At DMG Motorsports, we present the Vortex CAT5 Rear Sprocket in 38T-525 Black (110ZK-38) — a purpose-built, race-proven upgrade engineered specifically for Ducati 749 and 999 models. This sprocket swaps out the heavy stock steel unit for a lightweight, aerospace-grade aluminum piece that sheds rotating mass, sharpens throttle response, and gives your Ducati a distinctly aggressive look. Vortex has built a reputation among racers and street riders alike for sprockets that combine head-turning style with genuine performance, and this CAT5 model is no exception.

Unlike sprockets that are painted or coated after machining, Vortex anodizes the CAT5 sprocket first and then CNC machines it, exposing sharp silver highlights against the black anodized finish for a true "trick" two-tone look that won't fade or peel like a simple coating. Machined from 7075 aluminum, it delivers the strength-to-weight ratio serious riders demand, while the unique tooth design improves chain engagement and extends service life. It's easy to see why this design is trusted by champions on the track and embraced by enthusiasts who want their Ducati to look and perform like a race bike.

Features:

• Anodized FIRST then CNC machined from 7075 aluminum for a durable, trick two-tone finish with silver highlights
• Lightweight aluminum construction reduces rotating mass compared to heavy OEM steel sprockets
• Unique tooth design engineered for smoother chain engagement and increased longevity
• 38-tooth, 525 pitch configuration finished in black
• Direct-fit application for 2003-2008 Ducati 749 and 999 models
• Proven CAT5 design trusted by champions in professional racing
• Vortex part number 110ZK-38 / SKU 3-110ZK38

Fitment