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Searching for the best retractable tonneau cover for a GMC® Sierra* or Sierra HD? The Mountain Top EVO-M retractable tonneau cover is the best solution for those looking to add convenient and durable protection to their 1500 or 2500 truck bed. This lid is designed to take up as little space as possible in order to optimize truck bed storage. With accessory tracks and a sophisticated water management system built right into the rails, this retractable tonneau cover can add tons of utility to your pickup truck while keeping stored gear safe and dry; perfect for a work truck or for outdoor lifestyle activities like fishing, camping, and mountain biking.

  • Featuring the smallest retractable cover canister on the market at just 8.28 inches in height by 9.93 inches in width, providing additional space under the cover.
  • Over-450 pound weight capacity on top of the tonneau cover allowing you to place gear and other items on top.
  • Strong and lightweight aluminum slats provide cut proof security and durable protection.
  • Six point drainage system that can drain up to 10 gallons of water/minute.
  • Sleek top of bed infinity rail design for increased truck bed storage space under the cover and a simple and clean look.
  • Easy installation that can be taken care of by a home mechanic or one of our authorized installers.
5.5' Bed Part #: EVOmCH15FB01 
6.5' Bed Part #: EVOmCH16FB01

*Not compatible with the GM Carbon Pro Bed.
**5.5' Short Bed fits '14-'22 GMC Sierra.
**6.5' Standard Bed fits '14-'22 GMC Sierra and '14-'19 Sierra HD.