{"product_id":"zsm-s30z-coilover-custom-tuned-for-datsun-240z-260z-280z","title":"ZSM S30z Coilover - Custom Tuned for Datsun 240z\/260z\/280z","description":"\u003ch3\u003e Our S30z Coilover\u003c\/h3\u003e\n\u003cp\u003eWe are proud to finally release our S30z coilover. This is something we have been developing on our shop S30z over the past 2 years.\u003c\/p\u003e\n\u003cp\u003eOur target is to provide a product that is specifically designed for the S30z chassis. Our dampening has the breadth to be daily driven over the roughest streets, to canyon driving, and full track use.\u003c\/p\u003e\n\u003ch3\u003ePartnership with Swift Springs\u003c\/h3\u003e\n\u003cp\u003eWe have worked in tandem with Swiftsprings to calculate and analyze ride frequencies for the S30z chassis. This has allowed us to have total control over our dampening. We can tune for exactly what we want.\u003c\/p\u003e\n\u003ch3\u003eExtensive R\u0026amp;D Process\u003c\/h3\u003e\n\u003cp\u003eWe have gone through a lot of R\u0026amp;D and thousands of street, canyon, and track miles, constantly critiquing and adjusting settings.\u003c\/p\u003e\n\u003cp\u003eSome of the things we have tested for are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValving\u003c\/li\u003e\n\u003cli\u003ePiston design\u003c\/li\u003e\n\u003cli\u003eShock oil viscosity\u003c\/li\u003e\n\u003cli\u003eSpring rates\u003c\/li\u003e\n\u003cli\u003eShaft length\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonotube damper with proprietary piston design and valving\u003c\/li\u003e\n\u003cli\u003e32 clicks of rebound adjustment (1-way)\u003c\/li\u003e\n\u003cli\u003eSpring rates: 6kg front \/ 5kg rear\u003c\/li\u003e\n\u003cli\u003eJDM standard thread pitch \u003c\/li\u003e\n\u003cli\u003eStandard JDM 60mm spring perch\u003c\/li\u003e\n\u003cli\u003eMain and helper springs included\u003c\/li\u003e\n\u003cli\u003eThrust sheets as standard\u003c\/li\u003e\n\u003cli\u003eCamber plates included\u003c\/li\u003e\n\u003cli\u003eLower perch to be welded on OEM strut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Science Behind the Comfort\u003c\/h3\u003e\n\u003cp\u003eOur spring rates (6kg\/5kg) are stiffer than other options on the market like T3 and BCs, but our setting actually feels softer. We achieved this because we looked at the S30 chassis frequency. This allows us to tune out unwanted harmonics and create a balanced system.\u003c\/p\u003e\n\u003cp\u003eWith our coilovers you will absolutely be able to daily drive on the roughest roads.\u003c\/p\u003e\n\u003ch3\u003ePerformance When You Need It\u003c\/h3\u003e\n\u003cp\u003eDon't think our valving is just for comfort however - with 32 clicks of adjustment, we can quickly increase performance and be ready to rip canyon roads and be competitive on track.\u003c\/p\u003e\n\u003cp\u003eEven in our stiffer settings, the ride quality is still very nice and can still be driven on the street. This is because of the frequency tuning we did and the balance we have between spring rate and dampening.\u003c\/p\u003e\n\u003ch3\u003eUser-Friendly Adjustability\u003c\/h3\u003e\n\u003cp\u003eOur valving is tuned to be in a usable range. Since we have data on everything, we will be providing baseline clicker settings for street and track.\u003c\/p\u003e\n\u003cp\u003eWe chose a 1-way adjustment because we want enthusiasts to not be afraid of adjusting their dampers to their liking and driving style. Our adjustments are distinct enough to feel and adjust valving at a consistent rate. Within a few clicks, we can change the car's balance from understeer to oversteer for driver preference.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonotube coilover dampers (set of 4)\u003c\/li\u003e\n\u003cli\u003eCamber plates\u003c\/li\u003e\n\u003cli\u003eSwift Springs main and helper springs\u003c\/li\u003e\n\u003cli\u003eSwift Springs thrust sheets\u003c\/li\u003e\n\u003cli\u003eLower perch for OEM strut welding\u003c\/li\u003e\n\u003cli\u003eBaseline setup guide for street and track\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Upgrade:\u003c\/strong\u003e Thrust bearings with Swift Spring protective bag - $160\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59144288501841,"sku":null,"price":2699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/20260226_130238.jpg?v=1772172259","url":"https:\/\/zsmcustom.com\/products\/zsm-s30z-coilover-custom-tuned-for-datsun-240z-260z-280z","provider":"ZSM Custom","version":"1.0","type":"link"}