MotoBuilder Bikes Products Resources Completed Builds Trends Benchmarks Forums

Explore

MotoBuilder
Products
Resources
Completed Builds
Trends
Benchmarks
Forums

Account

Company

About
Privacy Policy
Do Not Sell My Personal Information
Terms of Service

Info

FAQ
Code of Conduct
Ask an expert
Report a bug
Copyright / DMCA

© 2026 MotoLoadout. All rights reserved.

Account

Log in
Sign up

1991 Harley-Davidson Softail Fat Boy FLSTF/I Parts & Mods | MotoLoadout

Bikes / Harley-Davidson / Softail Fat Boy FLSTF/I (all years)

1991 Harley-Davidson Softail Fat Boy FLSTF/I

558 aftermarket parts are listed for the 1991 Harley-Davidson Softail Fat Boy FLSTF/I, in 28 categories.

Jump to a category (28)

Air Intake
Bodywork / Fairings
Brakes
Chain
Cosmetic / Styling
Crash Protection
Electronics
Engine Covers
Engine Rebuild Kits
Exhaust
Fender Eliminators
Foot Controls
Fuel System
Hand Controls
Handguards
Hardware / Fasteners
Kickstands / Center Stands
Levers
Lighting
Luggage Racks
Oil System
Performance
Seats
Sprockets
Suspension
Turn Signals
Wheels
Windscreens

Performance

Softail Fat Boy FLSTF/I Air Intake

Biker's ChoiceBiker's Choice Old Style CV Air Cleaner Cover For Harley 1990-1999
$63.99
Drag SpecialtiesDrag Specialties Dragtron II Air Cleaner For Harley 1988-2017
$148.68
Drag SpecialtiesDrag Specialties Premium Washable Air Filter Element For Harley
from $46.95

Protection

Softail Fat Boy FLSTF/I Crash Protection

Drag SpecialtiesDrag Specialties Big Buffalo Engine Bars For Harley
from $271.95
LindbyLindby Linbar Highway Bars For Harley
$449.95
V-Twin Mfg.V-Twin Mfg. Engine Guard With Foot Pads For Harley
from $105.74

Appearance

Softail Fat Boy FLSTF/I Bodywork / Fairings

Biker's ChoiceBiker's Choice Flatside Gas Tank For Harley Softail 1984-1999
$264.99
Biker's ChoiceBiker's Choice One Piece 4.2 Gallon Stretched Tank For Harley Softail 1984-1999
$599.99
Klock WerksKlock Werks Tire Hugger Fender Mounting Blocks For Harley Softail 1986-2017
$79.95

Chassis

Softail Fat Boy FLSTF/I Brakes

Arlen NessArlen Ness Brake Rotor Hardware Kit For Harley 1986-2026
$26.96
Biker's ChoiceBiker's Choice 11.5" Brake Rotor For Harley 1984-2022
$105.95
Biker's ChoiceBiker's Choice Chrome Rear Caliper For Harley Touring / Dyna / Softail 1984-1999
$249.99

Electronics

Softail Fat Boy FLSTF/I Electronics

AccelAccel Solid State Voltage Regulator For Harley
from $228.95
All Balls RacingAll Balls Racing 1.7kW Starter For Harley Big Twin 1989-2006
$504.74
All Balls RacingAll Balls Racing High Performance 1.4kW Starter For Harley Big Twin 1990-2006
$389.58

More categories

Accessories
Axle Sliders
Device Mounts
ECU / Tuning
Frame Sliders
Integrated Tail Lights
Mirrors
Radiator Guards
Radiators
Rearsets
Stator Covers

Drag SpecialtiesDrag Specialties Premium Washable Air Filter Element For Screamin' Eagle Harley

Softail Fat Boy FLSTF/I Engine Rebuild Kits

All Balls RacingAll Balls Racing Inner Primary Bearing And Seal Kit For Harley Big Twin 1989-2006
$58.18
CometicCometic Cam Cover Gaskets For Harley Big Twin 1970-1992
$40.33
FeulingFeuling Gorilla Rocker Shaft And Bolt Kit For Harley 1984-2001
$279.95
FeulingFeuling Titanium Valve Spring Retainer Kit For Harley
$199.95

Softail Fat Boy FLSTF/I Exhaust

Bassani ExhaustBassani FireSweep Exhaust For Harley Softail 1986-2017
$769.95
Bassani ExhaustBassani Power Curve True Dual Crossover Head Pipes For Harley
from $538.95
Bassani ExhaustBassani Radial Sweepers Exhaust With Heat Shields For Harley
from $769.95
Bassani ExhaustBassani Radial Sweepers Exhaust With Heat Shields For Harley Softail / Dyna 1986-2017
$802.95

Softail Fat Boy FLSTF/I Fuel System

All Balls RacingAll Balls Racing Carburetor Repair Kit For Harley
from $117.44
All Balls RacingAll Balls Racing Extended Fuel Mixture Screw For Harley CV Carb 1990-2006
$14.00
Biker's ChoiceBiker's Choice Keihin Carburetor Low Speed Jet For Harley 1988-2006
$8.60
Drag SpecialtiesDrag Specialties Pop-Up Low-Profile Gas Cap For Harley
from $45.95

Softail Fat Boy FLSTF/I Oil System

Drag SpecialtiesDrag Specialties Oil Plug Temp Gauge For Harley
from $33.95
Drag SpecialtiesDrag Specialties Transmission Dipstick For Harley Big Twin
$27.51
JimsJims Oil Pump Drive Shaft For Harley 1970-2000
$43.05
JimsJims Polished Oil Pump Assembly For Harley Big Twin 1970-1991
$808.65

Softail Fat Boy FLSTF/I Performance

All Balls RacingAll Balls Racing Inner Primary Bearing Upgrade Kit For Harley Big Twin 1991-2006
$28.69
AndrewsAndrews EV27 Series Camshaft For Harley EVO 1984-2000
$251.95
AndrewsAndrews EV51 Series Camshaft For Harley EVO 1984-2000
$251.95
AndrewsAndrews EV72 Series Camshaft For Harley EVO 1984-2000
$251.95

Softail Fat Boy FLSTF/I Engine Covers

Biker's ChoiceBiker's Choice Smooth Derby Cover For Harley Big Twin 1970-1999
$51.99
James GasketJames Gasket Derby And Inspection Cover Kit For Harley 1970-1998
$28.95
Joker MachineJoker Machine Finned Inspection Cover For Harley Big Twin 1970-2006
$89.05
Joker MachineJoker Machine Finned Points Cover For Harley
from $59.35

Softail Fat Boy FLSTF/I Handguards

Klock WerksKlock Werks Flare Hand Guards For Harley With Cable Clutch 1982-2026
$139.95
Klock WerksKlock Werks Ice Kolor Flare Hand Guards For Harley With Cable Clutch 1982-2026
$139.95

Memphis ShadesMemphis Shades Bullet Fairing

Softail Fat Boy FLSTF/I Cosmetic / Styling

Avon GripsAvon Head Bolt Cover Set For Harley 1986-2022
$44.10
Biker's ChoiceBiker's Choice Switch Decal For Fat Bob Dash
$15.99
Cycle VisionsCycle Visions Pyramid Fender Cover For Harley 1986-2017
$31.49
Drag SpecialtiesDrag Specialties Clutch Cable Adjuster Cover For Harley 1987-2022
$37.05

Softail Fat Boy FLSTF/I Fender Eliminators

HogWorkzHogWorkz Laydown / Curved License Plate Mount For Harley 1973-2026
$79.98

Softail Fat Boy FLSTF/I Seats

Danny GrayDanny Gray Buttcrack Solo Seat For Harley
from $299.95
Danny GrayDanny Gray Weekday 2-Up Seat For Harley
from $399.95
Danny GrayDanny Gray Weekday Solo Seat For Harley Softail 1984-1999
$299.95
Drag SpecialtiesDrag Specialties Backrest Compatible Predator 2-Up Seat For Harley Softail 1984-1999
$643.95

Softail Fat Boy FLSTF/I Windscreens

Biker's ChoiceBiker's Choice Fork Wind Deflector For Harley
$175.99
Memphis ShadesMemphis Shades OEM Replacement Windshield For Harley FL Softail W/ King Size 1990-2017
$219.95
Memphis ShadesMemphis Shades Sportshield Trigger-Lock Mount Kit For Harley
from $159.95
National CycleNational Cycle Wide Frame Heavy Duty Windshield Mount Kit For Harley
from $130.46

Biker's ChoiceBiker's Choice Rear Brake Caliper Seal Kit For Harley

from $17.99

Softail Fat Boy FLSTF/I Chain

PantherPanther Rear Drive Belt For Harley Softail 1986-1994
$273.95
S&S CycleS&S Cycle Primary Chain for Harley Big Twin 1941-2006
$125.95
Twin PowerTwin Power Primary Chain for Harley
from $89.99

Softail Fat Boy FLSTF/I Foot Controls

Arlen NessArlen Ness 10-Gauge Driver Floorboards For Harley
$449.96
Arlen NessArlen Ness 10-Gauge Shifter Rod For Harley Touring / Softail 1984-2026
$143.96
Arlen NessArlen Ness Beveled Fusion Series Driver Floorboards For Harley 1984-2025
$404.96
Arlen NessArlen Ness Deep Cut Round Shifter Rod For Harley Touring / Softail 1984-2026
$143.96

Softail Fat Boy FLSTF/I Hand Controls

AccutronixAccutronix Grips For Harley
from $126.95
Alloy ArtAlloy Art Gooden Tight Custom Riser Bushing Kit For Harley 1973-2017
$60.95
Arlen NessArlen Ness Air Trax Grips For Harley
from $62.96
Arlen NessArlen Ness Diamond Grips For Harley With Dual Cable Throttle
$80.96

Softail Fat Boy FLSTF/I Hardware / Fasteners

ColonyColony Front Axle Nut For Harley 1985-1999
$11.95
ColonyColony Rear Fender Support Mount Screws For Harley 1980-2000
$13.95
Drag SpecialtiesDrag Specialties Kickstand Spring For Harley / Buell 1991-2017
$8.43
Eastern Motorcycle PartsEastern Motorcycle Parts Primary Drain Plug And Valve Cover Gasket For Harley 1971-2000
$0.99

Softail Fat Boy FLSTF/I Kickstands / Center Stands

Biker's ChoiceBiker's Choice Jiffy Stand Leg Stop For Harley 1937-2006
$17.99
Drag SpecialtiesDrag Specialties Kickstand Extension For Harley
from $23.95
Milwaukee TwinsMilwaukee Twins Jiffy Stand Bumper Pad For Harley 1970-1999
$2.19
Milwaukee TwinsMilwaukee Twins Jiffy Stand Leg Stop For Harley 1937-2006
$7.99

Softail Fat Boy FLSTF/I Levers

Drag SpecialtiesDrag Specialties Fringed Leather Lever Covers For Harley 1984-1995
$13.95
Drag SpecialtiesDrag Specialties Pivot Pin And Clip Kit For Harley 1984-2017
$4.99
Drag SpecialtiesDrag Specialties Stealth Series Lever Set For Harley 1982-1995
$32.81
Ken's FactoryKen's Factory Next Level Perch With Helmet Lock For Harley
$199.95

Softail Fat Boy FLSTF/I Luggage Racks

Cycle VisionsCycle Visions Bagger Tail For Harley Softail
from $297.00
Drag SpecialtiesDrag Specialties Square Sissy Bar For Harley Big Twin 1984-2026
$158.31
HogWorkzHogWorkz Detachable Sissy Bar With Backrest And Luggage Rack For Harley
from $219.98
HogWorkzHogWorkz Docking Hardware Kit For Harley Softail 1984-2017
$34.98

Softail Fat Boy FLSTF/I Sprockets

Belt DrivesBDL Transmission Pulley For Harley Big Twin 1985-2006
$192.95
Milwaukee TwinsMilwaukee Twins Compensating Sprocket Cover Assembly For Harley Big Twin 1991-2006
$27.99
Milwaukee TwinsMilwaukee Twins Compensator Sprocket Retainer & Cover For Harley Big Twin 1991-2006
$49.99

Softail Fat Boy FLSTF/I Suspension

BikeMasterBikeMaster Fork Seals For Harley FX / FL 1984-2017
$15.99
Biker's ChoiceBiker's Choice 41MM Fork Seal Kit For Harley Softail 1984-2017
$42.99
Biker's ChoiceBiker's Choice Fork Bushings For Harley
from $12.99
Biker's ChoiceBiker's Choice Fork Seal Kit For Harley
from $42.99

Softail Fat Boy FLSTF/I Wheels

Drag SpecialtiesDrag Specialties Chrome Front Axle Kit For Harley
from $81.39
KuryakynKuryakyn Roman Front Axle Nut Covers For Harley 1984-2006
$52.99
Milwaukee TwinsMilwaukee Twins Dome Front Axle Nut Covers For Harley Softail 1984-2006
$22.99
Milwaukee TwinsMilwaukee Twins Front Axle & Hardware Kit For Harley 1984-1999
$57.40

All Balls RacingAll Balls Starter Clutch With Bearing For Harley Big Twin 1991-2006

$92.02

Softail Fat Boy FLSTF/I Lighting

BadlandsBadlands Hardwired Load Equalizer Module For Harley 1990-2017
$62.96
BadlandsBadlands Illuminator Run / Brake / Turn Signal Module For Harley
from $112.45
BadlandsBadlands Illuminator Run / Brake / Turn Signal Module For Harley 1985-1996
$120.56
Custom DynamicsCustom Dynamics 7" Color Changing Shark Demon Headlight For Harley
$499.95

Softail Fat Boy FLSTF/I Turn Signals

Alloy ArtAlloy Art LED Front Turn Signals For Harley Fat Boy 1990-2017
$208.95
Biker's ChoiceBiker's Choice Flat Smoked Turn Signal Lens Kit For Harley 1986-2017
$53.99
Milwaukee TwinsMilwaukee Twins Late Style Turn Signal Assembly For Harley 1986-1995
$19.99

Steering Dampers

Swingarm Spools

Towing & Hitches