The K400SNMO trunk and hatchback mount provides a dependable platform for mobile radio antennas on sedans, hatchbacks and compact vehicles. Each package includes the K400 Series clamp assembly with an integrated NMO base, all required fastening hardware and instructions for a no‑drill installation. The mount accepts common NMO-style mobile antennas and can be paired with standard jumpers and coax adapters as needed.

Manufactured from precision‑machined metal components and finished with a corrosion‑resistant coating, the K400SNMO is built to withstand vibration, wind load and year‑round outdoor exposure. Its solid construction offers the structural strength required for daily driving, highway use and professional mobile operations. The unit’s low‑profile footprint and stout clamp design minimize movement while maintaining a neat appearance on the vehicle’s trunk or hatch edge.

An adjustable angle mechanism allows the operator to fine‑tune antenna orientation to improve radiation efficiency and reduce signal loss on sloped trunks and angled hatch seams. The clamp is designed to accommodate a range of trunk and hatch lip geometries and thicknesses, providing a secure bite without permanent modification to body panels. Because the mount installs without drilling, vehicle paint and factory finishes remain intact—making it well suited for leased cars or fleet vehicles that require removable hardware.

Installation simply involves positioning the clamp on the trunk or hatch lip, tightening the secure clamping hardware, and attaching an NMO-compatible antenna to the integrated base. The result is a professional, reversible mounting solution compatible with amateur radio, two‑way radios and commercial mobile communications systems. Its combination of durability, adjustability and non-invasive mounting makes the K400SNMO a practical choice for operators seeking reliable performance over the long term.

VerdictA robust, reversible mounting solution for trunk lips and hatch edges that blends strength and convenience. The K400SNMO’s machined metal body and corrosion-resistant coating deliver long-term durability, while the adjustable angle and integrated NMO base provide flexible antenna placement and broad compatibility. Ideal for users who need a non‑invasive, professional-looking mount that resists vib

Ernie Byars 5/5

Perfect fit for Model 3

Installed on a Tesla Model 3 and it works flawlessly.

AR 5/5

Sturdy, well-made mount

I owned a similar model with a PL‑259 connector and this feels just as solid. Simple to fit. My only gripe is the coax lead ended about three feet short for my routing, so I added a small jumper. Mounted on a 2006 Lincoln Town Car trunk and the cable reaches under the front seat.

Rex 5/5