Vortex 225ZK-48 CAT5 Aluminum Rear Sprocket 520 48T Black

The Vortex 225ZK-48 is a CAT5 series aluminum rear sprocket featuring a 520 pitch and 48-tooth count in a black anodized finish. Introduced in 1995, the CAT5 design has become the most iconic sprocket in the industry, trusted by racers and performance riders worldwide.

Key Features:

• 100% CNC machined in the U.S.A. from specially formulated 7075 aluminum alloy per Vortex specifications
• Anodized first, then CNC machined — producing the signature two-tone look with a black body and contrasting silver-machined highlights on the teeth and sweeps
• Unique saber-tooth groove design increases sprocket longevity and reduces chain wear
• Lightweight construction reduces rotational mass for improved throttle response and rear-wheel power output
• Black anodized finish provides corrosion and oxidation resistance
• 520 pitch — 48 teeth
• Vortex patented sprocket design unlike any other on the market

The CAT5 rear sprocket is the preferred choice for street riders and track day enthusiasts looking to upgrade over a heavy OEM steel sprocket. The premium 7075 aluminum construction keeps weight to a minimum while the hardened tooth profile ensures long service life when properly maintained.