Designed as a replacement for the front steering knuckle of S13, S14, and S15 (we know there's at least a handful of those in this country) Silvias, the GP Sports Hyper Knuckle kit features a repositioned steering arm as well as a lowered ball joint seat for the lower control arm. The Hyper Knuckle kit is also split, allowing spacers to be inserted between the steering arm and the rest of the knuckle-perfect for extremely lowered vehicles. Not only does the GP Sports knuckle reduce bumpsteer problems, it also returns the lower control arm to a position that more closely resembles stock, thereby raising the roll center back to an optimum height. As an added bonus, the steering arm design also increases the amount of steering lock available, which is handy if you're a drifter or autocrosser.
The Hyper Knuckle kit costs the equivalent of $938, not including shipping from Japan. There's also a cheaper non-adjustable Super Knuckle kit available from GP Sports that costs $650. Head over to GP Sports (www.gpsports.co.jp) to find out more.
Mine's Releases Differential Cooler For 350Z
Japanese parts manufacturer and GT-R tuning gurus Mine's released a differential oil cooler kit for the Z33 350Z, giving owners who regularly beat the snot out of their Z a means of protecting their differentials from any temperature-induced failure.
Temperature control is of particular importance for those running an OEM-type viscous limited-slip differential, which can lose it's locking ability if the oil gets cooked under the strain of hard driving. Mine's differential cooler kit contains the cooler core, mounting brackets, hose relays, and an electric oil pump that circulates the fluid through the core when it gets a bit toasty. The extra piping also increases oil capacity of the differential to 1.4 liters, meaning there's more fluid to absorb the heat before it requires cooling. It's not cheap though; from Mine's it costs the equivalent of $1,607, so it's probably something that's best left to the more serious racer.