The reviewer briefly mentions the ZTTO MTB Bicycle Rear Derailleur Jockey Wheel Steel Bearing Pulley 11T 13T Purple CNC Road Bike Guide Roller Idler 4mm 5mm 6mm but does not provide detailed analysis.
AI-Summary
Pros
They mention that alloy derailleur pulley wheels are an easy, low-cost way to improve shifting and add durability.
Cons
No cons found in the analysis.
Key Points
They come with sealed bearings which reduce friction and help your drivetrain run smoother, especially in wet or dusty conditions.
They are compatible with most derailleurs and installation is straightforward.
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