Vortex 405ZK-57 CAT5 Aluminum Rear Sprocket 420 Pitch 57T Black

The Vortex 405ZK-57 CAT5 aluminum rear sprocket delivers lightweight, race-proven performance for motorcycle and ATV drivetrain applications. This 57-tooth sprocket features a 420 pitch chain pattern with a durable black anodized finish that provides both style and corrosion protection.

Premium Construction and Design:

• Machined from aerospace-grade 7075 T6 aluminum for exceptional strength-to-weight ratio
• 100% CNC manufactured in the USA to precise tolerances
• Specially formulated alloy per Vortex specifications
• Color anodized first, then CNC machined for silver highlights on tooth profiles
• Significantly lighter than steel sprockets while maintaining durability

Performance Features:

• Vortex patented tooth design increases sprocket longevity and reduces chain wear
• Saber tooth grooves optimize power transfer and reduce friction
• Mud grooves and special coating help keep dirt and debris away from the drivetrain
• Precision CNC machining ensures perfect fitment and smooth operation
• Reduced rotating mass improves throttle response and acceleration

CAT5 Series Benefits:

• Lightweight racing sprocket design trusted by champions
• Enhanced drivetrain efficiency with optimized tooth profile
• Extended component life compared to standard sprockets
• Black hardcoat anodized finish resists wear and corrosion

The CAT5 series represents Vortex's commitment to quality and performance, combining advanced manufacturing techniques with premium materials to create a sprocket that excels in both racing and street applications. The unique design features bright silver machine cuts that contrast beautifully with the black anodized base for a distinctive appearance.