Extra Info:

Ride-Rite Leaf Air Spring Lift Spacers (2374) by Firestone?. Quantity: 2 per Pack. Lifted & Lowered Lift spacers can be used with most Ride-Rite? air helper spring kits – NOT Coil-Rite? or Sport-Rite? kits. The spacer needs to be the same length as the amount of lift applied to the axle on which the air helper spring is being installed.

Notes: Not for Coil-Rite? or Sport-Rite? Kits.
Specifications:
Height: 6″
Size: 11.5″-12.5″ between Brackets
Features:
Tested to outperform all comparable products on the market
Made from premium materials to endure years of abuse
Designed for perfect fit and function
Manufactured in the United States
Firestone? Industrial Products Company, a respected worldwide manufacturer of the highest quality air springs, was founded in 1936. The first Pneumatic Suspension Device, better known as the Firestone Airide? Air Spring, was designed and patented by the company in 1938. Since that year Firestone has become a leader in innovation and expansion. Firestone offers a large assortment of high-grade air springs for light vehicles, buses, heavy duty trucks, trailers, rail cars, and industrial applications.