Fiend invest bmx forks forks take a lot of abuse and we all know the importance of one that is well constructed the new invest fork features fully heat treated chromoly tubing throughout with a 1pc machined steerer tube with integrated bearing race for use with all 4545 headsets and a 6061 alloy compression bolt the 6mm thick investment cast drop out and lower leg junction provide the ultimate strength while maintaining a clean look and the 26mm offset helps keep the front wheel under the rid