{"product_id":"zsm-s30z-front-lower-control-arms-oem","title":"ZSM S30Z Front Lower Control Arms (OEM+)","description":"\u003cp\u003eOEM control arms, upgraded the right way. These S30Z front lower control arms have been modified in-house by ZSM Custom using high-quality metric heim joints, complete with rubber boots to keep dirt and grime out. The goal: OEM+ — all the geometry, none of the flex.\u003c\/p\u003e\u003cp\u003eBuilt to stock length to preserve factory geometry, these arms eliminate the compliance of the aging OEM rubber bushing without changing track width or camber. The result is a more persistent alignment under lateral loads and braking — exactly what performance driving demands.\u003c\/p\u003e\u003ch3\u003eWhy Heim Joints?\u003c\/h3\u003e\u003cp\u003eAfter years of street, canyon, and track driving on OEM rubber bushings, we noticed significant flex once performance alignment settings and tension rods were dialed in. The bushing was working well past its original design intention — accelerating wear and introducing unwanted compliance. Solid rod ends eliminate that variable entirely.\u003c\/p\u003e\u003cp\u003eOn track at Willow Springs, the difference was immediate. The front end became noticeably more stable under braking, allowing for more effective threshold braking. That was a benefit we didn't fully anticipate — and it was significant.\u003c\/p\u003e\u003ch3\u003eA Note on NVH\u003c\/h3\u003e\u003cp\u003eWe understand the hesitation around rod ends and NVH. We shared it. But after experiencing a full spherical R35 build firsthand, we came to a clear conclusion: a quality damper and tire choice have a far greater effect on ride quality than the bushing type. It's about balance and intended use — and for performance-oriented S30Z builds, solid rod ends are the right tool.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModified OEM S30Z front lower control arms\u003c\/li\u003e\n\u003cli\u003eHigh-quality metric heim joints with rubber boots\u003c\/li\u003e\n\u003cli\u003eSet to factory length — no track width or camber change\u003c\/li\u003e\n\u003cli\u003eEliminates OEM rubber bushing flex for more consistent alignment\u003c\/li\u003e\n\u003cli\u003eImproved front-end stability under braking\u003c\/li\u003e\n\u003cli\u003eOEM+ philosophy: stock geometry, upgraded execution\u003c\/li\u003e\n\u003cli\u003eSold as a pair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eDatsun S30Z (240Z \/ 260Z \/ 280Z)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eIntended for performance and track use. OEM rubber bushings remain the recommended choice for a stock street S30Z.\u003c\/em\u003e\u003c\/p\u003e","brand":"ZSM Custom","offers":[{"title":"Default Title","offer_id":59781477990481,"sku":null,"price":295.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/0868\/4625\/files\/WhatsAppImage2026-07-09at10.37.34PM_2.jpg?v=1783664913","url":"https:\/\/zsmcustom.com\/products\/zsm-s30z-front-lower-control-arms-oem","provider":"ZSM Custom","version":"1.0","type":"link"}