I do have an option for you, but we do not recommend using lift blocks on trailers due to movement/damage they can cause overtime in trailer suspension.
Instead since you already have the spring over the axle I recommend using the Correct Track # RR23QX which will allow you to raise your trailer by either 1-1/4" or 2-1/4", and are easy to install as they just bolt on to your existing hangers. view full answer...
We don't offer a block type lift, but we do offer some options that would increase your trailer's ride height.
If your 2018 Dutchmen Voltage Triton 3551 Toy Hauler has 7K rated axles, and the leaf springs are currently mounted under the axles, you can use an over/under kit like # K71-385-00 to relocate the leaf springs to the top of the axle. This will gain you the 3 inch diameter of the axle beam plus the thickness of the spring pack as a height increase.
The other option, although it... view full answer...
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