Ask a Mechanic: How to Replace & Install BOA Dials on Cycling Shoes Ask a Mechanic: How to Replace & Install BOA Dials on Cycling Shoes Greg O'Keeffe2015-12-16T14:11:20-08:00 The BOA dial on my shoes keeps slipping when I get them tight. Can Ask a Mechanic: How to Replace & Install BOA Dials on Cycling ShoesGreg O'Keeffe2015-12-16T14:11:20-08:00