Hot Racing RVO27SMF06 Aluminum Front Multi-Mount Long Travel Rocker Arms (Blue) Made by Hot Racing; Hot Racing is a United States based company; parts are sourced from Chinese producers All Hot Racing upgrade parts are direct replacements for stock components; additional parts are not required Hot Racing part number RVO27SMF06; UPC 083745464412 This item works with: Traxxas E-Revo 5603 5605 5608, Revo 3.3 5309, Summit