Heated Grips Switch, Part 4015738 It is designed and tested by Indian Motorcycle Engineers to ensure quality, durability and optimal performance through tens of thousands of miles of on road testing to ensure the part can withstand the life of your cycle. It's also undergone environmental, vibration, temperature cycling, humidity, salt spray, and water immersion testing. Spend less time wrenching and more time out riding. As America's first motorcycle company that started in 1901, don't settle for anything less than OEM quality.