In 1953 the FLE and FLEF models were introduced. The E designatining a traffic combination motor Designed for slow speed operation using special cams and smaller carb.
The the EL,ELF,ELS 61cu inch models and the FLS 74 cu inch sidecar gearing model are discontinud ending the sidecar gearing option.
both lifters and pinion shaft bearings are upgraded in 1953.
the lifters are moved to the top of the tappet block and fed
constant oil pressure via a crankcase oil feed hole to the tappet block that
feeds the lifter.
the pinion shaft bearing is upgraded from twelve rollers to twenty four.



here are some great resourses for detailed information about  Harley  Davidson’s 1953 panhead

How to restore your Harley-Davidson by Bruce Palmer 111

Riding vintage website

the Jocky Journal web forum The panhead and flathead site

The Harley Davidson Panhead service manual 48-57 rigid

1953 models
model engine type actual displacement compression factory options
FL  sport solo 74 c.i.high compression 73.66 c.i. 7.0:1 ___
FLF sport solo footshift 74 c.i.high compression 73.66 c.i. 7.0:1 F=foot shift
FLE  sport solo traffic combination 74 c.i.high compression 73.66 c.i. 7.0:1 E=traffic comb
FLEF sport solo traffic combination foot shift 74 c.i.high compression 73.66 c.i. 7.0:1 F=foot shift E=traffic comb

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

1953 models available colors
paint stripes speedometer
black _____ Blue with Silver Blue Outside Perimeter. Silver Center
pepper red _____ _____
glacier blue _____ _____
forrest green _____ _____
glamour green _____ _____
police silver _____ _____
cavaier brown _____ _____
white _____ _____