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Description
SuperATV POLARIS RZR RS1 FRAME STIFFENER / GUSSET KITSKU : FS P RS1 01 Brand: SuperATV Description: Why We Make It When you upgrade your Polaris RZR RS1 with a big lift, bigger tires, and some extra gear, your frame will start to buckle with every bump and bounce. Thats why you need SuperATVs frame stiffener. It adds much needed reinforcement to your frame so it doesnt bend with all the extra weight. Go BIG With a frame stiffener installed, you can go as big as you want. Get a portal gear lift, monster
SKU : FS-P-RS1-01
Brand: SuperATV
Description:
Why We Make It
When you upgrade your Polaris RZR RS1 with a big lift, bigger tires, and some extra gear, your frame will start to buckle with every bump and bounce. That’s why you need SuperATV’s frame stiffener. It adds much needed reinforcement to your frame so it doesn’t bend with all the extra weight.
Go BIG
With a frame stiffener installed, you can go as big as you want. Get a portal gear lift, monster tires, and whatever else you need and hit the trails and mud holes as hard as you want. With a SuperATV frame support — made of 4.5 mm heavy-duty steel plating — everything will stay ridged and aligned. Your RS1 won’t just be a massive lawn ornament that’s too fragile to take around the block — your UTV will be the ultimate trail monster.
NOTE: When running the Polaris RZR RS1 Frame Stiffener / Gusset Kit with the Polaris RZR RS1 Full Skid Plate, the frame stiffener will replace the front section of the skid plate.
When you upgrade your Polaris RZR RS1 with a big lift, bigger tires, and some extra gear, your frame will start to buckle with every bump and bounce. That’s why you need SuperATV’s frame stiffener. It adds much needed reinforcement to your frame so it doesn’t bend with all the extra weight.
Go BIG
With a frame stiffener installed, you can go as big as you want. Get a portal gear lift, monster tires, and whatever else you need and hit the trails and mud holes as hard as you want. With a SuperATV frame support — made of 4.5 mm heavy-duty steel plating — everything will stay ridged and aligned. Your RS1 won’t just be a massive lawn ornament that’s too fragile to take around the block — your UTV will be the ultimate trail monster.
NOTE: When running the Polaris RZR RS1 Frame Stiffener / Gusset Kit with the Polaris RZR RS1 Full Skid Plate, the frame stiffener will replace the front section of the skid plate.
WARNING: This product can impact machine operation. Customer and/or user is responsible for ensuring that this product is compatible with their machine as currently configured, properly installed, and understands any impact this product has or might have on the machine's operation.
Free shipping in the lower 48 states.
Features:
- Strengthens the weak spots on your RS1's frame
- Provides the strength you need when adding portals, big lifts, or bigger tires
- Perfect for hard work and hard riding
- Adds support and stability
- Made of 4.5 mm heavy-duty steel plating
- Powder coated for durability
Fitment:
- Polaris RZR RS1 : 2018+
Installation Instructions: Instructions - FS-P-RS1
SS 10/6/22
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1548 reviews
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Product Reviews
★★★★★ 5
They’re fantastic!!!!
Size: X-Large, Color: Multicoloured E-(5-pack)
My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly.
The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
Comfortable and cool. Does not ride up.
Color: 01-multicolour (4-pack), Size: Medium
Extremely comfortable. Stays cool. Ample coverage. Quality material. They do not creep up. I ordered a medium which I generally take a size small. I have reordered and will reorder again to add more colors to my collection.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Great Value for Cool Thigh Protection
Color: 02-multicolour (4-pack), Size: XX-Large
For the price, I'm not sure there are better women's boxer shortlettes anywhere. I've tried more expensive brands, and for quality and cooling, these are right up there. I have other bamboo viscose undies that still get gross when I get sweaty in the summer, but these, with the large mesh panel, really help wick away a lot of that moisture, keeping you feeling dryer and cooler. I find that the leg openings are comfortable and don't roll up! and the waist band doesn't dig, nor does it roll down. These do not provide any compression, and I wasn't looking for any. I just wanted some cooling, thigh protecting women's boxers that wouldn't break the bank. These are them! Bonus- I've washed them and put them in the dryer (following their instructions), and they haven't shrunk; they look about the same and are nice and soft.
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Reviewed in the United States on July 28, 2025
★★★★★ 4
Great for the entire family but expensive
So far so good. The brand of boxers we had been buying changed their style and construction so we needed to find an alternative. These have held up well so far to multiple weeks of frequent washing and wearing from the entire family. We did size up from the usual 6/M we normally buy and ordered large to prevent the legs from rolling up which worked out great. Our daughter likes the length and how soft the fabric is for wearing under skirts and gym shorts and liners stay put without moving or leaking as another reviewer mentioned. Our son says they are comfortable and fit well being just supportive enough without being constrictive. We all agree that there seems to be not enough fabric in the back as they tend to be much tighter across the backside than the front and that also causes the waist band to ride lower in the back than the front. These have better seam placement than some brands we tried with no seam across the lady bits and no seam down the middle of the back side so they are more much comfortable but the cost is also much higher and that is why we're only giving it 4 stars. These will stay in the rotation until we find something cheaper that both us and the kids like.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Pregnant lady review! Soft, comfortable, cool.
Color: 03-multicolour (4-pack), Size: Large
So soft, comfortable and cool. I'm pregnant and I've gained weight in my legs. I love wearing dresses but my thighs were rubbing together too much. These are perfect to wear under dresses. I also wear them under my bibs at work and it keeps me from getting overheated but I don't have to worry about whether or not my underwear show since they just look like shorts. I wish these came in maternity. I just keep them below my belly. I'll be buying more for sure.
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Reviewed in the United States on April 8, 2026
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