Z1's Ultimate Built Differential Upgrade is a complete R200 differential built to Z1's specifications. Select the LSD, Final Drive ratio, a Bushing Type and Fluid Type that best fit your needs. Choose to pay the refundable core charge to avoid downtime or send your rebuild-able differential core first, and we will ship your ultimate built differential sealed up with the Z1 High Capacity Differential Cover complete with stub axles and ready to bolt into your Z or G. Just add fluid, and enjoy!
Note: The Z1 Ultimate Built Differentials ship separately from the Z1 Differential Cover, Fluids, and Bushings to prevent damage from shipping.
What's Included:
Every Z1 Ultimate Built Differential is assembled with the following:
Differential Type
Z1 S-Pro (Helical LSD Type)
The Z1 S-Pro addresses these shortcomings without giving up great street manners. The S-Pro is a helical differential that is a dramatic improvement over open & viscous differentials given its considerably greater ability to distribute torque at both wheels. With its internal gear design, it boasts exemplary street manners and is operationally quiet when compared to clutch type differentials that tend to chatter or clunk when cornering at low speeds because of axle bind. The Z1 S-Pro differential is a helical unit that exhibits no axle bind and provides smooth operation in any circumstance. Because of the internal construction, the Z1 S-Pro is low maintenance (only regular fluid service intervals) and ensures an exceptional life span with no special fluids or friction modifiers needed.
Z1 R-Pro (Clutch Type)
The R-Pro is a 1.5-way clutch-type differential engineered for superior torque distribution to both wheels. As a 1.5-way unit, it provides more aggressive locking under acceleration while allowing controlled slip under deceleration, enhancing cornering stability without excessive resistance. The carefully tuned progressive ramp angles ensure just the right amount of tire slip when off-throttle while maintaining full lock when power is applied. Clutch-type LSD's are always at least partially locked. This means if lifting a tire on-track, both tires still receive torque. This is important, at least when compared to viscous or helical LSD's, which act like an open-differential when you lift a tire.
Clutch-type differentials are often associated with noise and clunking at low speeds due to high preload and aggressive ramp angles. The R-Pro minimizes these drawbacks through precision-machined ramp faces and cam geometry. This design allows for a moderate preload, delivering balanced street manners without sacrificing track performance. Additionally, the tight tolerances between the ramp face and cam ensure a fast, responsive transition between throttle states, eliminating the latency found in many clutch-type differentials.
Differential Cover, Fluid, and Bushings
Once you receive your Z1 Ultimate Built R200 Differential all you need to do is install or swap over the Z1 Differential Cover and install Z1 Differential Bushings, then fill with fluid after installation and enjoy your new differential. (Break-In procedure may be required depending on differential selection).
When the stock rear differential bushing fails you often end up with a lot of slop and even clunking in the rear end. By upgrading to the Z1 Urethane or Z1 Solid bushings you stiffen up the rear end to handle harder launches and smoother shifts. Plus with the upgraded fluid you don't have to worry about oil breakdown at higher temperatures.
Please select from the options below. Need help or advice? Give us a call at 770-838-7777.
Please note: We rebuild your differential core so all parts must be intact and present when your core is received. Your differential core must be assembled with all parts in good condition to receive full credit.
Z1 Built Diffs are currently assembled to order. Z1 expects built differentials to ship within 4-6 weeks from the original order date assuming core charge has been paid or core has been received.
Fits:
- 2007-2008 Infiniti G35 Sedan (V36)
- 2008-2013 Infiniti G37 Coupe (CV36)
- 2009-2013 Infiniti G37 Sedan (V36)
- 2009-2021 Nissan 370Z (Z34)
- 2014-2015 Infiniti Q60 Coupe (CV36)
*** This item does not qualify for any additional discounts or promotions *** |
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