The Wolf Tooth LoneWolf Aero Chainguide, for the Cervelo Aspero-5 GRX RX825 Di2 (1x) is the perfect match for the Aspero-5 equipped with a 1x drivetrain. Engineered for precision and developed with input from WorldTour pros, this chainguide eliminates dropped chains when it matters most, on rugged gravel descents, muddy race courses, and fast-paced road segments. Built with input from Team Jumbo-Visma and proven on the world&';s biggest stages, including victories at the Giro d&';Italia, Tour de France, and Vuelta a Espana, the LoneWolf delivers pro-level reliability in a sleek, aerodynamic package. Whether you&';re racing Unbound Gravel or chasing a PR on your local loop, this guide is 30 grams of pure drivetrain insurance. Why Add a Chainguide?A dropped chain in a race or mid-ride can cost you time, confidence, or even a podium. The LoneWolf Aero Chainguide gives you peace of mind, so you can focus on riding, not your drivetrain. Key Features: Precise Fit for Cervelo Frames: Compatible with Cervelo bikes (including the Aspero-5) featuring a braze-on mount Adjustable Chainline: GuideLock system allows 8mm of lateral adjustment for perfect chain alignment Chainring Size Options: Interchangeable base sweep configurations cover 38T to 62T chainrings (round or oval) Trusted at the Highest Level: Proven by Team Jumbo-Visma in the toughest road and gravel races on the planet