BETTER SYSTEM: Integrated system can protect the frame, giving more power output, better than ordinary structure bottom bracket.
TOP QUALITY: Square Taper Bottom Bracket is solid and durable with high quality material, which can use for a long time.
SUIT FOR: roundness tolerance can be absorbed by the steel shell of installing ports of Bracket Bottom, suitable for 80/100mm frame shell.
NOTICE: Please use the BB tool to install and replace the bottom bracket, because it will more safer for you.
GUARANTEE: If you are not satisfied with our product received, you can apply for unconditional return and refund within 180 days. In terms of any problem of this product, you can send emails as soon.