1958 brought a big change to the panhead models. starting in 1958 until 1964 they would be designated duo-glide.in reference to the newly designed step down straight leg swing arm frame with rear shock asorbers. this also involved changes to the horseshoe oil tank and many frame and rear fender changes to accomadate the mounting of fear shocks.
other changes include hydraulically actuated rear brake light switch, a two unit voltage regulator,cast aluminum intake manifold,
thicker cylinder head fins and a tear drop tool box.
optional dual exhaust system available.
Here are some great sources for detailed information about Harley Davidson’s 1958 Panhead
How to restore your Harley-Davidson by Bruce Palmer 111
the Jocky Journal web forum
hydra-glide.com The panhead and flathead site
The Harley Davidson Panhead service manual 58-59
|model||engine type||actual displacement||compression||options|
|FL sport solo||74 c.i.high compression||73.66 c.i.||7.25:1||—|
|FLF sport solo footshift||74 c.i.high compression||73.66 c.i.||7.25:1||F=foot shift|
|FLH super sport solo||74 c.i.high compression||73.66 c.i.||8.0:1||—|
|FLHF super sport solo foot shift||74 c.i.high compression||73.66 c.i.||8.0:1||F=foot shift|
NOTE: the ” F “ denoting foot shift will not be stamped in serial number.
1958 models available colors
|*black||—||Warner speedo with italic “Day-Glo” green numbers and hash marks with gold painted center|
|*sabre grey metallic||—|
|P police white||—|
|P police silver||—|
|*calypso red /birch whiter||—|
|*skyline blue/birch white||—|
|*sabre grey metallic/birch white||—|
*Two-tone is standard in 1958, 1st color is tank top and fender sides, 2nd color is tank bottom and fender top.
No extra cost: any solid standard color
* standard solid color could be ordered at no extra charge.
P =police only
sabre grey metallic