Black Brass C block rear weight - 25grm - for 73mm arms (Associated B6.3 or B6.4)
Stealthy black coated brass C block hanger for the B6.4 - B6.3 73mm arms.
Not for use with the B6.2 75mm arms.
The block weighs 24gr and helps increase rear traction by adding weight at a low point under the gearbox.
Laser etched for easy identification