Vortex 313ZK-48 Aluminum Rear Sprocket 420 Pitch 48-Tooth Black

The Vortex 313ZK-48 is a lightweight, high-performance aluminum rear sprocket designed for 420 pitch drive chains. Featuring a 48-tooth configuration and a striking black anodized finish, this sprocket is an ideal upgrade over heavy stock steel sprockets for off-road and motocross riding.

Key Features:

• 420 Pitch Compatibility: Designed specifically for 420 pitch chains common in smaller-displacement off-road and motocross applications
• 7075 T6 Aerospace-Grade Aluminum: Offers an exceptional strength-to-weight ratio, reducing rotating mass for improved throttle response and faster acceleration
• 100% CNC Manufactured in the USA: Machined to precise tolerances for concentricity, consistent alignment, and reduced drivetrain wear
• Black Anodized Finish: Hard-coat anodizing provides corrosion resistance and a clean, aggressive appearance with contrasting machined accents
• Vortex Patented Tooth Design: Unique tooth profile minimizes drag and friction, extending both sprocket and chain life
• Lightening Holes: Strategic weight-reduction cutouts further decrease unsprung and rotating mass

The Vortex 313ZK-48 delivers the performance and durability that racers and serious off-road riders demand. The 48-tooth rear sprocket increases the final drive ratio for stronger low-end torque and quicker acceleration out of corners, making it a popular gearing choice for motocross and trail riding.