1957 models

1957 sales brochure

1957 sales brochure

In 1957 the FLE and FLEF traffic combination  models are discontinued leaving only the FL,FLF,FLH and FLHF models.
1957 featured new round Lucite tank emblem. this emblem and a new fender tip were Harley’s first use of plastic for emblems.
Engine changes include steel alloy valve guides replacing the bronze, exhaust guides are threaded to trap oil,
shorter push rods with longer adjusters,stronger valve springs.
big Bertha saddlebags are optional in 1957 only.

 

Here are some great sources for detailed information about Harley Davidson’s 1957 Panhead

How to restore your Harley-Davidson by Bruce Palmer 111

Riding vintage website

the Jocky Journal web forum

hydra-glide.com The panhead and flathead site

The Harley Davidson Panhead service manual 48-57 rigid

1957 models
model engine type actual displacement compression factory 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 73.73 c.i. 8.0:1 __
FLHF super sport solo foot shift 74 c.i. high compression 73.73 c.i. 8.0:1 f=footshift

NOTE: the ” F denoting foot shift will not be stamped in serial number.

1957 models available colors
paint stripes speedometer
*black _____ Warner speedo with italic "Day-Glo" green numbers and hash marks with gold painted center
*pepper red _____ _____
*skyline blue _____ _____
*birch white _____ _____
P police white _____ _____
P police silver _____ _____
*metallic midnight blue _____ _____
pepper red/black tank panels _____ _____
black/pepper red tank panel _____ _____
skyline blue/birch white tank panels _____ _____
birch white/black tank panels _____ _____
* metallic midnight blue/birch white tank panels _____ _____

*= extra charge

* =standard color could be ordered without tank panels at no extra charge.

P =police only