3/8" x 24TPI thread on one end and 1/2" x 20TPI on the other end

and high flow S&S cylinder heads

Works great welded to a sissy bar

SIZE: 1/2-20 x 3 Hex Bolt

and anti-corrosion attributes

Rear Caliper Bracket for Rigid Models with 11-1/2 inch Rotors - 1" Axle - Raw Subcategory_Fork Components 3/8" x 24TPI thread onQuickly and securely mount your four piston caliper on a rigid frame motorcycle with a heavy duty, USA made rear caliper bracket from Lowbrow Customs. Our caliper bracket is designed for use on rigid (hardtail) motorcycles with an 11 1 2 inch diameter brake rotors with 1" axles. Perfect for Harley Davidson Sportsters and custom Big Twins. This works with any caliper with 3. 5" center to center mounting holes such as Mid USA, Performance Machine, and