Main Drive "Reliable Replacement" freewheels are similar to Original Equipment on most new BMX, fixie, and other single speed bicycles.  2 pawls engaging simultaneously every 18°, acceptable for most casual cyclists.  Not recommended for motor conversions, jack shafts or high-torque use.

MD Freewheels thread onto standard 1.375"-24tpi hub threads (if you currently have a 16T or larger freewheel, it is most likely compatible).  Sprocket pitch is 1/2" x 1/8", compatible with 1/8" wide, single speed chains (3/32" wide chain will not fit).

MD Freewheels feature 4-notch removal, compatible with ACS and other Universal removal tools. 

Chrome Plated Made in China

SKU 21FW05MD18
Shipping Weight 0.2200kg
Shipping Width 0.090m
Shipping Height 0.090m
Shipping Length 0.010m

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