"Evotech have the cross frame support, Kawasaki do not"...they don't cause it's a waste of material.It doesn't help in a dropover anyway.The stress is on the engine mount(where it's attached)Right into the frame..Actually,your evotech slider has a real weak spot.It's not directly connected to the main frame.That bolt holding it in there will snap probably.Plus it doesn't appear on their site that the bobbin actually comes out as far as the factory Kawi one.The shape of the Kawi one has a length to it that helps keep the bike from seesawing as it's sliding.Not so sure about that round bobbin.Looks like the tail could easily move and hit the ground.(the pipe anyway).I KNOW the kawi ones saved all that back there from hitting.The placement for the bobbin on yours is NOT at the physical center of the highest point of the side.Makes a BIG difference in how damaged it could be...hope ya never have ta find out...I suppose a real moving laydown would be really bad with either slider.Not much could stop damage except a crash cage.
A real weak spot?
Check the images, it clamps right around the frame and also has a support right across the frame to connect it to the other side too versus the Kawasaki option of.... one Allen bolt!
Iím not here to diss the Kawasaki solution, itís just opinion but for me when the dealer tells you the OE solution is just a couple of bolts and sliders versus a full cross frame solution, then shows you the engineering involved it wasnít a very hard decision for me.
I made my choice based on looking at the kits and talking to an owner who dropped his with the Evotech installed.
Itís the highest point when the bike goes over, mirrors, levers and all the cases were saved, not one scratch just £8 for a new nylon bobbin to ref-fit (as you he also couldnít pick up the bike!)
Thatís not to say the Kawasaki slider doesnít work, it clearly (thankfully) helped you but didnít look very substantial for its price.
Best solution is not to drop the bike!
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