I know this thread is old, but I wanted to make sure I spread the knowledge. The URBAN SPORTS Triumph Genuine Levers fit on the Rocket 3 Roadster (I have a 2014).
The box only lists the Sprint ST, Street Triple and Tiger R; however I fitted them at the dealership in about 5mins. 7mins if you add clutch adjustment.
At $179.99 USD, they are **** pricey but they are a true fit and certainly feel like they cost that much. lol! Luckily I had one of those dealership promos where I got some free accessories.
Part # A9620037 : ADJ LEVER KIT, STD, LNG
Based on the same "looking" assemblies, I'm going to go out on a limb and say the shorty levers will fit too. I haven't personally fitted those though.