Friendly Reminder Connecting Rod Standard Shaft Diameter: 30mm; Crankshaft standard Shaft Diameter: 31mm; We also have STD +25,+50,+75,+100, different thickness product, if you need, pls contact, or select our other listing. (1) The size is Shaft Diameter, Not Connecting rod and crankshaft inner Diameter.(2) Increase the size, the shaft diameter is reduced, the connecting rod and crankshaft bearing thickness increase. Product Description Material:Aluminium Tin Alloy Package:8pcs STD connecting rod and 10pcs STD crankshaft tile Fit for kawasaki ZX-6R 2009-2012 2021-2022 Product Features The use of professional production technology to enhance the product's pressure resistance, fatigue resistance Anti-occlusion ability, improve work performance, extend service life. Contact Us If you can't confirm the product if fit your motorcycle , please contact us here: Send a message to the seller.If you want to Wholesale, you can also contact us ,dear.Looking forward to your cooperation! Packaging and Shipping 1.Your parcel will be shipped out within 3 business days after you pay the order. 2.You can choose the shipping method before you pay it. If you want to use other shipping method, you can contact us.3.If you don't receive your parcel, you can contact us, we will track it and extend the protection time. Feedback 1.If you have any question, you need contact us at first, we will do our best to help you. 2.Five stars and positive feedback are important to us. If you are satisfied, hope you can give us 5 stars and positive feedback.