Vortex 841ZK-49 Rear Sprocket 49-Tooth for Marchesini & PVM Aftermarket Wheels

The Vortex 841ZK-49 is a 49-tooth rear sprocket engineered specifically for motorcycles equipped with Marchesini and PVM aftermarket wheels. Featuring Vortex's patented sprocket design, this unit is 100% CNC-manufactured in the USA from a specially formulated aluminum alloy, delivering the strength and precision demanded by competitive riders and track-day enthusiasts alike.

Unlike standard OEM-bolt-pattern sprockets, the 841ZK uses a 5-bolt aftermarket bolt pattern with a 100mm bolt hole circle diameter, 10.5mm bolt hole diameter, and a 76mm hub diameter — the industry-standard interface for premium aftermarket wheel brands including Marchesini and PVM. This sprocket will not fit standard OEM wheels.

Key Features:

• 49-Tooth rear sprocket for tuned final drive gearing
• Lightweight CNC-machined aluminum construction reduces rotating mass
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight ratio
• Black anodized with machined accent finish to resist corrosion
• Vortex patented unique tooth design for extended sprocket longevity
• 5-bolt aftermarket bolt pattern — fits Marchesini and PVM wheels
• Bolt Hole Circle: 100mm | Bolt Hole Diameter: 10.5mm | Hub Diameter: 76mm
• 100% manufactured in the USA

The Vortex 841ZK-49 is the go-to choice for riders seeking a direct-fit performance rear sprocket for their premium aftermarket wheel setup, combining race-proven engineering with a finish that looks as good as it performs.