because it's anodised, since the Japanese Keirin are very strict, they don't even approved anodised item.
That's why the black Sugino 75s, although exactly the same quality as the plain Sug75s are NOT NJS. It's just one of the arcane NJS rules about equipment being certain colours.
That's why the black Sugino 75s, although exactly the same quality as the plain Sug75s are NOT NJS. It's just one of the arcane NJS rules about equipment being certain colours.