Megan Racing has now developed control arms for the Mazda crowd that will help attain a higher level of control and performance. Constructed of a Reinforced Rubber Bushing , these control arms remain light weight while being able to take the punishment of competition and extreme conditions. A 3-Stage powder-coating process the control arms will easily combat the elements for years of performance.Specifications & Features: Measurements: Adjustable threaded rod diameter: 5/8"Center hole to center hole:- Minimum Arm Length: 22 5/8"- Maximum Arm Length: 23 13/16" - Max. Length assuming 5/8" minimum thread engagement.- Inner diameter of center hole: 7/16" and 1/2"- Bushing width on both ends: 2 1/2"Adjustable threaded rod diameter: 5/8"- 150% Harder that stock bushings- Made with high-strength and anti-cracking rubber material- Rubber viscosity is around 2000KGS