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INTIMIDATOR PRIMARY BELT DRIVES - KNUCKLEHEAD

1936-1954 Left-Side Drive: 3”, 4” Widths - 4-SPEED, 5-IN-4 & SOFTAIL 5-SPEED CONVERSION
 KNUCKLEHEAD 4.0 inch primary belt drive 1990 - 1999
INTIMIDATOR 1936-1954 4-speed Knucklehead FX/FL models -Rigid frame Conversion to 1990-1999 Softail transmission
3"16484
4" [shown]16485
 KNUCKLEHEAD 4.0 inch primary belt drive 5 to 4
INTIMIDATOR 1936-1954 4-speed Knucklehead FX/FL models with aftermarket 5-in-4 transmission
3"16482
4" [shown]16483
 INTIMIDATOR COMPLETE BELT DRIVE KIT
 
INTIMIDATOR KNUCKLEHEAD FX/FL BELT DRIVE KIT
All INTIMIDATOR belt drive kits are complete as shown above and described below.
Note: plate shown is for illustrative purposes only
 INTIMIDATOR Knucklehead FX/FL models with 1973-1978 Ratchet Top 4-speed trans
INTIMIDATOR 1936-1954 4-speed Knucklehead FX/FL models with 1973-1978 Ratchet Top 4-speed transmission
shown with optional 40097 ‘Hubcap’ front pulley cover and 40099 ‘Hubcap’ rear pulley cover
3" [shown]16480
4" 16481

CONVERT ANY 1936-1954 FX/FL 4-SPEED MODEL TO A SOFTAIL 5-SPEED
primary belt drives are designed to work on Big Twin models from 1936 to present. belt drives for Knucklehead models offer a wide selection for customizing classic 4-speed FX/FL models. Available in two sizes, beefy 4” and traditional 3”, this innovative primary belt drive converts any 1936-1954 FX/FL 4-speed with rigid frame to accept a 1990-1999 Softail-style 5-speed transmission. This combination installs in the 4-speed swingarm frame with only a slight modification to the transmission case. Rigid frame applications require no modifications, but a Paughco transmission plate is necessary.

1936-1954 FX/FL 4-SPEED MODELS WITH 4-SPEED OR AFTERMARKET 5-IN-4 TRANSMISSIONS
Any 1936-1954 FX/FL 4-speed swingarm model can be fitted with a primary belt drive. These belt drives are available for motorcycles running either 1973 - 1978 Ratchet Top 4-speeds or 5-in-4 transmission conversions and are available in two sizes, beefy 4” and traditional 3”.

CUSTOM OPTIONS FOR CUSTOM BIKES
primary belt drives #16480-16485 are designed for custom motorcycles that use aftermarket 4-speed-style frames or Rigid frames that use ratchet-top 4-speed transmissions. For 1990-1999 Softail transmission conversions, many aftermarket Softail and rigid frames can be used. Regardless of which transmission option you choose, the primary belt drives offer new options for custom motorcycle design.

outboard bearing support system is an ideal option for 3” and 4” belt drives. See Outboard Bearing Supports [OBSS] for the wide assortment of Outboard Bearing Support plates and cover combinations available.

ALL INTIMIDATOR SERIES PRIMARY BELT DRIVES INCLUDE THE FOLLOWING:
  • One-piece billet aluminum motor plate with sealed mainshaft bearing, installed
  • Billet aluminum jackshaft support
  • Billet steel starter jackshaft
  • Front pulley with steel retaining ring
  • Rear pulley with ring gear and double-row clutch hub bearing, installed
  • Goodyear Hibrex with Flexten Plus technology 8mm belt
  • Engine shaft nut
  • All necessary hardware included

 

Karata Enterprises Co
3 River Road
Conshohocken, PA 19428
Phone 610-825-2070
Fax 610-941-6142
Karata@Karata.com