The 4 wheel steering feature of the 300zx twin turbo an be troublesome. experienced drivers will notice a vague feel from the hicas assembly as they pitch the car into a hard corner. the factory unit is subject to wear and replacement is quite expensive. at 4 pounds, our hicas eliminator saves 8 pounds over the factory setup, and eliminates the 4 wheel steering. it's precision machined aluminum billet bar and return bypass fittings. our new design includes bossed ends to better hold the factory boot seals.