RPM Suspension Arms - GT2,SC10,T4 Front Blue The long-running success of RPM A-arms for the original GT has led to the release of A-arms for the updated gas truck to come from Associated the GT2. RPM GT2 A-arms were designed to solve several customer-related complaints about the stock A-arms. Foremost is durability. RPM's GT2 front and rear A-arms are designed to withstand some serious abuse! Theyve redesigned the entire front end, replacing the stock front bulkhead with a version that helps spread impact forces over a larger area at the inner hinge pin mounts. RPM front A-arms are wider at the inner hinge pin mounts by nearly 3/16 without altering suspension geometry. RPM GT2 rear A-arms are just flat-out beefy!