Try a set of putnam green/green brushes with trinity red springs for a fast flowing high speed track, and trinity purple springs for a tight track that needs more torque of f of the corners. If your woried about wear and maintanence use a green/blue set of brushes. It will wear a little better and you probably not notice performance. For ultra wear and low maintanence run Reedy 767 brushes with the trinity red/green springs it will last 10 runs if broken in right and cleaned properly.
www.victoryhobbies.com Greenbay, Wisconsin