Sorry about your friend :(
I've had the lock rite for about 20 years, all street use(okay some dirt). Most of the time I forget it's there. Tight corners it makes a soft clunk-clunk-clunk sound. On a freeway overpass corner I decided to punch it and the car stopped turning and went straight toward the concrete. Basically shat myself right there. It's a completely on or off thing, it doesn't have any slippage at all.
The advertisement back then said you could install it without removing the ring gear which wasn't the case unless you grind away a good amount of the ring gear teeth to get the pin out. Once or twice it's made a loud bang when getting on the throttle but that's it.
Thanks for all the replies fellas
