✨ Christmas Special: Get 35% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Super Saver 80 Flh-fx Piston Set .020 Oversize 1978 / 1984 Fl 1978 / 1984 Fx 1979 / 1983 Flt 1982 / 1983 Fxr Guaranteed [jTpQMx4F]

$43.99 $140.99 -69%

High-Performance Piston Set for Harley Davidson The 80 FLH-FX Piston Set is designed to enhance the power and efficiency of your Harley Davidson motorcycle. Crafted with precision and featuring the Keith Black 390 hypereutectic material, this piston

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Super Saver 80 Flh-fx Piston Set .020 Oversize 1978 / 1984 Fl 1978 / 1984 Fx 1979 / 1983 Flt 1982 / 1983 Fxr Guaranteed [jTpQMx4F]

High-Performance Piston Set for Harley Davidson

The 80 FLH-FX Piston Set is designed to enhance the power and efficiency of your Harley Davidson motorcycle. Crafted with precision and featuring the Keith Black 390 hypereutectic material, this piston set is built to withstand the demands of high-performance engines. With an oversize .020 bore and an impressive 8.3:1 compression ratio, this set is a perfect fit for a range of Harley Davidson models, including the FL, FX, FLT, and FXR series.

Key Features and Specifications

Experience the power of the Kieth Black 390 hypereutectic material, which provides superior strength and durability. This piston set includes all necessary components for a seamless installation, such as rings and the permanent steel molded alloy. The 8.3:1 compression ratio optimizes fuel efficiency and power output, ensuring that your Harley Davidson performs at its best. Additionally, the kit is compatible with various models from 1978 to 1984, making it a versatile choice for enthusiasts and professionals alike.

Practical Uses and Benefits

This piston set is not just for show; it's built for performance. With its oversize .020 bore and high compression ratio, it delivers improved engine performance and increased power. The inclusion of rings ensures a proper seal, reducing wear and tear on your engine. To ensure the longevity of your investment, it's recommended to run your engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to properly break-in the new pistons and rings. The accessory items included (16-0622, 16-0029, 60-0167) and replacement parts (11-1365) further enhance the overall value and functionality of this comprehensive kit.

What Our Customers Say

February 5, 2026

Absolutely no complaints!

The best I have managed to find out there so far, for sure.

- Taliesin Q..

February 5, 2026

Absolutely no complaints!

A very smart and fulfilling purchase.

- Luella M..

February 5, 2026

Absolutely no complaints!

A perfect product, and a very, very, very perfect purchase.

- Mabon P..

Write a Review

You Might Also Like

Discover more great products from our collection.

TC HD CORRECTOR MED-DARK

TC HD CORRECTOR MED-DARK

(473)
$99.99 $319.99 -69%
Lika Behar Labradorite Cuff

Lika Behar Labradorite Cuff

(506)
$64.99 $207.99 -69%
Led Pure 520 w 1.507 µmol/s

Led Pure 520 w 1.507 µmol/s

(812)
$57.99 $185.99 -69%
Small Decorative Knob

Small Decorative Knob

(894)
$99.99 $319.99 -69%
Sunshine Through Clouds

Sunshine Through Clouds

(65)
$36.99 $118.99 -69%
After Hours Crew Neck Bra

After Hours Crew Neck Bra

(476)
$23.99 $76.99 -69%

Copyright 2026 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY