Ideal for small wheeler upgrade aiming for some speedy rides.
For Brompton Birdy or any folders or bikes with BCD110 or 130 Chainring spec.
Also Compatible with Schlumpf Speed drive, High Speed drive or Mountain drive (if you can handle it).
We also have BCD 130/110 Chainring converter in other listing.
Strong Material Aluminum 7075 for maximun durability.