The Mittler Bros. Grand National Hat Drive Flange is a high-strength steel drive flange with a 7″ OD hat design for Grand National rear hub applications. The hat-style flange provides proper wheel support without requiring a separate brake rotor hat — simplifying the brake and wheel assembly while maintaining the correct wheel offset and support geometry. Machined from high-strength steel at 4.72 lbs.
Cap, bolts, and O-rings are included — everything needed for a complete installation. Unlike the standard steel drive flange (SKU 1400-006), no additional hardware purchase is required. For aluminum drive flange options, see the Standard 6061 (SKU 1400-033-6061) and Ultimate 7075 (SKU 1400-033-7075). Made in the USA.
