Installation Guide for Coocase S28, V28, V36, V37, S48 & S50 base plates

In this article, we illustrate how to mount a Coocase base plate to the most common types of rear luggage racks.

Coocase base plates can usually be installed the several types of flat rear luggage racks using the included "universal" hardware kit. Rear luggage racks typically fall in several categories:

• Rear luggage rack constructed of steel tubes (e.g., Five-Stars Topracks)
• Rear luggage racks constructed of flat sheet metal
• SW-Motech Alu-Rack Topracks (requires an adapter plate, sold separately):
  • Plate for Basic S28, V28, V36, and V37 topcases
  • Plate for Volt (electrified) S28, V28, V36, and V37 topcases
  • Plate for Basic S48 and S50 topcases
  • Plate for Volt (electrified) S48 and S50 topcases
• Other aftermarket topracks that use plastic adapter plates

If your rear luggage rack is not flat, you'll need to either replace it with a flat rear rack or shim up the Coocase plate so it sits flat.

If your bike has a sissybar or backrest, you may need to remove it prior to Coocase installation. Otherwise, you may not be able to open your Coocase.

See our application chart for bike-specific fitting information. Contact Us for assistance if your bike is not listed!

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Types of Coocase base plates - small or large

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Mounting small base plate to a rear luggage rack constructed of steel tubes

The first image is a Five Stars Tubular Toprack without any hardware installed. The second image is the bottom view of an installed S28 / V28 / V36 Coocase Adapter Plate, and the third image is the top view of the same adapter plate.

See additional images of the small Coocase base plate installed on a Five Stars Tubular Toprack.

Mounting large base plate to a rear luggage rack constructed of steel tubes

The first image is a Five Stars Tubular Toprack without any hardware installed. The second image is the bottom view of an installed S48 Coocase Adapter Plate, and the third image is the top view of the same adapter plate.

For topracks with multiple tube diameters, always try to use the largest diameter tubing possible as mounting points for your adapter plate. Space your mounting points as far away from each other as the design of your tubular rack allows, as increasing distance between the mounting points will increase the stability & strength of your adapter plate.

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Mounting to rear luggage racks constructed of flat sheet metal (correct method)

The first image is a generic flat sheet metal rear rack without any hardware installed. The second image is the bottom view of an installed V28 / V36 Coocase Adapter Plate, and the third image is the top view of the same adapter plate. The fourth image is the top view of the S48 adapter plate.

Try to mount the Coocase base plate as far rearward as possible to maximize passenger space; however, do not mount the plastic plate so that more than 1/3 of it is unsupported by a stable metal surface. Through-bolt the adapter plate directly to a hole in the rear rack that is small enough so that the W-shaped washer and bolt cannot slip out.

Mounting to rear luggage racks constructed of flat sheet metal (incorrect method)

Never use W-shaped washers to clamp onto cutouts of flat sheet metal topracks as shown!The image on the left is an example of how NOT to mount your adapter plate. Vibration can cause the W-shaped washers to rotate to the position in the image on the right, which could result in the top plate falling off the rear rack.

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Mounting to an SW-MOTECH Alu-Rack

SW-Motech Alu-Rack Topracks require an adapter plate, sold separately:

• Plate for Basic S28, V28, V36, and V37 topcases
• Plate for Volt (electrified) S28, V28, V36, and V37 topcases
• Plate for Basic S48 and S50 topcases
• Plate for Volt (electrified) S48 and S50 topcases

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Mounting to aftermarket topracks using Coocase Adapter Kit 3

For many aftermarket topracks that use plastic adapter plates, you may use the Coocase Adapter Kit 3 (CC.HB-01) (sold separately) to install a Coocase base plate:

The first image is the rear rack with the original plastic plate installed. The second image is with the original plastic plate removed and the Coocase Adapter Kit 3 (CC.HB-01) installed in its place. The third image is the top view once the V28 / V36 adapter plate is added, and the fourth image is the top view once the S48 adapter plate is added.

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Mounting to aftermarket topracks for the '03-'09 Ducati Multistrada or '07-'10 Kawasaki Versys

This installation uses Coocase Adapter Kit 2 (GPT.00.152.157_TWT) (sold separately) as shown:

The first image is the rear rack with the original plastic plate installed. The second image is with the original plastic plate removed and the Coocase Adapter Kit 2 (GPT.00.152.157_TWT) adapter installed in its place. The third image is the top view once the V28 / V36 adapter plate is added, and the fourth image is the top view once the S48 adapter plate is added.

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Don't see your style of toprack listed?

Please Contact Us for bike-specific fitting assistance if you don't see a toprack example above that matches your bike.