If you are reading this, I assume you are sick and tired of that silly hump on your xt660z!? So was I! After a long trip to Italy in 2019, I realised that Hump is a terrible idea! It’s so high that if you ride on XT as a passenger you need a different kind of weather forecast, and if you are a pilot – the iron butt to sit still.

I must admit that at first I liked it, somehow it made the bike feel very very connected to me, but covering hundreds of miles in a day, day after day, made it extremely uncomfortable not only for my rear end, but also my knees as sitting still for hours and not having room to move a bit – is just impossible!

Another problem I had with it, when riding off road, if the rear end goes flying and hits the rider up in the… oh… you know the fun of it!

To be honest, I didn’t want to spend my coins on modifying it, and after that long trip I was so sore that I simply stripped the cover of it, borrowed my partner’s kitchen knife, and simply shaved it off! I thought it will be as simple and painless as that! However it turned into a slightly bigger project than expected, because…

While shaving that hump off I got very close to the plastic base, and after trying to sit on it, realised that just shaving foam will make it only worse and harder! So… First I heated up the plastic base to push that hump out of the way, but I couldn’t even straighten it out! After fighting it for a few hours like that, eventually I decided just to cut that plastic part out completely, while it was out – filled the void with foam shavings, and covered it with carbon fiber mat and fiberglass! Ugly, I know, but who will see it?

By the way, I had a plan to cover the seat with a thin (5mm or so) layer of foam once I’m finished shaving it off- just to give it a smoother look, however I didn’t do that straight away as I planned to try it out for a few months first, and then get back to it, make some changes if needed and finish it of, but i never did!

At the end of the day, it might not look like a professionally made seat, but it is a hell of a lot more comfortable now! Plenty of room to move around means less cramps, tired knees and sore rear ends, added bonus – hitting bumps with the rear wheel is not as scary anymore – as there is nothing back there that would jump up and hit me in my balls!

If someone out there is planning to do something similar, well – go for it, but before you cut, mark your lines, don’t rush, and make sure to have some thin foam ready for the finishing touches!

Ah, almost forgot to mention, this mod is simple and all is needed is this:

Flat screwdriver to remove old staples (parners kitchen knife also works, but she might be upset if she will find out).
Marker, to mark the lines on the foam – to know how far to go with all the shaving.
Partners sharpest biggest kitchen knife (warn you – she might get upset a bit)
A bucket load of patience while shaping / shaving / trimming seats foam.
Fiberglass / carbon fiber and Epoxy (not necessarily, but highly advisable).
Some contact cement (to glue cover back on in places where staples dont work that well, or simply too long – not necessarily but good to have).
Powerful staple gun with decent length staples (5-10mm staples, and not paper stapler though!).