Replacement Piston — 3.508" piston diameter, 4-1/4" stroke, +0.010" bore oversize

DRAG SPECIALTIES Replacement Piston — 3.508" piston diameter, 4-1/4" stroke, +0.010" bore oversize – 79-84 Big Twin, 80-84 Touring, 82-84 FXR, 84 Police

DRAG SPECIALTIES
DS-750721
750721-BX-LB1
OEM-quality replacement pistons supplied in kits with wrist pins and clips; accepts OEM or Hastings rings.
Hurry! only 3 items left in stock.
€98.01
€109.43
Save €11.42
VAT included
local_shipping In stock, ships in 20-25 days

Add to Compare
Add to Wishlist

Replacement piston engineered for reliable OEM-fit performance and long service life. 🔧

  • OEM quality cast aluminum alloy construction
  • Some fitments feature a coating that extends piston life, reduces friction and allows for cooler running engines
  • Ideal for OEM replacement and economical performance
  • Kits include two pistons, wrist pins and clips
  • Accepts OEM or Hastings rings (order separately)

Simple to install and suitable for a wide range of OEM applications.

: DS-750721
In Stock

Data sheet

Brand
DRAG SPECIALTIES
Bore - Oversize
+0.010"
Bore Size
3,498"
Compression Ratio
8.0:1
Harley Family
FXR
Touring
Vintage Big Twin

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Electra Glide Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Big Twin 1981
Harley Davidson Electra Glide Big Twin 1982
Harley Davidson Electra Glide Big Twin 1983
Harley Davidson Electra Glide Belt Drive Big Twin 1984
Harley Davidson Electra Glide Classic Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Classic Big Twin 1981
Harley Davidson Electra Glide Classic Big Twin 1982
Harley Davidson Electra Glide Classic Big Twin 1983
Harley Davidson Electra Glide Touring 1983
Harley Davidson Electra Glide Touring 1984
Harley Davidson Electra Glide Classic Touring 1984
Harley Davidson Tour Glide Touring 1980
Harley Davidson Tour Glide Touring 1981
Harley Davidson Tour Glide Touring 1982
Harley Davidson Tour Glide Touring 1983
Harley Davidson Tour Glide Classic Touring 1980
Harley Davidson Tour Glide Classic Touring 1981
Harley Davidson Tour Glide Classic Touring 1982
Harley Davidson Tour Glide Classic Touring 1983
Harley Davidson Tour Glide Classic Touring 1984
Harley Davidson Sturgis Big Twin 1980
Harley Davidson Sturgis Big Twin 1981
Harley Davidson Sturgis Big Twin 1982
Harley Davidson Big Twin 1983
Harley Davidson Big Twin 1984
Harley Davidson Super Glide Big Twin 1981
Harley Davidson Super Glide Big Twin 1982
Harley Davidson Super Glide Big Twin 1983
Harley Davidson Super Glide Big Twin 1984
Harley Davidson Fat Bob Big Twin 1979
Harley Davidson Fat Bob Big Twin 1980
Harley Davidson Fat Bob Big Twin 1981
Harley Davidson Fat Bob Big Twin 1982
Harley Davidson Super Glide II FXR 1982
Harley Davidson Super Glide II FXR 1983
Harley Davidson Super Glide II FXR 1984
Harley Davidson Disc Glide Big Twin 1984
Harley Davidson Sport Glide Police Police 1984
Harley Davidson Low Glide FXR 1984
Harley Davidson Super Glide II FXR 1982
Harley Davidson Sport Glide FXR 1984
Harley Davidson Low Rider Big Twin 1979
Harley Davidson Low Rider Big Twin 1980
Harley Davidson Low Rider Big Twin 1981
Harley Davidson Low Rider Big Twin 1982
Harley Davidson Low Rider Big Twin 1983
Harley Davidson Low Rider Big Twin 1984
Harley Davidson Wide Glide Big Twin 1980
Harley Davidson Wide Glide Big Twin 1981
Harley Davidson Wide Glide Big Twin 1982
Harley Davidson Wide Glide Big Twin 1983
Harley Davidson Wide Glide Big Twin 1984