


Prima Rear Rack (Chrome); GT 150, GP 300S
This rear rack uses existing hardware to replace the stock platform on the Royal Alloy.
The stock Royal Alloy rack measures 8 1/2 wide x 11 deep and sits at an angle. The Prima Royal Alloy rack measures 12 1/4 wide x 8 deep and sits level. This allows for the mounting rollbags, milk crates and baskets. Topcase mounting is not recommended.
The platform folds up when not in use.


The Sidecar Has Arrived
The sidecar is the perfect accessory for your 2027 Royal Alloy GP300S, adding a distinctive new dimension to the proven Grand Prix platform. Factory designed, built, and balanced specifically for the GP300S, it combines classic-inspired styling with modern engineering and convenience.
Find your local Royal Alloy dealer and see it for yourself.
Sidecar Features

Coilover Shock
12” sidecar wheel with coilover shock suspension delivers a smoother, more comfortable ride, no matter where the road takes you.

Passanger Amenities
A passenger seat belt and grab handle add security and peace of mind, while USB-A charging keeps your passenger connected throughout the ride.

Trunk Storage
Lockable storage trunk keeps your essentials safe and close at hand, with a clean, integrated look that complements the sidecar’s classic design.