{"product_id":"fox-mtb-titanium-thru-axle-air-spring-top-cap","title":"S-PARTS TC4 Titanium Front Thru Axle \u0026 Air Spring Top Cap for FOX MTB Fork","description":"\u003ch2\u003eS-PARTS Titanium Upgrade Parts for FOX MTB Forks\u003c\/h2\u003e\n\n\u003cp\u003e\nUpgrade your compatible FOX mountain bike suspension fork with S-PARTS precision-manufactured TC4 titanium hardware.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis collection includes a \u003cstrong\u003etitanium front thru axle\u003c\/strong\u003e and \u003cstrong\u003eair spring top cap\u003c\/strong\u003e for compatible FOX MTB suspension forks, providing a premium alternative for riders looking for lightweight, corrosion-resistant and highly detailed titanium components.\n\u003c\/p\u003e\n\n\u003ch2\u003eTC4 Titanium Front Thru Axle\u003c\/h2\u003e\n\n\u003cp\u003e\nThe S-PARTS titanium front thru axle is designed as a replacement upgrade for compatible FOX mountain bike suspension forks.\n\u003c\/p\u003e\n\n\u003cp\u003e\nManufactured from high-strength TC4 (Ti-6Al-4V) titanium alloy, it combines low weight, excellent corrosion resistance and high mechanical strength in a component that plays an important role in securing the front wheel to the fork.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTC4 (Ti-6Al-4V) titanium construction\u003c\/li\u003e\n  \u003cli\u003eHigh strength-to-weight ratio\u003c\/li\u003e\n  \u003cli\u003eExcellent corrosion resistance\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined threads and contact surfaces\u003c\/li\u003e\n  \u003cli\u003eMultiple premium titanium finishes available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTC4 Titanium Air Spring Top Cap\u003c\/h2\u003e\n\n\u003cp\u003e\nThe S-PARTS titanium air spring top cap is designed for the air spring side of compatible FOX MTB suspension forks.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPrecision CNC machining provides accurate dimensions and clean interfaces, while the titanium construction adds a distinctive premium detail to the fork.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPlease confirm that your exact FOX fork model and generation are compatible before ordering.\n\u003c\/p\u003e\n\n\u003ch2\u003ePremium TC4 Titanium Alloy\u003c\/h2\u003e\n\n\u003cp\u003e\nS-PARTS uses carefully selected S-grade TC4 (Ti-6Al-4V) titanium alloy for its premium titanium components.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe selected material has an average tensile strength exceeding 1050 MPa, providing an excellent combination of strength, low weight and corrosion resistance for high-performance bicycle hardware.\n\u003c\/p\u003e\n\n\u003ch2\u003ePrecision Forging \u0026amp; CNC Machining\u003c\/h2\u003e\n\n\u003cp\u003e\nSelected S-PARTS titanium components are produced using dedicated tooling and precision manufacturing processes.\n\u003c\/p\u003e\n\n\u003cp\u003e\nHot-forged components are formed using dedicated dies, followed by precision CNC machining of critical dimensions, threads and contact surfaces.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis manufacturing process helps provide accurate thread engagement, consistent fitment and a refined finish.\n\u003c\/p\u003e\n\n\u003ch2\u003ePVD \u0026amp; Anodized Titanium Finishes\u003c\/h2\u003e\n\n\u003cp\u003e\nS-PARTS titanium components are available in a variety of premium finishes.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDepending on the selected color, PVD or anodizing processes are used to create distinctive metallic finishes while maintaining the characteristic appearance of titanium.\n\u003c\/p\u003e\n\n\u003cp\u003e\nChoose from classic titanium tones or more distinctive colors to coordinate the fork hardware with the rest of your MTB build.\n\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e S-PARTS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e MTB Suspension Fork Upgrade Parts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Parts:\u003c\/strong\u003e Front Thru Axle \/ Air Spring Top Cap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Selected FOX MTB Suspension Forks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e TC4 Titanium Alloy (Ti-6Al-4V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Precision Forging \u0026amp; CNC Machining\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e PVD \/ Anodized, depending on selected color\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mountain Bike Suspension Fork\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility Notice\u003c\/h2\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eFOX suspension fork specifications can vary by model, generation and axle configuration.\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\nPlease select the option specifically listed for your fork. Do not assume compatibility based only on fork appearance or stanchion diameter.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIf you are unsure which version you need, please send us the exact FOX fork model, model year and a photo of the original component before ordering. We can help confirm compatibility.\n\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompare the S-PARTS component with the original FOX part before installation.\u003c\/li\u003e\n  \u003cli\u003eMake sure all threads and contact surfaces are clean and undamaged.\u003c\/li\u003e\n  \u003cli\u003eFollow the fork manufacturer's installation and torque specifications.\u003c\/li\u003e\n  \u003cli\u003eDo not overtighten titanium components.\u003c\/li\u003e\n  \u003cli\u003eFor thru axles, confirm complete thread engagement and secure front-wheel installation before riding.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if you are unfamiliar with suspension fork servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003e\nThe package includes the S-PARTS titanium component selected from the product options.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFOX suspension fork, 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