See: MOD

Matt Olson Designs have introduced new aluminum and brass arm inserts for the Team Associated B6.1 , T6.1 and SC6.1. The arm inserts are made from high-quality 7075-T6 aluminum and brass and feature three hole positions. The 1 and 2 holes use the same locations as the standard moulded inserts while the 0 hole is between the 1 hole when flipped back and forth. The aluminium arm inserts are 1g heavier than plastic ones and great cross over for those looking for durable all-in-one inserts. The brass arm inserts are available in two versions,14g and 20g inserts which means 10 and 16 grams heavier then plastic inserts respectively. Both are designed to be use in outdoor tracks or carpet surface and allow to ultra-fine lower shock mount adjustment. They affect also the suspension, grip and CG characteristics.