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Debris deflector for belt drive motorcycles — Harley-Davidson patent US4366880A (1983)

PatentUS4366880A
TypeUtility patent
Filed1981-01-15
Granted1983-01-04
InventorRussell F. Miller
SystemPrimary & final drive

“A debris deflector for a motorcycle which employs a belt drive for the rear wheel includes a deflector plate positioned between the motorcycle swing arm and the tire. The deflector is located between the runs of the belt. The deflector includes an indentation in the area of the swing arm, an upper…”

Full patent textDownload PDFShop primary & final drive parts

Drawings (1 sheet)

Debris deflector for belt drive motorcycles — sheet 1

Parts for this system

14-6909
Ultima Clutch Pulley Cover Oil Seal
$5.40
20-8858
Ultima Belt Drive Outer Plate Support Spacer
$5.52
37-9892
Ultima 6-Speed RSD Tranmission Pulley Cover Set Screw
$6.35
20-8890
Ultima 2" Bagger Belt Drive Wave Washer
$6.35

Check fitment first — add your bike and we flag what fits.

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Drawing from the US patent record (via Google Patents). A patent shows the invention as filed, not necessarily the production part on your motorcycle — confirm fitment for your model and year. Independent aftermarket retailer, not affiliated with Harley-Davidson, Inc.