Crank・Chain・Cog・BBCrank・Chain・Cog・BB
The drive unit can be called the heart of a bicycle.
No matter how good the frame is, whether or not you customize it will make a huge difference in ride comfort.
On the other hand, even if you don't have a high-end frame, you can transform it by customizing the drivetrain.
People with genuine cranks should think they've been fooled and try using it.
Do you know about gear ratios and skid points?
53 products
