Vortex 313ZO-46 CAT5 Rear Sprocket Orange 46-Tooth 520 Pitch Aluminum

The Vortex 313ZO-46 is a 46-tooth, 520-pitch CAT5 aluminum rear sprocket in a striking orange anodized finish. Designed for riders who demand race-proven performance with a bold look, this sprocket is 100% CNC machined in the USA from a specially formulated aluminum alloy to deliver an exceptional balance of light weight and durability.

Vortex's iconic CAT5 sprocket design features a unique tooth profile engineered to maximize chain engagement and extend sprocket longevity. The orange anodized finish is applied before CNC machining, resulting in Vortex's signature two-tone appearance with vibrant orange flanks and bright silver-machined tooth faces.

Key Features:

• 46-tooth rear sprocket — increases low-end torque and acceleration compared to lower tooth-count sprockets
• 520 pitch — compatible with standard 520 drive chains
• Orange anodized CAT5 design — anodized prior to machining for a classic two-tone look
• 100% CNC manufactured in the USA from specially formulated aluminum alloy
• Vortex patented tooth design for increased sprocket longevity and optimal chain contact
• Silver hard-coat clear finish highlights on machined surfaces resist oxidation
• Fitment code 313 — fits specific OEM rear wheel bolt patterns (verify fitment for your application)

Vortex Racing sprockets are trusted by professional race teams worldwide and are the benchmark for performance-oriented street and track riders. Pairing this sprocket with a quality 520 chain completes an upgrade that can noticeably improve throttle response and drive feel.