BAKFlip MX4 vs F1 (Full Comparison)
The main difference between the F1 and MX4 BAKFlip tonneau covers is that the MX4 has a matte finish while the F1 has a glossy finish. The other difference is that the MX4 can hold up to 500 lbs on top while the F1 can only hold 400 lbs. And lastly, the F1 has a dent-resistant polymer material compared to aluminum in the MX4.