I remember rear wheel drive "posi-traction" or rear ends using clutches that apply nearly equal drive to each wheel. Newer "Limited slip" would stall the spinning wheel and drive the other. This was a conventional differential design for years.
We wanted the posi style to hook-up and go fast in a straight line so Posi's and Ford 9" lockers were trick. 4-wheel hardcores want locking power driving all wheels. I have driven both styles in winter snow conditions and liked the posi way better than limited slip. Often you can drive out of a situation where the LSD gives it up.
This was rear wheel drive world so I'm not sure if it even applys to MC. Guys racing these buggers may get a treat from the option but can the basic street driver tell? When it comes to winter driving will LSD be a blast from the past? ... carry traction sand in the boot mates.
