Description
Key Features
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⚙ Bosch Gen 3 Compatible: Specifically made for e-bike cranks driven by Bosch Generation 3 systems, ensuring correct fit and performance.
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🔧 Size: 38 teeth on a 104 mm bolt circle diameter (BCD) — common for many Bosch e-bike cranksets.
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🛠 Bolt-On Design: Typically sold with the required spider, bolts, and nuts for installation on a 4-arm crank spider (on some listings), or as the direct chainring for assembly on a mini-ISIS axle crank.
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🏍 Material: Made from steel for strength and durability under e-bike torque loads.
What It Does
This chainring replaces a worn or damaged front sprocket on your Trek e-bike to help maintain efficient pedalling and proper chain engagement — crucial for smooth shifting and motor support.
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