{"product_id":"rlv-black-diamond-73t-219-axle-sprocket-7075-t6-aluminum-kart-racing","title":"RLV Black Diamond 73T #219 Axle Sprocket - 7075-T6 Aluminum - Kart Racing","description":"\u003cp\u003eWhen you are tuning a \u003cstrong\u003eracing go kart\u003c\/strong\u003e, the precision of your drive-line dictates your exit speed and overall lap times. The RLV Black Diamond 73T #219 Sprocket is engineered from aerospace-grade 7075-T6 aluminum to deliver maximum power transfer without the parasitic weight of standard steel gears. Designed specifically for high-torque applications, this sprocket ensures your chain stays planted, reducing friction and preventing catastrophic derailments during aggressive cornering. Whether you are dialing in the gear ratio for a tight sprint track or a sweeping road course, this 73-tooth profile offers the exact mechanical advantage needed to keep your RPMs in the optimal powerband.\u003c\/p\u003e\u003ch2\u003eSeamless Integration with Comet Parts and High-Output Engines\u003c\/h2\u003e\u003cp\u003eA high-performance sprocket is only as good as the system it supports. If you have recently invested in a high-revving \u003cstrong\u003ego kart engine for sale\u003c\/strong\u003e or upgraded your fuel delivery with a precision \u003cstrong\u003ecarburetor kit\u003c\/strong\u003e, the Black Diamond sprocket ensures that newfound horsepower actually reaches the tarmac. It pairs flawlessly with premium #219 chains and standard \u003cstrong\u003ecomet parts\u003c\/strong\u003e, creating a cohesive, low-drag drivetrain. Racers know that every ounce of rotating mass matters; by utilizing a lightweight, one-piece anodized design, RLV has created a sprocket that significantly reduces rotational inertia, allowing for lightning-fast acceleration out of the apex.\u003c\/p\u003e\u003ch2\u003eEngineered for Podium-Chasing Durability\u003c\/h2\u003e\u003cp\u003eDurability on the track translates directly to confidence behind the wheel. You wouldn't compromise on a \u003cstrong\u003ego kart steering wheel upgrade\u003c\/strong\u003e for tactile feedback, and you shouldn't compromise on the component responsible for putting your power to the ground. The Black Diamond series features an optimized tooth profile and a specialized black anodized finish that increases service life by up to 25% compared to standard aluminum sprockets. This means less time tensioning chains in the pits and more time laying down consistent, blistering laps.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace-Grade 7075-T6 Aluminum:\u003c\/strong\u003e Provides exceptional tensile strength while dramatically reducing rotating mass for faster acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized 73-Tooth Profile:\u003c\/strong\u003e Precision-machined to grip #219 chains tightly, minimizing slippage and eliminating power loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Black Anodized Finish:\u003c\/strong\u003e Hardened surface treatment reduces friction and extends the sprocket's lifespan by up to 25%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Vibration One-Piece Design:\u003c\/strong\u003e Ensures concentricity and true running, promoting consistent power delivery at high RPMs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGun-Drilled Weight Reduction:\u003c\/strong\u003e Strategically placed relief holes shed unnecessary grams without sacrificing structural integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal #219 Compatibility:\u003c\/strong\u003e Integrates seamlessly with top-tier racing chains, clutches, and standard drive-line components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaser-Etched Sizing:\u003c\/strong\u003e Clear, permanent 73T markings allow for rapid gear ratio changes in the hot pits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a 7075-T6 aluminum sprocket over a steel one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 7075-T6 aluminum construction significantly reduces rotating mass compared to steel. This lower rotational inertia allows your engine to rev up faster, resulting in quicker acceleration out of corners and improved overall lap times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the 73-tooth count affect my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 73T sprocket provides a specific gear ratio that balances acceleration and top speed. A larger sprocket generally increases torque for better punch out of tight corners, while a smaller sprocket would favor higher top-end speeds on longer straights.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this sprocket compatible with all kart chains?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This sprocket is specifically engineered for #219 pitch chains. It is not compatible with #35 pitch chains. Ensure your clutch and chain are both #219 spec for proper fitment and safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I maintain the Black Diamond finish?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The black anodized finish is designed for durability and reduced friction. To extend its life, keep the sprocket clean of track debris and ensure your chain is properly tensioned and lubricated. Avoid using harsh chemicals that could strip the anodizing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this sprocket for both sprint and road course racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the RLV Black Diamond series is versatile. However, you should adjust your gear ratio based on the track layout. The 73T is an excellent middle-ground choice for many sprint tracks, but always check your RPM data to ensure you are staying within your engine's optimal powerband.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chx0524-xtreme-219-high-performance-chain-114-link-chx0524\"\u003eRLV Xtreme #219 Gold-on-Gold High-Performance Chain 114 Links\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/premium-219-chain-breaker-rlv0760\"\u003ePremium RLV #219 Chain Breaker for Heavy-Duty Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm21976-black-diamond-76t-219-sprocket-bm21976\"\u003eRLV Black Diamond 76T #219 One-Piece Sprocket - 7075-T6 Aluminum - LO206 \/ Yamaha\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm21974-black-diamond-74t-219-sprocket-bm21974\"\u003eDurable Black Diamond 74T #219 Sprocket for Optimal Kart Acceleration\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm21972-black-diamond-72t-219-sprocket-bm21972\"\u003eUltimate Black Diamond 72-Tooth #219 Sprocket for Kart Mastery\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SwiftKarting","offers":[{"title":"Default Title","offer_id":52378552009023,"sku":"BM21973","price":43.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6843\/4239\/files\/rlv219blackdiamondonepiecesprockets-bm21973-black-diamond-73t-219-sprocket-bm21973.jpg?v=1773221528","url":"https:\/\/metro-merch-3.myshopify.com\/products\/rlv-black-diamond-73t-219-axle-sprocket-7075-t6-aluminum-kart-racing","provider":"Metro Merch","version":"1.0","type":"link"}