{"title":"Services","description":"\u003cp\u003eProfessional services for your classic Datsun. From JDM parts importing to engine rebuilds and suspension tuning, we offer expert services to keep your S30 running at its best.\u003c\/p\u003e","products":[{"product_id":"jdm-import-service","title":"JDM Import Service","description":"\u003cp\u003e\u003cstrong\u003eImport service for JDM parts from Japan.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe specialize in sourcing and importing authentic Japanese Domestic Market (JDM) parts directly from Japan for your classic Datsun and other Japanese vehicles.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: Contact us to discuss your JDM parts needs and we'll provide you with a quote.\u003c\/em\u003e\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59136227704913,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/image.png?v=1771995689"},{"product_id":"l-series-engine-rebuild-service","title":"L Series Engine Rebuild Service","description":"\u003cp\u003e\u003cstrong\u003eProfessional performance rebuilds of the L series engine.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe specialize in rebuilding and performance upgrades for Datsun L series engines (L24, L26, L28) for 240Z, 260Z, and 280Z models. Comprehensive engine rebuilding services including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete engine disassembly and inspection\u003c\/li\u003e\n\u003cli\u003ePrecision machining and balancing\u003c\/li\u003e\n\u003cli\u003ePerformance upgrades and modifications\u003c\/li\u003e\n\u003cli\u003eQuality parts and components\u003c\/li\u003e\n\u003cli\u003eProfessional assembly and testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Contact us to discuss your build and get a quote. Lead times vary based on complexity and build\u003c\/em\u003e\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59136229212241,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/image_37ff3ea7-8a94-4ab9-a6ea-b44bc88f0052.png?v=1772070707"},{"product_id":"suspension-tuning-service","title":"Suspension Tuning Service","description":"\u003cp\u003e\u003cstrong\u003eProfessional installation and tuning of ZSM suspension components.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe offer expert suspension tuning services for your Datsun, specializing in ZSM Custom suspension components. Our comprehensive service includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation of ZSM sport springs\u003c\/li\u003e\n\u003cli\u003eSway bar link installation and adjustment\u003c\/li\u003e\n\u003cli\u003eSuspension geometry setup and alignment\u003c\/li\u003e\n\u003cli\u003ePerformance tuning for street or track use\u003c\/li\u003e\n\u003cli\u003eQuality ZSM suspension components available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTransform your Datsun's handling with professionally installed and tuned suspension components designed specifically for the S30 chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: Contact us to discuss your build and get a quote. Lead times vary based on complexity and build\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59136231342161,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/image_a80c08aa-2db9-4384-a7fd-e82a1f151138.png?v=1772070146"},{"product_id":"custom-wiring-harness-service","title":"Custom Wiring Harness Service","description":"\u003cp\u003eThe S30Z electrical system is one of the most common pain points on these builds. Aging insulation, brittle connectors, and decades of questionable modifications add up fast. ZSM builds custom OEM-style wiring harnesses from scratch — designed specifically for the S30Z chassis and built to the standard the car deserves.\u003c\/p\u003e\n\u003cp\u003eEvery harness is hand-built in-house using quality wire, proper gauge sizing, and Deutsch connectors where applicable. We retain the OEM wiring architecture where it makes sense and improve it where it doesn't — the result is a harness that installs cleanly, functions reliably, and looks like it belongs in the car.\u003c\/p\u003e\n\u003ch3\u003eWhat We Build\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFull chassis wiring harnesses\u003c\/li\u003e\n\u003cli\u003eEngine bay harnesses\u003c\/li\u003e\n\u003cli\u003eCustom sub-harnesses and extensions\u003c\/li\u003e\n\u003cli\u003eEFI conversion wiring\u003c\/li\u003e\n\u003cli\u003eLighting and accessory circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOur Process\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConsultation to understand your build, modifications, and goals\u003c\/li\u003e\n\u003cli\u003eCustom design based on your specific chassis and components\u003c\/li\u003e\n\u003cli\u003eHand-built using quality wire, heat shrink, and proper connectors\u003c\/li\u003e\n\u003cli\u003eLabeled and documented for easy installation and future serviceability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Contact us to discuss your build and get a quote. Lead times vary based on complexity and build\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59139937796177,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/Service-S30Z_Custom_OEM_Wiriing_Service_4.jpg?v=1783670858"},{"product_id":"cusco-differential-rebuild","title":"Cusco\/R180\/R200 Differential Rebuild","description":"\u003ch3\u003eProfessional Cusco Differential Rebuild Service\u003c\/h3\u003e\n\u003cp\u003eComplete disassembly, inspection, and rebuild with precision machining and quality parts for optimal performance and reliability.\u003c\/p\u003e\n\u003ch3\u003eWhy Chassis-Specific LSD Tuning Matters\u003c\/h3\u003e\n\u003cp\u003eMost LSDs don't come tuned for your specific chassis out of the box. Chassis weight, horsepower, and tire sizing have a direct impact on the optimal LSD settings.\u003c\/p\u003e\n\u003cp\u003eCusco, being a true racing-driven company, has engineered numerous adjustment points into their LSDs. Working with their expertise, our goal is to develop specific ZSM S30z settings for both R200 and R180 differentials.\u003c\/p\u003e\n\u003ch3\u003eThe Cusco Advantage: Forged Housing\u003c\/h3\u003e\n\u003cp\u003eCusco LSDs are the only differentials on the market with a forged housing. This provides several key benefits:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Strength-to-Weight Ratio:\u003c\/strong\u003e The stronger forged housing allows Cusco to maximize performance while minimizing drivetrain losses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Oil Flow:\u003c\/strong\u003e The generous \"windowing\" on the housing allows significantly more oil to interface with the clutch plates than any other LSD on the market\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmoother Engagement:\u003c\/strong\u003e Increased oil flow enables smoother engagements and better control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter Temperature Management:\u003c\/strong\u003e Proper lubrication keeps differential temperatures in check, ensuring clutch plates stay saturated with oil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOur Testing \u0026amp; Development Process\u003c\/h3\u003e\n\u003cp\u003eFine-tuning LSDs is time-consuming work - the differential must be pulled from the car and opened up before making any adjustments. For this reason, we're taking it upon ourselves to go through this process and collect data on optimal settings.\u003c\/p\u003e\n\u003cp\u003eWith our extensive testing and Cusco's vast knowledge, we're excited to bring more S30z-specific performance parts to the market.\u003c\/p\u003e\n\u003ch3\u003eThe ZSM Philosophy\u003c\/h3\u003e\n\u003cp\u003eIt's not the parts list that makes the car - it's the way it's tuned, whether for street or race. A carefully tuned car will always be more enjoyable to drive and achieve higher performance levels.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: Contact us to discuss your build and get a quote. Lead times vary based on complexity and build\u003c\/em\u003e\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59140713349201,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/IMG-20260225-WA0077.jpg?v=1783671758"},{"product_id":"r200-r180-cusco-lsd-zsm-tuned-japan-import","title":"R200 \/ R180 Cusco LSD — ZSM Tuned (Japan Import)","description":"\u003cp\u003eMost LSDs don’t come tuned for your specific chassis out of the box. Chassis weight, horsepower, and tire compound all have a direct impact on the optimal LSD setting — and without that tuning, you’re leaving performance on the table. This is the ZSM-tuned Cusco clutch-type LSD for the S30Z, built in collaboration with \u003cstrong\u003eCusco USA\u003c\/strong\u003e to create specific ZSM settings for both R200 and R180 differentials on the S30Z chassis.\u003c\/p\u003e\u003ch3\u003eWhy Cusco\u003c\/h3\u003e\u003cp\u003eCusco LSDs are the only differential on the market with a \u003cstrong\u003eforged housing\u003c\/strong\u003e. The stronger forged construction allows Cusco to optimize the strength-to-weight ratio, improving performance and reducing drivetrain losses. But the most important detail is the generous \u003cstrong\u003ewindowing\u003c\/strong\u003e on the housing itself — this allows significantly more oil to interface with the clutch plates than any other LSD on the market.\u003c\/p\u003e\u003cp\u003eThe increased oil flow delivers smoother engagements, better modulation, and more controlled differential temperatures. Keeping the clutch plates properly saturated with oil is critical for consistent, repeatable performance — on the street and on track.\u003c\/p\u003e\u003cp\u003eCusco, being a true racing-driven company, has engineered many adjustment points into their LSDs. That adjustability is what makes ZSM tuning possible.\u003c\/p\u003e\u003ch3\u003eZSM Tuning Process\u003c\/h3\u003e\u003cp\u003eFine-tuning an LSD is time-consuming. Every adjustment requires pulling the diff from the car and opening it up before changes can be made. ZSM is taking on that process — collecting data, testing on the S30Z chassis, and working with Cusco’s vast knowledge base to develop optimal settings for street and track use.\u003c\/p\u003e\u003cp\u003eIt’s not the parts list that makes the car — it’s the way it’s tuned. A carefully tuned car will always be more fun to drive and achieve higher performance levels.\u003c\/p\u003e\u003ch3\u003eBuild Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCusco clutch-type LSD — forged housing with generous oil windowing\u003c\/li\u003e\n\u003cli\u003eZSM-tuned settings specific to the S30Z chassis\u003c\/li\u003e\n\u003cli\u003eBuilt with all new OEM bearings and seals\u003c\/li\u003e\n\u003cli\u003eCompatible with R200 and R180 differentials\u003c\/li\u003e\n\u003cli\u003eSourced and tuned in collaboration with Cusco USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReal Builds\u003c\/h3\u003e\u003cp\u003eThis differential was built for \u003cstrong\u003eJBZ Classics\u003c\/strong\u003e. ZSM will be building an R200 for Jason Scheier and Nightawls very soon. Looking forward to the feedback and continuing to refine the ZSM S30Z LSD settings with each build.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNissan \/ Datsun S30Z (240Z, 260Z, 280Z)\u003c\/li\u003e\n\u003cli\u003eR200 and R180 differential housings\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eInterested in a ZSM-tuned Cusco LSD for your S30Z? Contact ZSM Custom.\u003c\/em\u003e\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59723553341521,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/Servive_-_R180__R200_Kusco_LSD_rebuild__installation_service_1_8a824436-4779-42c3-acd3-471f0fbe05d3.jpg?v=1782862228"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/collections\/image_f4b15e5a-7466-4855-8b2a-55186193b5c2.png?v=1772593679","url":"https:\/\/zsmcustom.com\/collections\/services.oembed","provider":"ZSM Custom","version":"1.0","type":"link"}