Lippert 129745 -- 4-Leaf Double-Eye Trailer Leaf Spring, 2,200 lb Capacity
A genuine Lippert OEM-grade replacement spring built to handle the suspension demands of RV trailers and utility trailers. Four progressive steel leaves, a standard double-eye profile, and a 25-1/4 in unloaded eye-to-eye length make this a direct drop-in for compatible Lippert and MORryde-era suspension hangers. Rated at 2,200 lb per spring.
The Lippert 129745 double-eye leaf spring is engineered as a direct replacement for worn or damaged trailer springs in single- and tandem-axle setups common on travel trailers, fifth wheels, toy haulers, and utility trailers. The double-eye design -- a formed loop at each end of the main leaf -- drops straight into standard hanger brackets and equalizer assemblies without modification.
Four progressive steel leaves work together to absorb road shock and distribute load evenly across the axle. As load increases, additional leaves engage, giving the suspension a firmer but controlled response under heavy cargo or rough roads. The result is reduced body roll, better tire contact, and a more stable tow at highway speeds.
Rated for 2,200 lbs of load capacity per spring, supporting axle ratings up to 4,400 lbs when used in matched pairs.
Progressive multi-leaf design engages additional leaves as load increases, balancing ride comfort with load control.
Formed loops at both ends of the main leaf for bolt-through mounting in standard hanger brackets and equalizers.
Unloaded eye-to-eye length of 25-1/4 in matches OEM hanger spacing on compatible Lippert and Dexter axle systems.
This spring is sized for trailers using Lippert axle systems with a 25-1/4 in center-to-center hanger spacing. It is commonly found on travel trailers, fifth wheels, toy haulers, cargo trailers, and horse trailers running Lippert or comparable Dexter-spec suspension hardware. The 1-3/4 in leaf width is a standard dimension for this capacity class.
The 129745 shares its eye-to-eye length, leaf width, and leaf count with OEM Lippert spring specs for the 2,200-lb class. When replacing springs, always replace in axle pairs -- mixing old and new springs on the same axle creates uneven load distribution and accelerates wear on both the new spring and the axle components.
Leaf springs wear gradually and the signs are easy to overlook until the handling changes noticeably. Common indicators that a spring needs replacement include:
This listing is for the leaf spring assembly only. Center bolt, U-bolts, hanger bolts, eye bolts, and rubber or nylon bushings are not included and must be sourced separately. Confirm your existing hardware dimensions before installation.
After installation, inspect leaf springs every 3,000 to 5,000 towing miles or once per season. Check for shifted leaves, cracked metal, and worn bushings at the eyes. Apply a light coat of spray lubricant to the inter-leaf contact surfaces annually to reduce squeaking and slow rust progression. Torque the center bolt and U-bolts to the axle manufacturer's specification after the first 50 miles of loaded travel.