Ask a Mechanic: 29er Forks – 46mm or 51mm Offset? Ask a Mechanic: 29er Forks – 46mm or 51mm Offset? Daniel2018-01-04T12:14:18-08:00 Welcome to our Ask a Mechanic column where our expert mechanic Daniel Slusser answers Ask a Mechanic: 29er Forks – 46mm or 51mm Offset?Daniel2018-01-04T12:14:18-08:00