42T Chainring Guard Scratch Protection

This crankset protective cover is precisely sized for 42-tooth chainrings with a 4-hole mounting pattern and 3 mm hole diameter. It measures 9.7–10.7 cm (3.82–4.21 inches) in pitch and is made from durable, lightweight material designed for long-term use without adding drivetrain resistance. The guard features a hollow, brown finish with clean, minimalist geometry that follows the chainring’s contour. Installation uses only the included plastic screws — no tools required beyond basic hand tightening. It fits securely without modifying the crankset or affecting chain alignment, shifting performance, or pedalling efficiency.