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Overtake Saikou Rear Differential (High Power Version) for 2009-19 Nissan GT-R [R35]

For many owners of modified GT-Rs that frequent the circuit, the limitations of the factory differentials have become points of frustration. As opposed to the traditional “locking” limited slip differential (LSD) as people generally know them, the OEM differentials are a torque-biasing type, which under normal conditions function like a standard open differential, and under slip, transfer torque to the wheel with the most grip. These torque-sensing differentials work well for GT-Rs with factory power levels, but for cars with higher power, when the car’s weight is shifted off to one side / corner, the differential lack of a lock function is unable to compensate and ends up permitting wheel spin.

Like those used on race cars and in many high-horsepower applications, the Overtake Saikou Rear Differential is a clutch-type LSD. The difference with clutch type LSDs, as opposed to torque-biasing differentials is in how they handle power. They feature numerous, small friction [clutch] disks that have a set preload (tension), which allows the differential to “lock,” causing the wheel experiencing slip to slow down and regain traction. The rate at which the differential locks (called the ramp) is also adjustable to suit driver preference and driving style, allowing for a predictable engagement and cornering feel.

Produced in collaboration with famed motorsports drivetrain component supplier Drexler Motorsport, the Overtake Saikou Differential was engineered using Drexler’s decades of DTM, FIA GT, WTCC and Formula experience to Overtake’s exacting specifications of improved on-track performance, at no compromises for the R35 GT-R.

Following a major race win, former Formula Ford and Formula Renault Pilot and current NASCAR and GT3 GT-R Driver Alx Danielsson had this to say about the Overtake Saikou Differential:

“That [Overtake Saikou Rear Differential] made ALL the difference and propelled us to the podium yesterday in one of Europe’s biggest time attack race series. We have tried two different diffs before, but they couldn’t handle our car’s 840whp on the massive slicks, but the Overtake just wants more. In fact, it’s so good we now have to start modifying other things just to keep up with it. Amazing! So happy right now!”

With the capability to handle over 1100hp (per differential), the “High Power” version of the Saikou Rear Differential is designed specifically for track-driven GT-Rs with considerably upgraded horsepower levels in mind.

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions.

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