The number of leaves on a leaf spring is not the only determining factory in the amount of weight it can handle. The thickness of each leaf as well as what the leaf is made out of can affect the weight rating and performance of the spring.
The Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2570 does use 5 leaves that are 3/8" thick. Each spring is rated for 3,500lbs which is 7,000lbs per axle. This kit upgrades your suspension by allowing the axles to act independently of... view full answer...
Sorry for any confusion that may have arose, but what you want is the U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles # APUBR-35.
These are designed for 3 inch diameter, 8,000 lb axles and are compatible with the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles # RM-2460-2580. view full answer...