The Wolf Tooth LoneWolf Aero Blade Chainguide for Cervelo is a lightweight, dependable solution to prevent dropped chains on high-performance 1x setups. Designed specifically for Cervelo S5 and P5 models with a braze-on front derailleur mount, this chainguide replaces the mount entirely, delivering security and clean integration for serious racers. Whether you&';re lining up for a road race, gravel epic, or a CX showdown, the LoneWolf Aero Blade provides peace of mind with just 30 grams of weight. Think of it as insurance when you can&&';;t afford a mechanical. Trusted by Team Visma | Lease a Bike, this guide has been proven on the toughest courses in pro cycling. From the cobbles of Paris-Roubaix to Grand Tour podiums and Unbound Gravel&&';;s grueling terrain, the LoneWolf Aero Blade has kept chains in place where it matters most. Because it mounts in place of a front derailleur, the Aero Blade Chainguide is compatible only with 1x drivetrains. It works with both round and oval chainrings, ensuring optimal chain retention across road, gravel, and CX setups. Featuring three sweep base options, the LoneWolf Aero Blade covers chainrings from 38T to 68T. Its unique GuideLock quick-adjust system provides 8mm of chainline tuning, and the guide head should be set within 2mm of the chain for maximum effectiveness. This chainguide is purpose-built for speed, simplicity, and security; perfect for the Cervelo rider who demands flawless drivetrain performance, no matter the course. Key Features: Lightweight chain retention for Cervelo S5 and P5 aero bikes Mounts directly to braze-on front derailleur tab Compatible with 1x drivetrains (44-47.5mm chainline) Designed for round and oval chainrings Race-proven reliability at the highest levels