There Were a lot of trail reducers made which did not have the raised rear on them. They reduced the trail but also lowered ground clearance due to the re-angled front fork assembly. This can b e aconcern with some bikes. The ones we make have the raised rear on them and are one piece machined billet. The trick is to get the dimensions right so the trail that was reduced is not gained back again when the rear of the trail reducer is raised. It is a numbers balancing act until it is right. Raked trees can also reduce ground clearance for similar and obvious reasons. Some bikes need fork extensions to get back th etrail reduction desired while maintaing bround clearance. Personally I much prefer a leading link but they are more costly. One must eigh cost vs value just like with many things. With alink you can make the trail anything you want and maintian or gain ground clearance as desired. Same is true with a center hub front end. The DeDome type modification is also excellent as it maitains the the stock fork angle thus no concerns arise regarding the upper fork pivot area on the GS bikes. This type of mod does not kick the fork forward but steepens the steering axis angle to acheive reduced trail...... Good system. Of course the various leading leg type assemblies out there are also an option. We built one of these for a V Strom which as totally made of machined parts. It worked well but for other reasons we decided not to persue the production of it. Not knocking the idea here as it does have merit. One other thing that has been done with bikes with convetional trees is to simply increase the offset between the fork tubes and the steering pivot point without changing the angle of the forks. This can be done with newly manufactured trees , modified trees or in some cased with braketry to move th eforks out in front of th eexisitng trees. Many way s to skin a cat and of course everyone who sells a certain product will say they have the best thing goings ..so it goes..lol.