Kaw doesn't do the extenders, they were contrived by an astute mechanic, machinist, who didn't want to spend the money, time, and labor to redo the chains. Many people have used them to gain time, before the enevitable and or sold out to some shmuck without any warning. They work but as stated, the worn chain allows the cam's to retard with the wear. And worn chains wear faster as they wear ! The new Kaw chains are better than the old ones. Do as you want to.
'97 VN1500 91 Cubes Of Custom CLASSIC
Vance & Hine 2to1
engine, forks, ignition & carb mod's
WebCam cam & rockers hard weld & grind
NEW TOP END, NO LOOKS ALL GO GO
Maxx intake manifold system & super G carb 44mm