Bike Crank Arm Set Aluminum Alloy Crank High Strength Mountain Bike Crankset with Bottom Bracket Kit

Feature: 1. [Aluminum Alloy Crank] The crank is forged from high strength aluminum alloy, with widened and thickened edges and corners, which are easy to be stressed without breaking. 2. [Shaft Chromium Molybdenum Steel] Shaft chromium molybdenum steel, the stability of crank and hollow shaft is improved. 3. [External Thread Bearing] External thread bearing center shaft, aluminum alloy outer frame improves rigidity, reduces noise, and is easy to maintain and lubricate. 4. [Stable and No Loosening] Exquisite thread, threaded pair lock, strengthen the stability of the lateral direction, will not loosen, and then there will be no abnormal noise. 5. [Applicability] Suitable for modification of mountain bikes, road bikes, and folding bikes, suitable for crank sprocket 130mm, applicable range of bottom bracket 68 73mm for bottom bracket, bottom bracket thread specification BC1.37 24T. Specification: Item Type: Hollow Integrated Crank Material: Main Aluminum Alloy, Shaft Chromium Molybdenum Steel, Bottom Bracket Tube PP Crank Size: Aperture Approx. 170mm 6.7in Crank Shaft Size: Length Approx. 116mm 4.6in, Outer Diameter Approx. 24mm 0.9in Crank Shaft Inner Diameter Thread Specification: M18 Thread Applicable Crank Crankset BCD: Approx. 130mm 5.1in Bottom Bracket Size: Total Length Approx. 91.5mm 3.6in, Inner Diameter Approx. 24mm 0.9in, Outer Diameter Approx. 44.6mm 1.7in Bottom Bracket Thread Specification: BC1.37in 24T Outer Diameter of Bottom Bracket Thread: Approx. 34mm Bottom Bracket Type: Threaded Scope of Application of the Bottom Bracket: Approx. 68 73mm Bottom Bracket, and the Inbuilt Sealed Bearing Rotates Smoothly. Package List: 1 x Right Foot Side Crank (with Shaft)1 x Left Foot Side Crank2 x Crank Hole Cover2 x Crank Fixing Screws5 x Short Screws5 x Nut2 x Bearing Bottom Bracket Lock1 x Bottom Bracket Sleeve3 x Bottom Bracket Washer