Vortex 177ZB-48 520 Rear Sprocket 48-Tooth Black Aluminum

The Vortex 177ZB-48 is a 520-pitch, 48-tooth aluminum rear sprocket finished in black anodize, engineered for riders who demand lightweight performance and precise power delivery. CNC-machined from aerospace-grade 7075-T6 aluminum, this sprocket delivers a significant weight reduction over stock steel units while maintaining exceptional strength and durability.

Key Features:

• 520 Chain Pitch – Designed for 520-series chains for optimal power transfer
• 48 Teeth – Ideal for tuning acceleration and low-end torque
• 7075-T6 Aluminum Construction – High-strength alloy that is significantly lighter than steel while resisting wear
• Black Anodized Finish – Applied before CNC machining for a durable two-tone appearance that resists corrosion and oxidation
• CNC Machined to Tight Tolerances – Ensures perfect concentricity for smooth, vibration-free operation and extended chain life
• Self-Cleaning Tooth Profile – Unique tooth geometry with mud-clearing grooves reduces debris buildup and prolongs sprocket life
• Lightening Holes – Strategic cutouts reduce rotating mass for improved throttle response and acceleration

The Vortex 177ZB-48 rear sprocket is a direct bolt-on upgrade over worn OEM gearing, allowing riders to fine-tune their drive ratio for improved low-end pull and quicker acceleration. Compatible with 520-pitch chains, this sprocket is built to the same standards trusted by professional racing teams worldwide.