The Mittler Bros. Standard Drive Flange 5×5 — 6061 Aluminum is a precision-machined aluminum drive flange for Grand National floater rear-end hub applications. Machined from 6061 aluminum, it provides the 5×5 bolt circle for wheel attachment — the standard bolt pattern used in circle track and GN racing applications — at a significant weight savings over steel.
Includes cap, bolts, and O-rings — everything needed for a complete installation. For maximum performance, the Ultimate Drive Flange in 7075 aluminum (SKU 1400-033-7075) offers increased strength-to-weight ratio. For a steel version, see SKU 1400-006 (24-spline, 5×5). Made in the USA.








