RPM Front A-arms for the Typhon 4x4 3S BLX are everything you're looking for in a set of replacement A-arms. RPM's version are more adjustable, more durable and lighter than stock. Adjustability: RPM has added a second shock mount to the outside of the original stock shock mount, adding adjustability and improving trackability. The outer shock mount lowers the ride height, increasing stability on all surface types. A lower ride height also means faster corner speeds. Durability: Molded from a trademarked blend of indestructible, engineering grade nylons, you can't get much tougher! RPM also redesigned the shape of the A-arms while retaining stock suspension geometry to help improve survivability for those "oops" moments. Lightweight: With stronger materials and improved designs, RPM was able to cut out unnecessary weight while still offering suspension components that are unparalleled in performance and durability. RPM Front A-arms are more than 5 grams lighter per A-arm than their stock counterparts!