Overview Reviews Product Description RK Racing Chain M420-104 420 Series 104 Links Standard Non O-Ring Chain RK Racing Chain M420-104 Product Videos Custom Field Product Reviews Write a Review Write a Review × RK Racing Chain RK Racing Chain M420-104 420 Series 104 Links Standard Non O-Ring Chain Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *