RLV Black Diamond 73T #219 Axle Sprocket - 7075-T6 Aluminum - Kart Racing

When you are tuning a racing go kart, 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.

Seamless Integration with Comet Parts and High-Output Engines

A high-performance sprocket is only as good as the system it supports. If you have recently invested in a high-revving go kart engine for sale or upgraded your fuel delivery with a precision carburetor kit, the Black Diamond sprocket ensures that newfound horsepower actually reaches the tarmac. It pairs flawlessly with premium #219 chains and standard comet parts, 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.

Engineered for Podium-Chasing Durability

Durability on the track translates directly to confidence behind the wheel. You wouldn't compromise on a go kart steering wheel upgrade 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.

• Aerospace-Grade 7075-T6 Aluminum: Provides exceptional tensile strength while dramatically reducing rotating mass for faster acceleration.
• Optimized 73-Tooth Profile: Precision-machined to grip #219 chains tightly, minimizing slippage and eliminating power loss.
• Advanced Black Anodized Finish: Hardened surface treatment reduces friction and extends the sprocket's lifespan by up to 25%.
• Low-Vibration One-Piece Design: Ensures concentricity and true running, promoting consistent power delivery at high RPMs.
• Gun-Drilled Weight Reduction: Strategically placed relief holes shed unnecessary grams without sacrificing structural integrity.
• Universal #219 Compatibility: Integrates seamlessly with top-tier racing chains, clutches, and standard drive-line components.
• Laser-Etched Sizing: Clear, permanent 73T markings allow for rapid gear ratio changes in the hot pits.

Frequently Asked Questions

Q: Why should I choose a 7075-T6 aluminum sprocket over a steel one?

A: 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.

Q: How does the 73-tooth count affect my kart's performance?

A: 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.

Q: Is this sprocket compatible with all kart chains?

A: 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.

Q: How do I maintain the Black Diamond finish?

A: 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.

Q: Can I use this sprocket for both sprint and road course racing?

A: 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.

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