GPM TRX4021XB Brass Outer Portal Drive Housing Technical Upgrade  [TRX4021XB]

Technical Notes on the Brass Portal Housing

The GPM TRX4021XB Brass Outer Portal Drive Housing is manufactured to add concentrated mass at the wheel ends, improving rotational inertia and tyre contact under low speed crawl conditions. Using brass increases wheel-end weight by approximately 64 grams per housing, which helps the TRX4 maintain traction in deep ruts and steep approaches without altering driving geometry.

Packing includes

• BRASS OUTER PORTAL DRIVE HOUSING - 2pcs
• Stainless Steel Cap Head Screw 2.5×10 - 12pcs
• Stainless Steel Cap Head Screw 2.5×8 - 4pcs

Original Name / Part No:

Made by brass to increase the weight of each wheel of 182 grams to stabilize the wheel, enlarge the angle of crawling, especially when the car is dig into the low lying area landscape, grab the ground firmly and smoothly drive back to level.