easy compared to working on my cars. Even the grease on my hands is easier to wash off. I found that my rear brake pads were almost completely shot... almost no pad material left. Must have been the previous owner, as I almost never use the rear. I did weigh the chain, and the new chain is 525g (1.15lbs) lighter. I forgot to weigh the new sprocket, but it had to be at least half the weight of the steel original. So far, I am totally happy with the upgrade. 46T on the rear is perfect (IMHO), I lucked out that they were out of 45T sprockets. Around town the bike is less like my old FZR400 off the line, and much more like a liter bike should be. I barely need to slip the clutch to get away now. Puttering around at parking lot speeds is a lot easier too. And I can't really notice the difference at highway speeds. Oh yeah, as expected, wheelies come pretty easy too... at about 5 or 6k rpm it is simply a matter of yanking back on the throttle. I'm still too much of a pansy to really loft one (I've wheelied the scooter more impressively) but it still puts a grin on my face.