Bullet Proof Designs Clutch Cover. Unmatched Durability and Performance. Introducing the Bullet Proof Designs Clutch Cover, built from solid block of 6061 aluminum, the BPD clutch cover is three times thicker than competitive covers. Engineered for the toughest conditions, the clutch cover is designed to withstand the rigors of extreme riding and racing, providing riders with peace of mind and exceptional performance. Available in: Silver: Equipped with a Silver oil fill cap. Black Hardcoat Anodize: Equipped with a Silver oil fill cap. Key Features: Solid 6061 Aluminum Construction: Precision-machined from a single block of 6061 aluminum, this clutch cover offers superior strength and durability compared to traditional covers.