The Brood B-Mag AE B6/DR10 Magnesium Idler Shaft is an easy way to reduce weight without sacrificing strength in both stock and modified applications - including No Prep Drag. The MAO coated AZ61 Magnesium Alloy option parts weigh in at .6 grams each, making them lighter than the stock parts. But Magnesium offers superior dampening which will allow the material to absorb impacts without rebound, helping to maintain optimal gear mesh at all times. Compatible with any Team Associated vehicle that uses ASC91132.