Editing Straight-six engine (section)

== Usage in motorcycles ==
[[File:Honda CBX Engine Detail.jpg|thumb|1978-1982 [[Honda CBX]] engine]]

From 1964 to 1967, Honda produced several [[Grand Prix motorcycle racing]] motorcycles powered by straight-six versions of the [[Honda RC series|Honda RC]] petrol racing engine; these versions were designated the '3RC164', 'RC165', 'RC166' and [[Honda RC174]].<ref>''Honda's Race History''</ref> The unrelated road-use [[Honda CBX]] was produced from 1978 to 1982 and was powered by a {{convert|1047|cc|cuin|abbr=on|1}} dual overhead camshaft petrol engine.<ref>Honda CBX 1000 Gold Portfolio 1978–1982. R. M. Clarke. Brooklands Books, 24 January 1999</ref><ref>{{cite web|url= http://www.motorcycleclassics.com/motorcycle-reviews/1981-honda-cbx.aspx |title=1981 Honda CBX|publisher=Motorcycle Classics|access-date=11 November 2009 |date=November–December 2009 |first=Greg |last=Williams}}</ref>

The 1973–1989 [[Benelli Sei]] series was the first road-use motorcycle to use a straight-six engine. Initially released with a {{convert|747|cc|cuin|abbr=on|1}} single overhead camshaft petrol engine, in 1979 it was upgraded to a {{convert|906|cc|cuin|abbr=on|1}} engine.<ref>{{cite book |title=The Ultimate Motorcycle Book |first=Hugo |last=Wilson |publisher=Dorling Kindersley|date=1999 |isbn=9780751306538}}</ref>

The 1979–1989 [[Kawasaki Z1300]] roadster motorcycle was powered by a {{convert|1286|cc|cuin|abbr=on|1}} dual overhead camshaft petrol engine.<ref>{{cite book|title=Ultimate History of Fast Bikes |first=Roland |last=Brown |date=2004 |publisher=Parragon |isbn=9781405437325}}</ref>

From 2011–present, the [[BMW K1600]] series of touring motorcycles have been powered by a {{convert|1649|cc|cuin|abbr=on|1}} dual overhead camshaft petrol engine.<ref>{{cite web |url= http://www.motorcyclenews.com/MCN/News/newsresults/New-bikes/2010/june/jul0210-bmw-announce-k1600-gt-and-gtl/ |work=Motorcycle News |title=BMW announces K1600 GT and K1600 GTL six-cylinder tourers| first=Chris |last=Newbigging |date=2 July 2010| access-date=22 July 2010}}</ref><ref name=mcusa>{{cite web | url= http://www.motorcycle-usa.com/616/7370/Motorcycle-Article/2011-BMW-K1600GT-First-Look.aspx |title=2011 BMW K1600GT First Look |first=Bart |last=Madson |date=2 July 2010 |website=motorcycle-usa.com |access-date=22 July 2010}}</ref>