{"product_id":"rnc-legend-ultra-lite-top-load-stem-ti-bolts-stock","title":"RNC Legend Ultra-Lite Top Load Stem *Ti Bolts Stock*","description":"\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0279\/5778\/8808\/files\/RNCBMXLogo_480x480.png?v=1691036950\" width=\"196\" height=\"42\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe RNC BMX Legend Top Load Stem represents the next evolution in lightweight, high-performance BMX stem technology.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePrecision CNC machined from premium \u003cstrong\u003e7050-T7451 aerospace-grade aluminum\u003c\/strong\u003e, the Legend was engineered to deliver an exceptional combination of \u003cstrong\u003estrength, stiffness, fracture toughness, and minimal weight\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThrough advanced CAD design and extensive 3D CNC machining, unnecessary material has been eliminated while maintaining strength in critical areas. The result is an incredibly lightweight top load stem weighing just Weight: 40mm - 145 grams \/ 5.1oz 48mm - 149 grams \/ 5.3oz \u003c\/p\u003e\n\u003ch3\u003ePREMIUM 7050-T7451 AEROSPACE ALUMINUM:\u003c\/h3\u003e\n\u003cp\u003eUnlike conventional BMX stems manufactured from 6061 or 7075 aluminum, the Legend is machined from \u003cstrong\u003e7050-T7451\u003c\/strong\u003e, a premium aerospace alloy selected for its exceptional combination of mechanical properties.\u003c\/p\u003e\n\u003cp\u003eWith an ultimate tensile strength of approximately \u003cstrong\u003e76,000 PSI\u003c\/strong\u003e, 7050-T7451 delivers an outstanding combination of high strength and fracture toughness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy 7050-T7451?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Strength to 6061 Aluminum\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e7050-T7451 offers significantly higher tensile and yield strength than conventional 6061-T6\/T651 aluminum. This allows us to engineer a lightweight stem while maintaining excellent resistance to permanent deformation under demanding riding loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExceptional Fracture Toughness Compared to 7075\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile 7075-T6\/T651 aluminum is known for its high tensile strength, 7050-T7451 offers a major advantage in fracture toughness.\u003c\/p\u003e\n\u003cp\u003eFracture toughness measures a material's ability to resist the growth of an existing crack. The higher fracture toughness of 7050-T7451 helps improve resistance to crack propagation under extreme loading conditions.\u003c\/p\u003e\n\u003cp\u003eThis is especially valuable in highly stressed components such as BMX stems, which experience repeated impacts, vibration, and heavy loading.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngineered for Strength, Not Just Weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRather than simply choosing the aluminum alloy with the highest advertised tensile strength, we selected 7050-T7451 for its balance of strength, fracture toughness, and durability-related properties.\u003c\/p\u003e\n\u003cp\u003eThe result is a premium material ideally suited to our aggressively weight-optimized top load stem design.\u003c\/p\u003e\n\u003ch3\u003eADVANCED 3D CNC MACHINING:\u003c\/h3\u003e\n\u003cp\u003eThe Legend Top Load Stem is extensively \u003cstrong\u003e3D CNC machined\u003c\/strong\u003e to remove unnecessary material while preserving critical structural areas.\u003c\/p\u003e\n\u003cp\u003eEvery contour and pocket has been carefully engineered to maximize strength-to-weight efficiency.\u003c\/p\u003e\n\u003cp\u003eAt just \u003cstrong\u003e149 grams\u003c\/strong\u003e, the Legend delivers an exceptionally lightweight top load design without relying on conventional 6061 aluminum.\u003c\/p\u003e\n\u003ch3\u003eHEAT-TREATED TITANIUM BOLTS:\u003c\/h3\u003e\n\u003cp\u003eThe Legend includes premium CNC-machined \u003cstrong\u003eUSA-produced medical implant-grade 6Al-4V titanium bolts\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThese bolts are heat treated and aged to approximately \u003cstrong\u003e170,000 PSI tensile strength\u003c\/strong\u003e, providing exceptional strength while minimizing weight.\u003c\/p\u003e\n\u003ch3\u003eSPECS:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e RNC BMX Legend Top Load Stem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aerospace-grade 7050-T7451 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum Tensile Strength:\u003c\/strong\u003e Approximately 76,000 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Precision 3D CNC machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolts:\u003c\/strong\u003e USA-produced implant-grade 6Al-4V titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Tensile Strength:\u003c\/strong\u003e Approximately 170,000 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach:\u003c\/strong\u003e 40mm, 48mm \u0026amp; 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