Vortex 245AZB-51 Blue 51-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 245AZB-51 is a 51-tooth, 520-pitch aluminum rear sprocket finished in a vibrant blue anodized coating. Engineered by Vortex Racing — a U.S.-based manufacturer dedicated exclusively to motorcycle racing components — this sprocket is built for riders who demand precision, durability, and weight savings on the street or track.

Key Features:

• 51-Tooth / 520-Pitch: Direct-fit rear sprocket with standard 520 chain pitch for broad compatibility
• 7075 T6 Billet Aluminum: Aerospace-grade alloy construction delivers an exceptional strength-to-weight ratio
• 100% CNC Machined: Precision machined to the tightest tolerances for consistent fit and performance
• Saber Tooth Groove Design: Vortex's patented tooth profile promotes smooth chain engagement and extends sprocket longevity
• Blue Anodized Finish: Hard anodized coating resists corrosion and adds a clean, race-inspired appearance
• Race-Proven: Tested with feedback from top professional race teams competing in Motocross, Supercross, Road Racing, and Flat Track

Vortex Racing sprockets are a popular upgrade for riders looking to reduce unsprung weight and fine-tune their gearing ratio. The 245AZB-51 is a direct bolt-on replacement designed for specific motorcycle applications using 520-pitch chain drive systems.