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The Firestone Ride‑Rite rear 25C replacement air helper spring is a double‑convoluted bellows rated for up to 1600 lbs. at 100 psi and designed to fit rear applications about 5.25 in. in height. It uses a 1/4 in. NPT air inlet and restores the ability to adjust spring support by adding air, which helps keep the vehicle level, reduce inter‑leaf friction and limit bottoming out when towing or carrying uneven loads. Ride‑Rite kits commonly install using factory holes and include necessary components.
Firestone Ride-Rite Replacement Air Helper Spring Rear 25C (W217606959)
