Over 185,000 Parts and accessories in stock

Free Same-Day Shipping on orders over $89

Tech Support Backed by Years of Riding Experience

Over 185,000 Parts and accessories in stock

Free Same-Day Shipping on orders over $89 Tech Support Backed by Years of Riding Experience

1991 Harley-Davidson Softail - FXST KB Performance

1991 Harley-Davidson

Softail - FXST

Drive Type: Belt
Front Tire Size: MH90H-21
Rear Tire Size: 130/90H-16
Spark Plug: RN12YC
Drive Belt Width: 1 1/2 in.
Drive Belt Teeth: 132
Front Sprocket/Pulley Teeth: 32
Rear Sprocket/Pulley Teeth: 70
Fork O.D.: 41mm
Oil Filter: 307852
Battery: GYZ20HL
Engine Type: Evolution Style
Throttle Cable Length: 30 in.
Idle Cable Length: 30 in.

For reference only, please consult your owner’s manual to confirm your sizes

Turn off | | Remove

Possible Fit (0)

Results per Page

Viewing Results 1 - 3 of 3

Filter

Viewing Results 1 - 3 of 3

exact fit

KB Performance Forged Piston for Select Harley-Davidson Motorcycles
$285.57

Free Shipping

2 Options available

Add to compare
exact fit

KB Performance Forged Piston for Select Harley-Davidson Motorcycles
$285.57

Free Shipping

3 Options available

Add to compare
exact fit

KB Performance Forged Piston Kit (w/Screamin Eagles 95cc Heads) for Select Harley-Davidson Motorcycles
$307.29

Free Shipping

Part #: 133395S Mfg Part #: KB662C.STD

Add to compare

Results per Page

Viewing Results 1 - 3 of 3

1
Go To Page
- Page 1

7 years of Top-Rated customer service!

Bizrate's Circle of Excellence winner!

Copyright © 2026 Dennis Kirk, Inc. - All Rights Reserved.

Order / Questions? Call Us Mon-Fri: 7am - 8pm, Sat: 8am - 5pm, Sun: 9am - 5pm CST: 1-800-969-7501

Pickup Store Hours are Mon-Fri: 9am - 7pm, Sat: 9am - 5pm, Sun: 10am - 5pm CST

Trusted by riders for over 50 years ★★★★☆ 4.0+ Google Rating - Same Day Shipping Available

s