5 Best Clamshell Cover for Snowmobile Trailer

If you own a snowmobile trailer with a clamshell lid, you know how crucial reliable gas struts and a protective cover are. A failing strut can make lifting the heavy lid a struggle, while a poor cover leaves your sled exposed to snow, ice, and road grime.

This guide reviews five top products to help you choose the best clamshell cover components for your setup. We cover gas struts in various weight ratings and durable snowmobile covers, so you can find the perfect match for your trailer and sled.

ARANA Gas Struts 36 inch 250Lb – Heavy-Duty Lift

The ARANA Gas Struts 36 inch 250Lb are built for the heaviest clamshell lids. With a force of 1112N (250 lb) per strut, a pair can handle lids weighing between 220 and 275 lbs. The extended length of 35.98 inches and compressed length of 20.31 inches make them suitable for trailers with side lengths of 60 inches or more. These struts use 13mm ball ends, which are common on many snowmobile trailer lids.

You’ll appreciate the smooth, controlled lift they provide, eliminating the need to struggle with a heavy lid. They are interchangeable with OEM numbers ST360M250 and ST360M25013, so they can replace worn-out factory struts. Just be sure to measure your lid’s weight before purchasing, as these are designed for the upper end of the weight spectrum. If your lid is lighter, you might find them too strong.

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• Interchange number – Compatible with the following OEM Numbers: ST360M250; ST360M25013
• Warm tips – ARANA 36 inch spring shocks will be suitable for heavy lids, with lid weight between 220-275 lbs, side length ≥ 60 inch; Note: do measure the lid weight or check the oem number to buy correct items
• Wide applications- ARANA 36" gas struts are widely used on your snowmobile trailer, sled trailer cap, trailer lid, heavy-duty truck cover, trap door, tonneau cover those need long-size replacement struts, as long as the lid weight is between 225-275 pounds
• Size info – Extended Length A (Center-to-Center): 35.98" (914 mm), compressed length B (Center-to-Center): 20.31" (515 mm); Force 1112N/250Lb Per Strut, 2 Struts Per Pair
• About installation & support – super long and super strong, could only be compressed after installing successfully; once you need any installation guide or any unfit problem, in-time help or 365 days replacement support will be provided if let ARANA know

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ARANA C16-22632 36 inch 185Lb – Balanced Lift

The ARANA C16-22632 36 inch 185Lb Gas Struts are a perfect match for medium-weight clamshell lids. With a force of 823N (185 lb) per strut, they are designed for lids weighing between 160 and 200 lbs and side lengths of at least 54 inches. The extended length of 36.3 inches and compressed length of 20.01 inches provide a good range of motion for most trailers. They are compatible with OEM number C16-22632, making them a direct replacement for many Triton trailer models.

These struts offer a balanced lift that isn’t too aggressive, so your lid opens smoothly without slamming. They are also versatile enough for truck tonneau covers, floor hatches, and trap doors. The 13mm ball ends are standard, but you should verify your existing brackets. If your lid is on the lighter side of the weight range, these struts will provide effortless operation without excessive force.

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• 36" 185 pound gas struts – Compatible with the following OEM Numbers: C16-22632, C1622632
• 36 inch struts for heavy lids – ARANA 36 inch spring shocks will be suitable for heavy lids, with lid weight between 160-200 lbs, side length ≥ 54 inch; Note: do measure the lid weight or check the oem number to buy correct items
• 36 inch gas struts – ARANA 36" gas struts are widely used on clamshell triton snowmobile trailer, heavy sled trailer cap, truck cover, tonneau cover, floor hatch, trap door, outdoor well pit, shorestation boat parts as long as the lid weight is between 160-200 pounds
• 36 inch gas spring – Extended Length A (Center-to-Center): 36.3 inch (922 mm), Compressed Length (Center-to-Center): 20.01" (508 mm); Force 823N/185Lb Per Strut, 2 Struts Per Pair
• About installation & support – super long and super strong, could only be compressed after installing successfully; once you need any installation guide or any unfit problem, in-time help or 365 days replacement support will be provided if let ARANA know

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CONFUTURY Snowmobile Cover 900D – Heavy-Duty Protection

The CONFUTURY Snowmobile Cover 900D is built to protect your sled when parked outdoors. The extra-thick 900D oxford fabric with a 6-layer nano coating provides excellent waterproofing, keeping snow and rain off your machine. Two adjustable windproof buckles (front and rear) with 196-inch straps allow you to secure the cover tightly, even during windy conditions. Air vents on both sides help reduce condensation and prevent wind lift.

This cover fits most snowmobiles up to 130 inches long and 51 inches wide, so it’s a universal option for many sleds. The elastic hem and reinforced seams add durability. While it’s designed for storage, the windproof buckles also make it suitable for trailering, though it’s not a replacement for a full trailer cover. If you need a heavy-duty cover for your snowmobile when it’s off the trailer, this is a solid choice.

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• Heavy Duty Snowmobile Cover Waterproof Outdoor: Snow mobile cover is made of extra thick 900D oxford fabric with 6 layers of Nano material coating inside,so the inner layer is extra smooth, soft and resilient.It won't scratch your snowmobiles.Anti-UV: Ultraviolet-proof(SPF) up to 85+.Double-needle sewing process at the joints, adding waterproof strips, able to resist 12000 MM water pressure.It is better in tear resistance and UV resistance.
• Protection For Your Trailerable Snowmobile: 2 Adjustable and elastic fixed windproof buckles (located at the front and rear), the polaris snowmobile cover can be tightly fixed on your snowmobile even in stormy weather, making your snow mobiles safe, reliable and dry.The snowmobile accessories that truly resist the wind, rain, sun and snow.Protect your trailerable snowmoblie outdoor storage from rain, UV radiation, dust, scratches, rips, bird droppings, fallen leaves and etc.
• 4 Upgrade Details: ①Extra long windproof buckle(196 IN / 500 CM)，the snowmobile sled covers can withstand strong winds during transport.②Air Vents On Both Sides:Keep the air circulation in the snowmobile covers and the seat dry, prevent frost. ③Front and Rear Elastic Hem Design:The cover fit snugly on the snowmobile,enhance wind resistance of snowmobile covers. ④4 Reflective Strips:Provide night protection and prevent collisions. ⑤The "Front" Marking:Easier to distinguish the front of the cover.
• Universal Cover Fits Most Snowmobiles: Designed to fit snowmobiles measuring 130" L x 51" W x 48" H, with a universal fit for most models on the market. Please measure your snowmobile length before purchasing—measure from the front to the back, excluding the skis.
• More Services: In addition to receiving a premium sled ski cover,you will also have an extra portable storage bag for easy storage and portability.We have a 60 days replacement service.If you have any questions, please email us.NOTE:After driving your snowmobile, let the engine cool down before covering it.

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CONFUTURY Snowmobile Cover 420D – Reliable Trailering

The CONFUTURY Snowmobile Cover 420D offers a balance of protection and affordability. Made from 420D oxford fabric with a 6-layer nano coating, it provides reliable waterproofing for your snowmobile. The cover includes two adjustable windproof buckles with 196-inch straps, allowing you to secure it firmly during transport. Air vents on both sides promote airflow, reducing moisture buildup and wind flutter.

This cover fits most snowmobiles measuring up to 130 inches long and 51 inches wide, making it a universal option for many models. The elastic hem and reinforced stitching add to its durability. While the 420D fabric is lighter than the 900D version, it still offers good protection for trailering and outdoor storage. If you need a cover that can handle highway speeds, the windproof buckles are a key feature.

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• Heavy Duty Snowmobile Cover Waterproof Outdoor: Snow mobile cover is made of extra thick 420D oxford fabric with 6 layers of Nano material coating inside,so the inner layer is extra smooth, soft and resilient.It won't scratch your snowmobiles.Anti-UV: Ultraviolet-proof(SPF) up to 85+.Double-needle sewing process at the joints, adding waterproof strips, able to resist 12000 MM water pressure.It is better in tear resistance and UV resistance.
• Protection For Your Trailerable Snowmobile: 2 Adjustable and elastic fixed windproof buckles (located at the front and rear), the polaris snowmobile cover can be tightly fixed on your snowmobile even in stormy weather, making your snow mobiles safe, reliable and dry.The snowmobile accessories that truly resist the wind, rain, sun and snow.Protect your trailerable snowmoblie outdoor storage from rain, UV radiation, dust, scratches, rips, bird droppings, fallen leaves and etc.
• 5 Upgrade Details: ①Extra long windproof buckle(196 IN / 500 CM)，the snowmobile sled covers can withstand strong winds during transport.②Air Vents On Both Sides:Keep the air circulation in the snowmobile covers and the seat dry, prevent frost. ③Front and Rear Elastic Hem Design:The cover fit snugly on the snowmobile,enhance wind resistance of snowmobile covers. ④4 Reflective Strips:Provide night protection and prevent collisions. ⑤The "Front" Marking:Easier to distinguish the front of the cover.
• Universal Cover Fits Most Snowmobiles: Designed to fit snowmobiles measuring 130" L x 51" W x 48" H, with a universal fit for most models on the market. Please measure your snowmobile length before purchasing—measure from the front to the back, excluding the skis.
• More Services: In addition to receiving a premium sled ski cover,you will also have an extra portable storage bag for easy storage and portability.We have a 60 days replacement service.If you have any questions, please email us.NOTE:After driving your snowmobile, let the engine cool down before covering it.

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ARANA 36 inch 200lb Gas Struts – Versatile Lift

The ARANA 36 inch 200lb Gas Struts are designed for lids weighing between 180 and 220 lbs. With a force of 890N (200 lb) per strut, a pair provides ample lifting power for medium-heavy clamshell lids. The extended length of 36.02 inches and compressed length of 19.88 inches fit trailers with side lengths of 60 inches or more. These struts use 10mm ball studs, so check your brackets for compatibility.

You’ll find these struts make lifting a heavy lid feel effortless, reducing strain on your back and arms. They are suitable for snowmobile trailer caps, truck covers, trap doors, and more. The 200 lb rating sits between the 185 lb and 250 lb options, offering a middle ground for lids that are too heavy for standard struts but not quite at the maximum weight. Just ensure your lid falls within the specified range for optimal performance.

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• Basic Info: Extended Length A (Center-to-Center): 36.02" (915 mm), compressed length B (Center-to-Center): 19.88" (505 mm), Force 890N/200Lb Per Strut, Fit: 10mm ball studs brackets, 2 Struts Per Pair
• Multi-scenario Usage: ARANA 36" gas struts are widely used on your snowmobile trailer, sled trailer cap, trailer lid, heavy-duty truck cover, trap door, tonneau cover those need long-size replacement struts, as long as the lid weight is between 180-220 pounds
• Application Range: ARANA 36 inch spring shocks will be suitable for heavy lids, with lid weight between180-220 lbs, side length ≥ 60 inch; Note: do measure the lid weight or check the oem number to buy correct items
• Lift Heavy Easily: Are you tired of struggling to lift heavy beds or doors? Maybe it's time to think about ARANA Gas Struts, just one finger away from effortlessly lifting 200 lbs
• About installation & support – super long and super strong, could only be compressed after installing successfully; once you need any installation guide or any unfit problem, in-time help or 365 days replacement support will be provided if let ARANA know

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Buyer’s Guide: What to Consider

Choosing the right clamshell cover components involves matching weight, size, and material to your trailer. These factors ensure safe, effortless operation.

• Lid Weight: Measure your lid's total weight (including accessories) to select gas struts with the correct force rating. Undersized struts won't lift; oversized ones may damage hinges.
• Strut Length: Extended and compressed lengths must match your trailer's hinge-to-mount distance. Standard 36-inch struts work for many clamshells, but always verify center-to-center measurements.
• Mounting Hardware: For gas struts, look for 13mm or 10mm ball studs that fit your existing brackets. For covers, reinforced windproof buckles and elastic straps keep the cover secure during transport.
• Force Rating: Heavier lids benefit from higher force struts (e.g., 250 lb per pair). Lighter lids need lower force to avoid slamming. Check the manufacturer's recommended weight range.
• Material & Ventilation: For snowmobile covers, 900D or 420D oxford fabric with nano coating offers waterproofing and durability. Air vents reduce wind flutter and moisture buildup.

Conclusion

Selecting the right clamshell cover components comes down to matching your lid’s weight and size with the correct gas struts, and choosing a durable, waterproof cover for your sled. The ARANA struts offer precise force options for heavy-duty lifting, while CONFUTURY covers protect your snowmobile from the elements.

For most clamshell trailers, we recommend starting with the ARANA 36-inch 250 lb struts if your lid is on the heavier side, or the 185 lb version for lighter lids. Pair either with a CONFUTURY 900D cover for complete protection.