OEM compatible, OEM same etc. quality. Aluminum is certainly lighter and looks better, though. Steel is more durable. Considering this, the cosmetics market is dominated by this product.
good point OEM quality and performance.
High cost performance.
●Front, so replacement is easy.
I don't think that OEM is the best choice for everything, but for parts that require durability, such as Sprocket and Chain, I think OEM or OEM-alike parts are better. Manufacturers use those parts for their durability.