External BB Axle Integrated Triple-Chainring Crankset
|Take statistics of hardness, electrical conductivity and crystal as the standard to reinforce the strength on|
integrated forging 7050 crank arm and imported European aluminum 7075 100% CNC chain rings for
|With 6 points index shifting up design of the chain rings will provide faster, smoother and precisely shifting|
transfer ofyour bike and make you take the lead.