LSD - Kaaz - 2 way - GT86 & BRZKaaz Limited Slip Differential for GT86 & BRZ 1. 5 or 2 Way With oil. The 1. 5 way differential is suitable for all types of motorsport. With optimized performance during acceleration it carries a lighter lock up on deceleration which is best suited for traditional road racers. Despite the fact that 1. 5 way units have slight lock up on deceleration, many racers still use this type for aggressive motorsports such as drifting or gymkhana events. The 2