Camshaft Daytona #86878 is Hi speed range model, marked : DT190-2
Camshaft Daytona #87163: is Low and mid range, marked DT190-3
Camshaft Daytona #87347: is Low range, marked DT190-4
DT190-1 : is camshaft for first serie engine all capacity, without decompression system and no more produced.
86878 / DT190-2 is genuine cam for 190 FSM/FS/FDX/FLX/SYS
87163 / DT190-3 is genuine for 150cc and 160cc engines
87347 / DT190-4 is genuine cam for 190 FE/FD/FZ5
Here is a dyno test comparing the 87347 and 86878 on an Anima 190cc with PWK36mm carburetor: