Product Details: Outfit your semi truck to be Ready for the Road Ahead™ with increased brake power, with the Haldex 3030 Long Stroke Gold Seal Piggyback Brake Chamber Kit. With a compact design, this replacement chamber stacks on top of another, allowing the two to work in tandem to create large amounts of brake power. Manufactured with top-tier materials to tolerate rough or heavy duty working conditions. FleetPride is your First Click in Heavy Duty®.