Mongoose Chainring Sprocket Guard / Crankset Cover — Compatible with M430, M590, M390 (44T) Key benefits - Protects the crank ring from impacts, debris, and wear while helping keep clothing clean from grease and dirt. - Lightweight, simple and classic design that preserves bike appearance without adding bulk. - Precisely matched screw length for safe installation; no screw modification required, reducing risk of incorrect fit or compromised shifting performance. Compatibility and dimensions - Compatible models: Mongoose M430, M590, M390. - Designed for 44T chain wheel. - Bolt-hole layout: diagonal hole distance 15.5 cm and adjacent hole distance 11 cm. - Requires a crank ring with 4 screw holes. Confirm these dimensions and bolt pattern before purchase. Function and performance - Serves as a chain guard and sprocket protector to reduce contact damage and help prevent clothing contamination from grease. - Lightweight construction maintains pedaling efficiency while providing durable protection. - Screws provided are sized for correct installation. Do not change screw length; altering screws can affect shifting and performance. Installation notes and precautions - Before installing, verify that your crankset matches the listed bolt-hole distances and has 4 screw holes. - Use the supplied screws as intended. If you are unsure about fitment, compare measurements to your current crankset or consult a mechanic. Practical use scenarios - Daily commute: Protects your chainring and keeps pant legs clean during rides to work or school. - Trail and recreational riding: Shields the chainring from rocks and debris on off-road routes. - Replacement or upgrade: Ideal when replacing a damaged guard on compatible Mongoose models or adding basic protection to a 44T crank wheel. What you get - A Mongoose chainring sprocket guard/crankset cover sized and drilled for the specified Mongoose models and 44T chain wheel. Ensure measurements and 4-bolt pattern match your crankset before ordering.