Heavyweight grand tourers — built for the long haul, not the corners.
Heavyweight tourers are a different proposition to sport-tourers. We're talking Gold Wing, K 1600, R 1300 RT, and the now-departed Concours 14 (last sold US 2015). 350kg+ wet, full fairing, integrated luggage, top-box, heated everything, and engines designed for cruising at interstate speeds for as long as you want.
This segment is shrinking. The audience is older, the bikes are expensive, and big ADVs have eaten a lot of the customer base. The K 1600 is the only six-cylinder motorcycle on sale anywhere, and the Gold Wing is one of the very few flat-six bikes ever built. They're engineering exotica masquerading as practical machines.
If you do thousands of miles a year with a passenger and want the best long-distance motorcycle money can buy, this category is unmatched. If you don't, look at sport-tourers or ADVs instead.
1833cc flat-six
1300cc liquid-cooled boxer
1649cc inline six
ZG1000 → Concours 14. Discontinued in US after 2015.
1890cc · only remaining Thunderstroke bagger · quick-detach windshield
Thunderstroke 116 OR PowerPlus 112 · split lineup · Goldwing/Ultra rival
Street Glide / Road Glide · M-8 117 VVT · best-selling US motorcycle
1085-1261cc V4 shaft drive — police bike, killed 2014
1215cc triple — failed BMW R1200RT challenger, killed 2017
M8 117 batwing-fairing bagger — best-selling US bike
M8 117 frame-mount shark-nose bagger
PowerPlus 108 liquid-cooled bagger — HD rival
Liquid-cooled full-dress tourer
1380cc V-twin cruiser-tourer — killed 2021 (Euro 5)