Seat Pan Bungs

Seat Pan Bungs – 1" OD Weld-On Mounting Bungs for Custom Seat Pans

Building your own custom steel seat pan? Our Seat Pan Bungs are the ideal solution for mounting seat springs, front pivots, and other hardware to thin or lightweight seat pans. Designed with a larger 1" outer diameter, these bungs help distribute load more effectively across thinner metal surfaces, preventing distortion or stress damage over time.

With a low-profile height of just .400", these bungs allow your seat to sit lower on the frame—perfect for clean, tight-fitting builds. Precision-machined from cold rolled steel and tapped to accept either 3/8"-16 or 5/16"-18 hardware, they’re a must-have for fabricators and custom bike builders.

Product Features:

1" O.D. cold rolled steel construction for strength and stability

.400" height keeps seat pan mounted low to the frame

Tapped to 3/8"-16 or 5/16"-18 thread size

Great for mounting seat springs or front pivot kits

Ideal for custom seat pans or larger thin mounting surfaces

Sold individually

Made in the USA

Whether you're mounting a solo seat or fabricating a custom setup, these seat pan bungs give you the durability, fitment, and flexibility you need.