Vortex 825ZK-38 CAT5 Rear Aluminum Sprocket 530 38T Black for Marvic/Galespeed Wheels

The Vortex 825ZK-38 is a CAT5 Series rear aluminum racing sprocket designed specifically for motorcycles equipped with Marvic and Galespeed aftermarket wheels. Featuring a 530 chain pitch and 38 teeth, this sprocket is precision-engineered for serious street and track riders who demand the best in drivetrain performance.

Vortex's CAT5 sprockets are crafted from a specially formulated aluminum alloy per Vortex's own exacting specifications, then 100% CNC machined in the USA for perfect tolerances every time. The black anodized finish delivers a striking appearance, with contrasting bright silver machine cuts on the sweeps, mud grooves, and teeth for a distinctive two-tone look.

Key Features:

• CAT5 lightweight aluminum racing sprocket — reduces rotating mass for improved acceleration and power transfer
• 530 chain pitch with 38 teeth
• Designed exclusively for Marvic and Galespeed aftermarket wheels — wheel-specific fitment
• Bolt circle: 100mm | Bolt hole diameter: 10.5mm | Number of bolt holes: 6 | Hub diameter: 80mm
• 100% CNC manufactured in the USA to precise tolerances
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio
• Saber tooth groove design — unique tooth profile engineered to increase sprocket longevity
• Vortex patented sprocket design for unmatched performance and durability
• Black anodized finish with contrasting silver machine-cut highlights

The Vortex 825ZK-38 is the go-to choice for racers and performance riders running premium aftermarket wheel packages. Its lightweight construction reduces drivetrain rotating mass, allowing more engine power to reach the pavement. MPN: 825ZK-38.