{"product_id":"jt-45t-steel-rear-sprocket-jtr269-45-c49-high-carbon-heat-treated-hand-finished","title":"JT 45T Steel Rear Sprocket JTR269.45 — C49 High Carbon, Heat-Treated \u0026 Hand-Finished","description":"\u003cstrong\u003eJT Sprockets JTR269.45 is a 45-tooth steel rear sprocket engineered from C49 high carbon steel, heat-treated and hand-finished for long-lasting, reliable power transfer.\u003c\/strong\u003e\n\n\u003cp\u003eBuilt to meet the demanding needs of powersports riders, the JTR269.45 rear sprocket combines robust material choice with precise machining. JT uses C49 high carbon steel for strength and wear resistance, then heat treats and hand-finishes each unit. Every sprocket passes a series of ten quality-control checks to ensure fit, concentricity, and tooth profile accuracy before it ships.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this sprocket improve drivetrain durability?\u003c\/h3\u003e\n\u003cp\u003eThe JTR269.45 uses a high carbon C49 steel alloy that offers superior tensile strength compared with softer steels. Heat treatment hardens the tooth surfaces to resist wear, while the hand finishing process polishes contact areas to reduce abrasive friction. Together these steps extend service life and maintain consistent chain engagement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eC49 high carbon steel for enhanced strength and fatigue resistance\u003c\/li\u003e\n  \u003cli\u003eHeat-treated teeth to resist accelerated wear\u003c\/li\u003e\n  \u003cli\u003eHand-finished contact surfaces for smoother chain engagement\u003c\/li\u003e\n  \u003cli\u003eTen quality checks for dimensional accuracy and concentricity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill the JTR269.45 fit my bike and how accurate is the machining?\u003c\/h3\u003e\n\u003cp\u003eJT machines each sprocket to tight tolerances to ensure correct bolt pattern, center hole, and tooth profile dimensions. The JTR269.45 is a 45-tooth rear sprocket; confirm your bike's bolt pattern and chain size before ordering. Accurate machining minimizes vibration and uneven wear when properly installed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecise bolt-hole locations for secure mounting\u003c\/li\u003e\n  \u003cli\u003eTrue center hole to maintain alignment with the hub\u003c\/li\u003e\n  \u003cli\u003eConsistent tooth profile for predictable chain tracking\u003c\/li\u003e\n  \u003cli\u003eFinal QC checks verify fit and finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does maintenance and performance benefit from this steel sprocket?\u003c\/h3\u003e\n\u003cp\u003eSteel sprockets like the JTR269.45 tolerate impact and heat better than many softer alloys, making them a practical choice for street and off-road use. With proper lubrication and routine chain maintenance, the heat-treated steel holds shape and tooth geometry longer, requiring fewer replacements over time. The hand-finished surface also reduces initial break-in wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeat treatment preserves tooth geometry under load\u003c\/li\u003e\n  \u003cli\u003eHand finish reduces early abrasive wear during break-in\u003c\/li\u003e\n  \u003cli\u003eDurable material lowers replacement frequency with correct care\u003c\/li\u003e\n  \u003cli\u003eWorks well with standard lubricants and routine chain adjustments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat quality controls and manufacturing steps ensure reliability?\u003c\/h3\u003e\n\u003cp\u003eJT Sprockets follows a multi-step production flow: selection of C49 steel, CNC machining to specification, heat treatment, hand finishing, and a comprehensive QC routine. Each sprocket undergoes ten separate inspections covering dimensions, surface integrity, and concentricity. This layered process reduces the risk of premature failure caused by manufacturing defects.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial verification for C49 high carbon steel\u003c\/li\u003e\n  \u003cli\u003eCNC machining to tight tolerances\u003c\/li\u003e\n  \u003cli\u003eControlled heat treatment for consistent hardness\u003c\/li\u003e\n  \u003cli\u003eTen-point quality inspection before shipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The JT Sprockets JTR269.45 45T steel rear sprocket is aimed at riders who prioritize durability and consistent drivetrain performance—commuters, weekend trail riders, and anyone replacing a worn sprocket with a robust, serviceable steel option. If you need a reliable replacement that balances wear resistance and cost-effectiveness while matching OEM mounting patterns, this JT sprocket is a practical choice.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What material is the JTR269.45 sprocket made from?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It's manufactured from C49 high carbon steel, then heat treated and hand finished for improved wear resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the JTR269.45 include quality checks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — each sprocket goes through ten quality-control inspections for dimensions and finish before shipping.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JT","offers":[{"title":"Default Title","offer_id":48084762460318,"sku":"B0068O5W3M","price":39.77,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/jt-jtr269-45-front-view.jpg?v=1785862183","url":"https:\/\/northtrailauto.ca\/products\/jt-45t-steel-rear-sprocket-jtr269-45-c49-high-carbon-heat-treated-hand-finished","provider":"North Trail Auto","version":"1.0","type":"link"}