Our 550 Spyder clamshell (rear lid) gas support strut kit replaces the factory manual prop rod system with a self-supporting gas strut mechanism. Once installed, the clamshell is supported automatically in the open position, eliminating the need to reach inside the engine bay to locate, position, or remove the prop rod.
Operation is straightforward: unlock the rear clamshell and lift it to the open position, the gas struts provides lift assistance and holds the clamshell open. To close, apply downward pressure and lower the clamshell in a controlled manner. The factory latch must still be engaged after closing to fully secure and lock the clamshell.
Kit includes:
-
Gas Support Struts (2)
-
Left (Driver) Side Mounting Bracket (1)
-
Right (Passenger) Side Mounting Bracket (1)
-
Mounting Hardware:
-
6-8 3/16" × 3/4" Aluminum Pop Rivets (16)
-
Aluminum Pop Rivet Washers (16)
-
Large Washers (4)
-
5/16-18 Thread Nylock Nuts (2)
- 10mm 5/16-18 Thread Ball Stud (2)
-
Compatible with:
-
Beck / Chamonix 550 Spyder
-
Thunder Ranch 550 Spyder
-
Vintage Motorcars 550 Spyder
Installation notes:
This is not a bolt-on kit. Installation requires accurate drilling and welding of mounting points. Professional installation is recommended, especially for installers without welding or fabrication experience.
Installation Guide is available here:
SKU: HA27.1

