Made in house and lasts better than the original, with the correct heat treatment and super finished to avoid putting dirt in your gearbox

It is always best to run new gears against new gears or premature damage can occur. 

This gear has two part numbers.  57-3876 and 41-3064

BSA Unit single Sliding gear 21t 57-3876 41-3064 Mainshaft PES

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