Aluminum Alloy Bike Crankset Set 130BCD 170mm Chainring Bicycle Crank 50/52/54/56/58T With Ultralight Hollow Design Compatible With 9/10/11 Speed Chains(black crank+58T)

• 【Ultralight】The crankset and chainring are made of materials for durability. With CNC machined AL6061 aluminum construction, they provide the perfect balance of lightweight design and strength.
• 【Wide Compatibility】The chainring is compatible with 9spd, 10spd, and 11spd chains, making it suitable for most bikes including folding bikes, road bikes, e-bikes, and more. It is a fully CNC machined narrow-wide chainring designed for a single ring setup.
• 【Precise Specifications】The crank features a 170mm arm length and a 130BCD (Bolt Circle Diameter). The spindle interface is a square hole. The weight of the crank is approximately 525g. The chainring is available in various sizes, including 50T, 52T, 54T, 56T, and 58T, with corresponding weights and diameters.
• 【 Construction】The chainring is made of CNC AL7075 aluminum alloy and features narrow and wide teeth for enhanced chain retention and single-speed performance. It is available in a sleek black color.
• 【Easy Installation】The package includes options for the crankset only or the crankset with the chainring and chainring screws. The crankset is easy to install, making it convenient for cyclists to upgrade or replace their current crankset.

Description： * and *Made of - materials, *CNC machined AL6061 aluminum offers the perfect blend of light weight and strength *The chainring is compatible with 9spd, 10spd, 11spd chain. *suit for most bikes,folding bikes，road bikes，ebikes，Fully CNC machined narrow-wide chainring for single ring Specification: *Crank Description: Material: AL6061 aluminum alloy Armlength: 170mm for BCD: 130mm Spindle Interface: Square Hole Weight: about 525g *Chainring description: Material: CNC AL7075 aluminum alloy Narrow and wide teeth chainring / single speed Color: Black for BCD: 130mm Teeth: 50T 52T 54T 56T 58T Weight: 85/88/92/98/103g Diameter: 208/216/224/231/242mm Compatible chain speed: 9/10/11 speed Package included: list1:1x crank list2:1x crank ,1x chainring，1set chainring screw