There are a number of DRZ400 side pannier racks and top luggage racks on the market, but my preference is to custom build my own. The main reason is, like most bikes with a single exhaust, many companies produce side pannier racks that stick out far wider on the exhaust side. I am not really a fan of one pannier box sticking way out and one pannier box tight into the bike, it just looks odd to me. With the custom built side pannier racks I was able to overcome this by modifying the exhaust side cover which allowed the pannier frames to fit more snuggly to the bike while still allowing plenty of distance for ventilation and minimising heat transfer between the exhaust and the pannier boxes. Not only do these side pannier racks bring the boxes in closer, I was able to set both the left and right pannier box at equal distances bringing symmetry to the bike and rack system.
As for the top luggage rack, again there are many DRZ400 top rack options available on the market, but the one below was also custom built to match the side pannier racks and also accommodates for two fly rod tubes and a custom top luggage bag.
This is a DRZ400E subframe. From factory the DRZ400E subframes don’t actually have the lower lug to mount side pannier racks seen here, these lugs (one on the left one on the right) were welded on. If you have a DRZ400S or DRZ400SM subframe then these subframe lugs will already be present as they are used for the passenger foot pegs, this makes life easy. If you have a DRZ400E (or DRZ400K) subframe without the lugs the lower pannier rack arm can be extended to mount to the bolt that secures the subframe to the bike frame. The second mounting point is to the top of the subframe, this mounting point is factory on all subframes, DRZ400K, DRZ400E, DRZ400S and DRZ400SM
You can see here the extra lower lug that has been welded on to the right side of the subframe and joined to the exhaust mount lug. As for the top mounting point (above the exhaust), this is present on all DRZ400 models
On both of the pannier rack hoops there are 6 holes used to secure the pannier box. These 6 holes were drilled to 10mm and then had 10mm tube (with a 6.7mm internal diameter) inserted and welded into place, these tubes were then drilled to 6.9mm and tapped at 8X1.25 for M8 bolts to secure the pannier boxes
The top luggage rack
The top luggage rack has been designed to be slightly narrower than the side pannier racks so the lids of the pannier boxes can swing up and open without any problems.
On the inside of the top luggage rack, 4 tubes are welded in place to be used to secure and centre the fly rod tubes (images of this further down). On the outside there are 6 loops for 50mm Velcro to hold the top bag down onto the top rack. Notice the two lugs in the middle that match up with the two holes in the top of the rear guard and the top brace on the subframe. This style of mounting is suitable for the DRZ400E (road registered version), DRZ400S and DRZ400SM. The DRZ400K and some DRZ400E dirt/short subframe models do not have this top subframe brace
With the top luggage rack mounted in place you can see the two bolts in the top of the rack going into the subframe securing it from the top. From the side, two lugs with bolt holes that align with the seat bolts secure it from the side/front. Spacers are used for easier mounting (better image below). Also note the right side cover has been modified with an alloy mesh to increase ventilation around the side pannier racks and pannier boxes
Fiberglass pannier boxes
Click here for an article on the fiberglass DRZ400 pannier boxes in the above images