How to Choose a Chainring Guard
1: Count the maximum number of teeth on the chainring.
2: Check the number of screw holes on the chainring and the spacing between adjacent holes.
3: Once you've determined your number, choose a guard. The last digit after the specification:
40/42/44/46/48/52 refers to the number of teeth. Then, choose a guard with the same hole spacing.


The chainring guard prevents your trouser legs from getting caught in the chainring gears while riding, providing protection from damage and oil. Available in a variety of sizes and styles, it's primarily suitable for mountain bikes, buses, and folding bikes, and is made entirely of plastic.
Friendly reminder: Before purchasing a chainring guard, please accurately measure the center size of the adjacent holes, count the number of chainring teeth, and purchase according to your own measurements. Inaccurate measurements will prevent installation!
Purchasing criteria: Measure the distance between the centers of two adjacent chainring holes, count the number of teeth on the chainring, and purchase the corresponding chainring cover model (the model number on the cover represents the number of teeth on the chainring).
Common chainring tooth sizes are:
42-tooth, 4-hole center size: 10cm
42-tooth, 4-hole center size: 10.5cm
44-tooth, 4-hole center size: 10.5cm
44-tooth, 4-hole center size: 11cm
48-tooth, 4-hole center size: 12cm
48-tooth, 5-hole center size: 10cm
48-tooth, 5-hole center size: 9.5cm
50-tooth, 5-hole center size: 10.5cm
How to install the chainring guard
1: Prepare a screwdriver and screws, aligning the chainring retainer screw holes with the chainring screws.
2: Just tighten the screws and you're done!
















