BIG TWIN PRIMARY DRIVES

1955 to 1984 Kick Start 3.0” Drive
144 tooth belt drive uses the 8.00 mm Gates HTD belt.
15910
40063 - Optional outer bearing support, 4-speed Big Twin, 1970 to 1984. Required with 15910 3.0” drive shown above.
1936 to 1954 Kick Start 3.0” Drive
144 tooth belt drive uses the 8.00 mm Gates HTD belt.
15909 - We manufacture a full line of premium quality Primary Drive Kits for all Harleys—back to 1936! You don’t have to run a late model to enjoy the benefits of belt drive
1994-1997 Electric Start Softail 1.75” Drive
132 tooth belt drive uses the 8.07 mm Goodyear STPD Kevlar belt.
16020
1994-1997 Electric Start Softail 1.75” Drive
78 tooth belt drive uses the 13.8 mm Gates HTD Polychain belt. (Not shown.) 16021
Karata primary drives all feature removable front belt retainers. It is not necessary to remove the motor pulley or engine nut for belt replacement with Karata.
1994-1997 Electric Start Rubber Mount 1.75” Drive
69 tooth belt drive uses the 14.0 mm Gates HTD Polychain belt.
16019
1994-1997 Electric Start Rubber Mount 1.75” Drive
132 tooth belt drive uses the 8.07 mm Goodyear STPD Kevlar belt. (Not shown.) 16023
1990 to 1993 Electric Start Softail 1.75” Drive
132 tooth belt drive uses the 8.07 mm Goodyear STPD Kevlar belt.
16017
Note: Dry installations require Karata sealed bearings.
1990 to 1993 Electric Start Softail 1.75” Drive
78 tooth belt drive uses the 13.8 mm Gates HTD Polychain belt.
16018
Our conventional 1.75” drives are perfect for enclosed primary drives run in stock primary cases, wet or dry.
1990 to 1993 Electric Start Rubber Mount 1.75” Drive
69 tooth belt drive uses the 14.0 mm Gates HTD Polychain belt.
16016
1990 to 1993 Electric Start Rubber Mount 1.75” Drive
132 tooth belt drive uses the 8.07 mm Goodyear STPD Kevlar belt. (Not shown.) 16022
1984 to 1989 Electric Start Softail 1.75” Drive
132 tooth belt drive uses the 8.07 mm Goodyear STPD Kevlar belt.
16014
All Karata Drives use stock style clutch plates in “wet” applications. Drives run open or “dry” require carbon lined clutch plates.
1984 to 1989 Electric Start Softail 1.75” Drive
78 tooth belt drive uses the 13.8 mm Gates HTD Polychain belt.
16015
Note: Dry installations require Karata sealed bearings.
1984 to 1989 Electric Start Rubber Mount 1.75” Drive
69 tooth belt drive uses the 14.0 mm Gates HTD Polychain belt.
16012
1984 to 1989 Electric Start Rubber Mount 1.75” Drive
132 tooth belt drive uses the 8.07 mm Goodyear STPD Kevlar belt. (Not shown.) 16013
1980 to 1984 Electric Start 5-Speed Rubber Mount 1.5” Drive
69 tooth belt drive uses the 14.0 mm Gates HTD Polychain belt.
16011
Our conventional 1.50” drives are perfect for enclosed primary drives run in stock primary cases.
1980 to 1984 Sturgis Repair Assembly 30% Stronger Than Stock.
1.5” wide, 78 tooth belt drive and 1.5” wide, 24 tooth front pulley and nut.
19010
Need help? Call Karata for technical assistance or information on special applications at 610-825-2070.
1955 to 1984 Kick Start 1.5” Drive
132 tooth belt driveuses the 8.07 mm Gates HTD belt.
15902
Same as above but with 78 tooth belt, uses the 13.8 mm Gates HTD belt. (Not shown.) 15908
1955 to 1984 Electric Start 1.5” Drive
132 tooth belt drive uses the 8.07 mm Gates HTD belt.
16002
Karata primary drives all feature removable front belt retainers. It is not necessary to remove the motor pulley or engine nut for belt replacement with Karata.
Karata Drive conversions provide contemporary belt drive technology for Big Twins all the way back to 1936.
1955 to 1984 Electric Start 1.5” Drive
78 tooth belt drive uses the 13.8 mm Gates HTD Polychain belt.
16008
1936 to 1954 Kick Start 1.5” Drive
132 tooth belt drive uses the 8.07 mm Gates HTD belt.
15901
1936 to 1954 Kick Start 1.5” Drive
78 tooth belt drive uses the 13.8 mm Gates HTD polychain belt.
15907
1981 to 1984 Electric Start Sportster
1.5” wide, 117 tooth belt drive uses the 8.00 mm Gates HTD belt.
15703
1977 to 1981 Electric Start Sportster
1.5” wide, 117 tooth belt drive uses the 8.00 mm Gates HTD belt. (Not Shown.)15702
1971 to 1976 Electric Start Sportster
1.5” wide, 117 tooth belt drive uses the 8.00 mm Gates HTD belt. (Not Shown.)15701
1981 to 1984 Kick Start Sportster
1.5” wide, 117 tooth belt drive uses the 8.00 mm Gates HTD belt.
15603
1977 to 1981 Kick Start Sportster
1.5” wide, 117 tooth belt drive uses the 8.00 mm Gates HTD belt. (Not shown.) 15602
1971 to 1976 Kick Start Sportster
1.5” wide 117 tooth belt drive uses the 8.00 mm Gates HTD belt. (Not Shown.) 15601
1957 to 1970 Race Sportster
3.0” Drive 117 tooth belt drive uses the 8.00 mm Goodyear STPD Kevlar belt. This unit is designed for open primary, high out-put racing applications.
15605
54000 - 1957 to 1970 Sportster Slipper Clutch. For use with our #15605 Primary Drive Kit