Just for the record, the SW-Motech skid plate, as we call it in the States, is officially known as the SW-Motech Engine Guard.
This type of engine guard is also referred to as a "bash plate" and probably a few other colloquialisms as well.
"Engine guard" seems correct to me, but many people use that term for the "crash bars" that protect the sides of the engine if the bike falls over.
Any Adventure Touring bike worth its mud flaps surely has to have a skid plate, which is a device used to protect the underside of the engine from damage.
I'll probably never need one, but hey -- it sure looks cool and I guess it shows that I'm serious about off-roading, right?
I looked around for a good, solid, high-quality skid plate for the DR650 and there are several available, but I went with the more expensive ($124.95 vs. $79.95 for the Pro Cycle version) SW-Motech Engine Guard for a couple of reasons.
First and most important, my experience has been that products made in Germany are usually precisely engineered with high quality parts and hardware.
I got burned on the installation of the hand guards for the DR650, as you'll learn when I get around to posting that review, and I didn't feel like going through another routine like that again with the engine guard.
The SW-Motech skid plate looks really nice also, with precision laser or water-jet cut holes and what seems like better coverage than other plates. It also looks like it will allow a fairly easy oil and filter change, and I'll see about that the next time the bike comes due for one. And finally, it will work with the SW-Motech center stand I also have, waiting for installation.
As it turns out, installing the SW-Motech skid plate was fairly easy, with one quirk. Also, there are no installation instructions, other than an exploded diagram.
The first thing I'd suggest is to lay out all of your hardware and check it against both the parts list and the assembly diagram to make sure you have everything need.
A parts list is included in the package that illustrates and lists each piece, so take some time to arrange the hardware and familiarize yourself with it, because the instructions aren't specific about what goes where. Also, you'll need a torque wrench because all of the parts have a specific torque requirement, especially the important main engine mounting bolt (see below).
Also not detailed in the non-existent instructions is the assembly order:
Here's a close-up of the mounting hardware for the SW-Motech Engine Guard. Make sure you have the same hardware (for the DR650; other motorcycles may differ). The long bolt replaces the original equipment main bolt that secures the DR650 engine to the frame. More on this below.
It isn't explained in the instructions (because there are no instructions), but you'll need to first mount the brackets on the inside of the skid plate.
The small rubber grommets fit into the mounting holes on either side of the skid plate. These cushion the internal mounting brackets from vibration. The holes in the skid plate are slightly oval shaped to allow for any lateral adjustment that might be necessary due to tolerance variations, but the grommets should fit right in.
On the left is a close-up of one of the four front mounting bolts. The parts are shown in the order of assembly. Note the spacer just to the right of the washer; it fits inside the rubber grommet.
On the right is a close-up of one of the rear mounting bolts that fits into the skid plate mounts that are installed on the DR650 at the factory. It's difficult to see in this photo, but the yellow arrow indicates the larger rubber grommet just below the large spacer. The spacer is indicated by the red arrow. This assembly bolts to the rear skid plate mounting brackets that are installed on the DR650 at the factory.
See the note below; I had to use extra washers because the bolts that came with the SW-Motech skid plate were too long and interfered with the bottom of the engine.
The arrow indicates the main mounting bolt (the long bolt) that must be removed and replaced with the new bolt included in the SW-Motech skid plate hardware package.
It wasn't difficult to remove the bolt, although you may need someone to hold the wrench on the left side of the bike while you loosen the nut on the right side.
SW-Motech recommends using Loctite on all of the fasteners and I used the blue Loctite medium grip. I also put a very thin coating of anti-seize on the main engine bolt just in case, to help prevent any corrosion in the future.
According to the Suzuki DR650 shop manual, the long engine bolt requires 65 Nm (47 ft. lbs.) of torque.