{"product_id":"tomei-technical-trax-advance-2-way-lsd-pro-kit-nissan-350z-370z-z-rz34-6mt","title":"Tomei Technical Trax Advance 2-Way LSD Pro Kit - Nissan 350Z \/ 370Z \/ Z RZ34 6MT","description":"\u003cp\u003e\u003cstrong\u003eTC102A-NSHX2 - Tomei Technical Trax Advance 2-Way LSD Pro Kit - Nissan 350Z \/ 370Z \/ Z RZ34 6MT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDeveloped for the Nissan 350Z, 370Z, and Z\/400Z (RZ34) with 6-speed manual transmission, this Pro Kit combines Tomei's aggressive 2-way mechanical limited-slip differential with a 3.916 final-drive gear set. It is engineered to improve rear traction, corner-exit acceleration, stability, and rear-wheel-drive control for circuit driving, drifting, winding roads, and other performance use.\u003c\/p\u003e\n\u003ch2\u003eTomei Technical Trax Advance 2-Way LSD Pro Kit\u003c\/h2\u003e\n\u003cp\u003eDeveloped for the Nissan 350Z, 370Z, and Z\/400Z (RZ34) with 6-speed manual transmission, this Pro Kit combines Tomei's aggressive 2-way mechanical limited-slip differential with a 3.916 final-drive gear set. It is engineered to improve rear traction, corner-exit acceleration, stability, and rear-wheel-drive control for circuit driving, drifting, winding roads, and other performance use.\u003c\/p\u003e\n\u003ch3\u003eProduct details\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eTC102A-NSHX2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003e2-way mechanical LSD + 3.9 final-drive gear set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplications\u003c\/th\u003e\n\u003ctd\u003eNissan 350Z, Nissan 370Z, Nissan Z \/ 400Z (RZ34), 6MT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngines\u003c\/th\u003e\n\u003ctd\u003eVQ35DE, VQ37VHR, VR30DDTT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eDrivetrain \/ Limited-Slip Differential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping size\u003c\/th\u003e\n\u003ctd\u003e15 × 13 × 19 in (37 × 31 × 47 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping weight\u003c\/th\u003e\n\u003ctd\u003e48 lb (22 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer MSRP\u003c\/th\u003e\n\u003ctd\u003e$2,170.00 USD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer availability at time of listing\u003c\/th\u003e\n\u003ctd\u003e2 in stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhy upgrade the LSD?\u003c\/h3\u003e\n\u003cp\u003eSport-grade RZ34 vehicles use an open differential, which can allow one rear tire to spin during acceleration or corner exit. Performance, Heritage Edition, and NISMO models use a factory mechanical LSD, but its mild calibration prioritizes quiet daily operation. Tomei's Technical Trax Advance LSD provides stronger lock-up and faster response for drivers seeking sharper rear-end control.\u003c\/p\u003e\n\u003cp\u003eBy transferring driving force firmly to both rear tires, the unit improves rear grip during corner exit, acceleration, straight-line stability, rear contact feel, circuit lap-time potential, drift control, and confidence on winding roads.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-capacity clutch-disc structure for strong locking performance\u003c\/li\u003e\n\u003cli\u003eDesigned to maximize rear traction in front-engine, rear-wheel-drive sports cars\u003c\/li\u003e\n\u003cli\u003eImproved driving-force transfer during corner exit\u003c\/li\u003e\n\u003cli\u003eStrong operation under both acceleration and deceleration\u003c\/li\u003e\n\u003cli\u003eSuitable for drifting, circuit driving, and aggressive performance driving\u003c\/li\u003e\n\u003cli\u003eDirect mechanical-LSD feel that can also be enjoyed on the street\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConstruction compared with the OEM LSD\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCase:\u003c\/strong\u003e Tomei uses a fully machined case, while the OEM unit is machined from a casting. The fully machined design creates more internal space for clutch discs while supporting high strength and lower weight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiscs:\u003c\/strong\u003e Larger-diameter external- and internal-tooth discs provide more effective friction area and stronger lock-up force.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal parts:\u003c\/strong\u003e The Tomei unit uses 12 discs per side (24 total), compared with 5 per side (10 total) in the OEM unit. The additional friction area supports stronger lock-up, better wear resistance, and more stable operation.\u003c\/p\u003e\n\u003ch3\u003e2-way characteristics\u003c\/h3\u003e\n\u003cp\u003eA 2-way LSD provides strong locking action during acceleration and deceleration, allowing the driver to actively control rear vehicle posture. It is recommended for drifting, circuit use, and aggressive sports driving. Drivers who prioritize easier deceleration behavior for street, winding-road, or grip use may prefer a 1.5-way configuration.\u003c\/p\u003e\n\u003ch3\u003ePro Kit 3.916 final-drive gear\u003c\/h3\u003e\n\u003cp\u003eThe factory RZ34 6MT final-drive ratio is 3.538. The included 3.916 gear set is approximately 10% shorter, improving acceleration response, shift feel, and the connection between second and third gear.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eFinal drive\u003c\/th\u003e\n\u003cth\u003eCharacteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFactory\u003c\/td\u003e\n\u003ctd\u003e3.538\u003c\/td\u003e\n\u003ctd\u003eMild gearing focused on highway cruising, fuel economy, and noise.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTomei Pro Kit\u003c\/td\u003e\n\u003ctd\u003e3.916\u003c\/td\u003e\n\u003ctd\u003eApproximately 10% shorter for stronger acceleration feel, response, and shifting enjoyment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eNissan OEM 6MT gear ratios\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e1st\u003c\/th\u003e\n\u003cth\u003e2nd\u003c\/th\u003e\n\u003cth\u003e3rd\u003c\/th\u003e\n\u003cth\u003e4th\u003c\/th\u003e\n\u003cth\u003e5th\u003c\/th\u003e\n\u003cth\u003e6th\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.530\u003c\/td\u003e\n\u003ctd\u003e2.324\u003c\/td\u003e\n\u003ctd\u003e1.624\u003c\/td\u003e\n\u003ctd\u003e1.271\u003c\/td\u003e\n\u003ctd\u003e1.000\u003c\/td\u003e\n\u003ctd\u003e0.794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eRZ34 speed comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eApprox. RPM at 100 km\/h\u003c\/th\u003e\n\u003cth\u003e6th gear at 7,000 rpm\u003c\/th\u003e\n\u003cth\u003eCharacter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM 3.538\u003c\/td\u003e\n\u003ctd\u003eApprox. 2,200 rpm\u003c\/td\u003e\n\u003ctd\u003eApprox. 318.6 km\/h\u003c\/td\u003e\n\u003ctd\u003eCalm ratio suited to highway cruising.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTomei 3.916\u003c\/td\u003e\n\u003ctd\u003eApprox. 2,430 rpm\u003c\/td\u003e\n\u003ctd\u003eApprox. 288.0 km\/h\u003c\/td\u003e\n\u003ctd\u003eAcceleration-focused; makes second and third gears more responsive.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eImportant notice\u003c\/h3\u003e\n\u003cp\u003eThis is a performance-focused mechanical LSD, not a factory-mild unit. Operating noise, chattering, and tire dragging may occur during low-speed turns or parking. It may not suit customers who prioritize quietness or OEM-like behavior.\u003c\/p\u003e\n\u003cp\u003eProfessional installation by an experienced, qualified technician is strongly recommended; specialized tools may be required. Always follow the supplied manual and warning labels. Performance parts may not be legal for public-road use in every area—check local regulations before installation and use.\u003c\/p\u003e\n\u003cp\u003eSpecifications, price, appearance, and kit contents are subject to manufacturer change without notice. Product photos are illustrative and may differ from the delivered item.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSource: Tomei Powered USA product catalog.\u003c\/em\u003e\u003c\/p\u003e","brand":"Tomei","offers":[{"title":"Default Title","offer_id":53785978831155,"sku":null,"price":1931.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0256\/5855\/6497\/files\/tomei-tc102a-nshx2-01.jpg?v=1785732799","url":"https:\/\/www.circuitspecr.com\/products\/tomei-technical-trax-advance-2-way-lsd-pro-kit-nissan-350z-370z-z-rz34-6mt","provider":"Circuit Spec R","version":"1.0","type":"link"}