Redcat Gen8 Aluminum Rear Outer Portal Housing Set. These portal boxes are an aluminum option for the Redcat Gen8, or any model equipped with Redcat Portal Axles (RER11289). These upgrades will offer improved strength and durability, and will eliminate the flex associated with the stock plastic parts. Plus, these will add approximately 36 grams of unsprung weight to the axle to help increase stability and overall performance. Package includes two portal boxes and hardware.