Momentum 376TH rear overhang scrapes driveways and dips

Owner reportFrame

Symptoms: Momentum 376TH and 376THS toy haulers sit low behind the axles. Owners compare that rear shape to the Solitude 374TH, which uses the same floorplan, and to the longer Momentum 397TH. Threads name the pattern on a 2016 376TH a buyer was considering, a 2017 376TH, a 2019 376TH, and 2021 and 2022 376THS coaches. Owners report the rear frame and the factory skid bars scraping on driveways, ferry ramps, gas-station exits, and road dips. In July 2017, an owner of a nearly new Momentum 376TH wrote that a factory triangle skid broke at the weld, the two legs folded flat, and the rear body panel tore open on a hilly road. A 2017 376TH owner wore through the factory skid bars in the first year. A 2019 Solitude 374TH owner reported several drags over seven years of full-timing. One reply says several units were seen with the rear wall torn loose. That sentence is the writer's observation, not a count of how often it happens.
Likely causes: The rear of these floorplans is a drop frame for a low storage bay and a swing-down door, so the overhang behind the axles is close to the ground. Owners say the factory flat skids and the welded triangle skids are light. A weld can break, and the plate can wear through. When the skid folds away, the rear body panel hangs below the frame crossmember and can catch the road. The threads treat this as the shape of the floorplan on builds from about 2016 through 2022, not one model year.
Common fixes: Owners have added heavy-duty rollers, a steel skid plate, or hard plastic pads at the rear frame. They enter grades, ferry ramps, and driveway dips slowly and at an angle, and they look under the rear frame for deep road rash before buying. Rollers can dig into soft dirt. One owner warns against letting the hitch and the rear skids carry the whole trailer with the tires off the ground. These are owner modifications, not a factory procedure, and this page does not pick a product.
DIY difficulty: Looking under the rear frame is something owners describe doing in a driveway. Welding rollers or a skid to the frame is shop work in these threads.
Parts needed: No Grand Design part number is named. Owners describe rollers, a steel skid plate, or hard plastic pads they had added to the rear frame.
Warranty notes: A 2017 owner asked a dealer to repair worn skid plates during other warranty work and was told the skids were not covered. The dealer installed rollers instead. On an independent forum, a Grand Design staff member wrote that the rear-drag comments would be passed along to the product team. That reply is not a repair program.

Sources

Owner reportFrame

Symptoms

Momentum 376TH and 376THS toy haulers sit low behind the axles. Owners compare that rear shape to the Solitude 374TH, which uses the same floorplan, and to the longer Momentum 397TH. Threads name the pattern on a 2016 376TH a buyer was considering, a 2017 376TH, a 2019 376TH, and 2021 and 2022 376THS coaches. Owners report the rear frame and the factory skid bars scraping on driveways, ferry ramps, gas-station exits, and road dips. In July 2017, an owner of a nearly new Momentum 376TH wrote that a factory triangle skid broke at the weld, the two legs folded flat, and the rear body panel tore open on a hilly road. A 2017 376TH owner wore through the factory skid bars in the first year. A 2019 Solitude 374TH owner reported several drags over seven years of full-timing. One reply says several units were seen with the rear wall torn loose. That sentence is the writer's observation, not a count of how often it happens.

Likely causes

The rear of these floorplans is a drop frame for a low storage bay and a swing-down door, so the overhang behind the axles is close to the ground. Owners say the factory flat skids and the welded triangle skids are light. A weld can break, and the plate can wear through. When the skid folds away, the rear body panel hangs below the frame crossmember and can catch the road. The threads treat this as the shape of the floorplan on builds from about 2016 through 2022, not one model year.

Common fixes

Owners have added heavy-duty rollers, a steel skid plate, or hard plastic pads at the rear frame. They enter grades, ferry ramps, and driveway dips slowly and at an angle, and they look under the rear frame for deep road rash before buying. Rollers can dig into soft dirt. One owner warns against letting the hitch and the rear skids carry the whole trailer with the tires off the ground. These are owner modifications, not a factory procedure, and this page does not pick a product.

DIY difficulty

Looking under the rear frame is something owners describe doing in a driveway. Welding rollers or a skid to the frame is shop work in these threads.

Parts needed

No Grand Design part number is named. Owners describe rollers, a steel skid plate, or hard plastic pads they had added to the rear frame.

Warranty notes

A 2017 owner asked a dealer to repair worn skid plates during other warranty work and was told the skids were not covered. The dealer installed rollers instead. On an independent forum, a Grand Design staff member wrote that the rear-drag comments would be passed along to the product team. That reply is not a repair program.