{"product_id":"6-1g-grade-5-titanium-external-center-lock-lockring-44mm-16-notch-rotor-lockring-for-road-gravel-mtb","title":"6.1g Grade 5 Titanium External Center Lock Lockring | 44mm 16-Notch Rotor Lockring for Road, Gravel \u0026 MTB","description":"\u003ch1 data-section-id=\"mzm7mz\" data-start=\"1137\" data-end=\"1158\"\u003eProduct Description\u003c\/h1\u003e\n\u003ch2 data-section-id=\"x7ed8s\" data-start=\"1160\" data-end=\"1217\"\u003eS-PARTS Grade 5 Titanium External Center Lock Lockring\u003c\/h2\u003e\n\u003cp data-start=\"1219\" data-end=\"1439\"\u003eBuilt for riders who obsess over weight, detail, and durability, the S-PARTS Titanium External Center Lock Lockring is engineered for modern road, gravel, and mountain bikes using Shimano-style Center Lock rotor systems.\u003c\/p\u003e\n\u003cp data-start=\"1441\" data-end=\"1673\"\u003eMachined from premium Grade 5 Titanium (Ti-6Al-4V) and weighing only approximately 6.1 grams, this external spline lockring delivers exceptional strength-to-weight performance while adding a refined boutique finish to your wheelset.\u003c\/p\u003e\n\u003cp data-start=\"1675\" data-end=\"1854\"\u003eDesigned with a 44mm external 16-notch tool interface, it is compatible with standard bottom bracket tools such as the Park Tool BBT-9 and other equivalent 16-notch 44mm BB tools.\u003c\/p\u003e\n\u003ch1 data-section-id=\"nh62sj\" data-start=\"1861\" data-end=\"1885\"\u003eProduct Specifications\u003c\/h1\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"1887\" data-end=\"2362\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1887\" data-end=\"1916\"\u003e\n\u003ctr data-start=\"1887\" data-end=\"1916\"\u003e\n\u003cth data-start=\"1887\" data-end=\"1899\" data-col-size=\"sm\" class=\"last:pe-10\"\u003eAttribute\u003c\/th\u003e\n\u003cth data-start=\"1899\" data-end=\"1916\" data-col-size=\"md\" class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1927\" data-end=\"2362\"\u003e\n\u003ctr data-start=\"1927\" data-end=\"1946\"\u003e\n\u003ctd data-start=\"1927\" data-end=\"1935\" data-col-size=\"sm\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1935\" data-end=\"1946\"\u003eS-PARTS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1947\" data-end=\"1990\"\u003e\n\u003ctd data-start=\"1947\" data-end=\"1958\" data-col-size=\"sm\"\u003eMaterial\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"1958\" data-end=\"1990\"\u003eGrade 5 Titanium (Ti-6Al-4V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1991\" data-end=\"2040\"\u003e\n\u003ctd data-start=\"1991\" data-end=\"2007\" data-col-size=\"sm\"\u003eLockring Type\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2007\" data-end=\"2040\"\u003eExternal Center Lock Lockring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2041\" data-end=\"2088\"\u003e\n\u003ctd data-start=\"2041\" data-end=\"2058\" data-col-size=\"sm\"\u003eTool Interface\u003c\/td\u003e\n\u003ctd data-start=\"2058\" data-end=\"2088\" data-col-size=\"md\"\u003eExternal Spline \/ 16-Notch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2089\" data-end=\"2125\"\u003e\n\u003ctd data-start=\"2089\" data-end=\"2112\" data-col-size=\"sm\"\u003eThread Specification\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2112\" data-end=\"2125\"\u003eM30 × 7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2126\" data-end=\"2151\"\u003e\n\u003ctd data-start=\"2126\" data-end=\"2143\" data-col-size=\"sm\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2143\" data-end=\"2151\"\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2152\" data-end=\"2177\"\u003e\n\u003ctd data-start=\"2152\" data-end=\"2169\" data-col-size=\"sm\"\u003eInner Diameter\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2169\" data-end=\"2177\"\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2178\" data-end=\"2208\"\u003e\n\u003ctd data-start=\"2178\" data-end=\"2187\" data-col-size=\"sm\"\u003eWeight\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2187\" data-end=\"2208\"\u003eApprox. 6.1g \/ pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2209\" data-end=\"2285\"\u003e\n\u003ctd data-start=\"2209\" data-end=\"2230\" data-col-size=\"sm\"\u003eTool Compatibility\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2230\" data-end=\"2285\"\u003ePark Tool BBT-9 or compatible 16-notch 44mm BB tool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2286\" data-end=\"2362\"\u003e\n\u003ctd data-start=\"2286\" data-end=\"2306\" data-col-size=\"sm\"\u003eHub Compatibility\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"2306\" data-end=\"2362\"\u003eShimano-style Center Lock road, gravel, and MTB hubs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch1 data-section-id=\"1xjulbl\" data-start=\"2369\" data-end=\"2387\"\u003eAvailable Colors\u003c\/h1\u003e\n\u003cul data-start=\"2389\" data-end=\"2563\"\u003e\n\u003cli data-section-id=\"1j442so\" data-start=\"2389\" data-end=\"2395\"\u003eGold\u003c\/li\u003e\n\u003cli data-section-id=\"16y13v3\" data-start=\"2396\" data-end=\"2403\"\u003eBlack\u003c\/li\u003e\n\u003cli data-section-id=\"1j420ty\" data-start=\"2404\" data-end=\"2410\"\u003eBlue\u003c\/li\u003e\n\u003cli data-section-id=\"170hor7\" data-start=\"2411\" data-end=\"2418\"\u003eGreen\u003c\/li\u003e\n\u003cli data-section-id=\"2yo8g6\" data-start=\"2419\" data-end=\"2427\"\u003ePurple\u003c\/li\u003e\n\u003cli data-section-id=\"auwr07\" data-start=\"2428\" data-end=\"2443\"\u003eCandy Rainbow\u003c\/li\u003e\n\u003cli data-section-id=\"174vlel\" data-start=\"2444\" data-end=\"2451\"\u003ePrism\u003c\/li\u003e\n\u003cli data-section-id=\"1qo78m6\" data-start=\"2452\" data-end=\"2466\"\u003eSplatter Pop\u003c\/li\u003e\n\u003cli data-section-id=\"14mkqj\" data-start=\"2467\" data-end=\"2482\"\u003eNeon Splatter\u003c\/li\u003e\n\u003cli data-section-id=\"1eexnfq\" data-start=\"2483\" data-end=\"2496\"\u003eRabbit Camo\u003c\/li\u003e\n\u003cli data-section-id=\"d71hmw\" data-start=\"2497\" data-end=\"2509\"\u003eGreat Wave\u003c\/li\u003e\n\u003cli data-section-id=\"qrves4\" data-start=\"2510\" data-end=\"2529\"\u003eJaguar Green-Gold\u003c\/li\u003e\n\u003cli data-section-id=\"1t56m56\" data-start=\"2530\" data-end=\"2541\"\u003eSnowstorm\u003c\/li\u003e\n\u003cli data-section-id=\"1ytrfjx\" data-start=\"2542\" data-end=\"2563\"\u003eTopographic Glacier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-section-id=\"1ub8lxp\" data-start=\"2570\" data-end=\"2596\"\u003ePremium Surface Finishes\u003c\/h1\u003e\n\u003ch2 data-section-id=\"7cm9mn\" data-start=\"2598\" data-end=\"2641\"\u003ePVD Vacuum Coating (Gold \/ Black \/ Blue)\u003c\/h2\u003e\n\u003cp data-start=\"2643\" data-end=\"2814\"\u003eThe Gold, Black, and Blue versions feature advanced PVD vacuum nitride coating technology, creating a dense metallic nitride layer bonded directly to the titanium surface.\u003c\/p\u003e\n\u003cp data-start=\"2816\" data-end=\"3029\"\u003eThis process improves surface hardness, wear resistance, and anti-corrosion performance while maintaining deep, vivid color saturation that resists fading under rain, mud, washing, and long-term riding conditions.\u003c\/p\u003e\n\u003cp data-start=\"3031\" data-end=\"3164\"\u003eUnlike painted finishes, the coating integrates into the material surface itself for superior durability and long-lasting appearance.\u003c\/p\u003e\n\u003ch2 data-section-id=\"16e9in0\" data-start=\"3171\" data-end=\"3230\"\u003eAnodized Titanium Finish (Green \/ Purple \/ Candy Colors)\u003c\/h2\u003e\n\u003cp data-start=\"3232\" data-end=\"3330\"\u003eThe Green, Purple, Candy, and multi-color editions are created using precision titanium anodizing.\u003c\/p\u003e\n\u003cp data-start=\"3332\" data-end=\"3541\"\u003eRather than relying on paint or chemical dyes, different oxide film thicknesses alter light refraction on the titanium surface itself, producing naturally vibrant metallic colors unique to titanium components.\u003c\/p\u003e\n\u003cp data-start=\"3543\" data-end=\"3650\"\u003eThe result is a distinctive finish with enhanced corrosion resistance and a premium custom-built aesthetic.\u003c\/p\u003e\n\u003ch1 data-section-id=\"m14qbw\" data-start=\"3657\" data-end=\"3695\"\u003eAerospace-Grade Titanium Performance\u003c\/h1\u003e\n\u003cp data-start=\"3697\" data-end=\"3860\"\u003eS-PARTS uses carefully selected Grade 5 Titanium (Ti-6Al-4V) with average tensile strength exceeding 1050 MPa — significantly above standard industry requirements.\u003c\/p\u003e\n\u003cp data-start=\"3862\" data-end=\"3924\"\u003eCompared with conventional steel lockrings, titanium provides:\u003c\/p\u003e\n\u003cul data-start=\"3926\" data-end=\"4149\"\u003e\n\u003cli data-section-id=\"1n46wt6\" data-start=\"3926\" data-end=\"3967\"\u003eExtremely high strength-to-weight ratio\u003c\/li\u003e\n\u003cli data-section-id=\"ky5u83\" data-start=\"3968\" data-end=\"4007\"\u003eApproximately 40–50% weight reduction\u003c\/li\u003e\n\u003cli data-section-id=\"cjdluq\" data-start=\"4008\" data-end=\"4038\"\u003eExcellent fatigue resistance\u003c\/li\u003e\n\u003cli data-section-id=\"14y2rlh\" data-start=\"4039\" data-end=\"4079\"\u003eOutstanding anti-corrosion performance\u003c\/li\u003e\n\u003cli data-section-id=\"z1rj2t\" data-start=\"4080\" data-end=\"4149\"\u003eLong-term durability in wet, muddy, and coastal riding environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4151\" data-end=\"4297\"\u003eUnder comparable conditions, the overall mechanical performance is similar to high-grade 10.9 steel hardware while remaining dramatically lighter.\u003c\/p\u003e\n\u003ch1 data-section-id=\"mwojni\" data-start=\"4304\" data-end=\"4333\"\u003ePrecision CNC Manufacturing\u003c\/h1\u003e\n\u003cp data-start=\"4335\" data-end=\"4485\"\u003eEach lockring is precision CNC-machined with tight tolerance control to ensure smooth thread engagement, accurate fitment, and secure rotor retention.\u003c\/p\u003e\n\u003cp data-start=\"4487\" data-end=\"4675\"\u003eThe optimized external spline design provides reliable tool engagement during installation and removal, making it ideal for performance-oriented road, gravel, XC, trail, and enduro builds.\u003c\/p\u003e\n\u003ch1 data-section-id=\"1ohf1rv\" data-start=\"4682\" data-end=\"4720\"\u003eWhy Riders Choose Titanium Lockrings\u003c\/h1\u003e\n\u003cul data-start=\"4722\" data-end=\"4912\"\u003e\n\u003cli data-section-id=\"367tch\" data-start=\"4722\" data-end=\"4748\"\u003eReduce rotational weight\u003c\/li\u003e\n\u003cli data-section-id=\"126fmyy\" data-start=\"4749\" data-end=\"4778\"\u003eUpgrade wheelset aesthetics\u003c\/li\u003e\n\u003cli data-section-id=\"1m489nk\" data-start=\"4779\" data-end=\"4819\"\u003eImprove long-term corrosion resistance\u003c\/li\u003e\n\u003cli data-section-id=\"9pt0p4\" data-start=\"4820\" data-end=\"4859\"\u003ePerfect for custom lightweight builds\u003c\/li\u003e\n\u003cli data-section-id=\"2qj3or\" data-start=\"4860\" data-end=\"4912\"\u003eBoutique titanium finish for premium bike projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4914\" data-end=\"5002\"\u003eA small component that makes a noticeable difference in both appearance and performance.\u003c\/p\u003e\n\u003ch1 data-section-id=\"hg9dub\" data-start=\"5009\" data-end=\"5027\"\u003ePackage Includes\u003c\/h1\u003e\n\u003cul data-start=\"5029\" data-end=\"5089\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"af7g6f\" data-start=\"5029\" data-end=\"5089\" data-is-last-node=\"\"\u003e1 × S-PARTS Grade 5 Titanium External Center Lock Lockring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"759\" data-end=\"765\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1vqh6qc\" data-start=\"767\" data-end=\"824\"\u003eIs this an external or internal Center Lock lockring?\u003c\/h3\u003e\n\u003cp data-start=\"826\" data-end=\"927\"\u003eThis is an external spline Center Lock lockring designed for Shimano-style Center Lock rotor systems.\u003c\/p\u003e\n\u003cp data-start=\"929\" data-end=\"1047\"\u003eThe lockring uses a standard 16-notch 44mm external tool interface, compatible with tools such as the Park Tool BBT-9.\u003c\/p\u003e\n\u003cp data-start=\"1049\" data-end=\"1174\"\u003eIts 30mm inner diameter allows compatibility with larger thru-axle hub systems commonly found on modern gravel and MTB bikes.\u003c\/p\u003e","brand":"S-PARTS","offers":[{"title":"Gold","offer_id":45657086918847,"sku":"31520801","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Rainbow","offer_id":45657086951615,"sku":"31520802","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Titanium","offer_id":45657086984383,"sku":"31520803","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45657087017151,"sku":"31520804","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":45657087049919,"sku":"31520805","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Green","offer_id":45657087082687,"sku":"31520806","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Purple","offer_id":45657087115455,"sku":"31520807","price":54.32,"currency_code":"USD","in_stock":true},{"title":"Candy","offer_id":45657087148223,"sku":"31520809","price":59.1,"currency_code":"USD","in_stock":true},{"title":"Indigo","offer_id":45657617957055,"sku":"31520810","price":59.1,"currency_code":"USD","in_stock":true},{"title":"Prism","offer_id":45657088622783,"sku":"31520833","price":62.43,"currency_code":"USD","in_stock":true},{"title":"Splatter 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