560
Primo Belt Drive
8MM Open
Open primary belt drive for 74” and 80” 8mm. These units
were designed for competitive use or big inch street engines.
Note: All 2” and 3” belt drive units fit adjustable
transmission bikes only.
VT No.
Fits
Width Replacement Belt
20-0041 1955-84 2” 20-0104
20-0042 1937-54 3” 20-0105
8MM Open or Closed
Open Or Closed Primary Belt Drive. Kick starter models
only (8mm) 1½” belt type.
VT No.
Fits
Replacement Belt
20-0044 1937-54 20-0102
20-0039 1955-64 20-0102
Note: All belts by Primo, Karata and BDL are manufactured by Gates Rubber. Belts for drives
carry no warranty of any kind, as sold either as individual replacements or complete drive kits.
20-0047
8MM Closed
Closed Primary for 74” and 80” is designed to fit inside pri-
mary cover. Increases horsepower, mileage and quiets engine
while retaining stock appearance. Closed Primary. Kick start
only 8mm. 1½” belt type.
VT No.
Years
Replacement Belt
20-0047 1978-84 20-0102
Electric Start Models (8mm). 1½” Belt type.
20-0010 1965-84 20-0100
20-0507 Starter Ring Gear
*Note: For models with belt drive.
V-Twin BDL
# of
79-84 BT 79-84 BT
Teeth 4-speed 4-speed
29
20-0653
30
20-0654
32
20-0656
33
20-0449* 20-0657*
Big Twin Drive Pulley accepts 1.125 or 1.5 wide belts. Front
Pulley includes pulley indexing nut seal and seal spacer as
required. Fits 1979-84 4-Speed.
Front
VT No. Finish
Tooth
20-0720 Raw 33
Rear
20-0452 Silver 70
20-0498 Chrome 70
20-0449
20-0498
Front Pulley
20-0720
48-0470
Knucklehead
48-0025
Panhead
48-0048
Shovelhead
48-0030
1340 cc
48-0044
Shovelhead
48-0498
80” UL
48-0372
XLCH 1971
48-1824
45”
48-0033
Dual Cam
Motor Plaques measure 18” x 24” and are made of metal.
Motor Plaque Set includes 9 plaques. VT No. 48-1811
Final Drive Front Pulleys avail-
able for Big Twin models as sup-
plied by V-Twin or BDL. All BDL
pulleys are ¹⁄₃ lighter than stock
and include nut, lock plate and
screws. Stock size pulley noted
by * utilizes 10-24 allen bolt to
lock nut.