Vortex 314ZK-51 Black 51-Tooth 428-Pitch Aluminum Rear Sprocket

The Vortex 314ZK-51 is a 51-tooth, 428-pitch black anodized aluminum rear sprocket precision-engineered for high-performance off-road and motocross applications. Machined from premium 7075-T6 aerospace-grade aluminum, this sprocket delivers a significant weight reduction over stock steel units, directly reducing rotating mass for improved throttle response and acceleration.

Key Features:

• 51 teeth, 428 chain pitch — engineered for precise gear ratio tuning
• 7075-T6 aerospace aluminum construction — exceptional strength-to-weight ratio
• Black hardcoat anodized finish (F8) — enhanced corrosion and wear resistance
• 100% CNC machined — ensures perfect concentricity and tight tolerances every time
• Vortex Ideal Tooth Design™ — optimized chain engagement for smooth hold and release, reducing friction and extending chain life
• Lightening holes and mud grooves — further reduce weight while helping keep the drivetrain clear of debris
• Manufactured in the USA to Vortex Racing's exacting quality standards

The 314ZK-51 is part of Vortex Racing's trusted lineup of performance sprockets, a brand long favored by professional and amateur racers alike. Whether fine-tuning gearing for a specific track layout or replacing a worn OEM sprocket with a superior aftermarket unit, this sprocket delivers the reliability and performance that Vortex is known for.