Vortex 825ZK-47 Aluminum Rear Sprocket Pitch Marvic Galespeed Sprockets - CAT5 47T 530

The Vortex 825ZK-47 is a CAT5 Series aluminum rear sprocket engineered for motorcycles equipped with Marvic or Galespeed aftermarket wheels. Running a 530 pitch chain and 47 teeth, this sprocket delivers the precision fitment and performance that racing champions demand.

Vortex's CAT5 design—first introduced in 1995 and widely regarded as the industry's most iconic sprocket—is 100% CNC manufactured in the USA from specially formulated 7075 aluminum alloy. The sprocket is anodized in black before being precision machined to reveal striking contrasting silver highlights, combining race-ready aesthetics with superior corrosion resistance.

Key Features:

• 47-tooth, 530 pitch rear sprocket for Marvic and Galespeed aftermarket wheels
• Lightweight CAT5 aluminum construction reduces rotating mass for improved power transfer
• 100% CNC manufactured in the USA from specially formulated aluminum alloy
• Black anodized finish with contrasting silver machined accents
• Vortex patented unique tooth design for increased sprocket longevity
• Tight manufacturing tolerances for precise fitment and concentricity

The 825ZK-47 is the trusted choice for racers running high-end aftermarket wheels who demand uncompromising quality and performance from their drivetrain components.