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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
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Description
Ultimate All Metal PAX Bundle (Gen 2)Built for Real Use This isnt just a nozzleits a complete PAX system. Every component is designed to work together to give you better flow, cleaner pours, and a more reliable setup. Why Upgrade Faster pours: Improved flow and control Less mess: Spill resistant design More reliable: Durable billet components Complete system: No guesswork or mismatched parts Whats Included PAX Nozzle Assembly & Seal Cap All metal construction (no plastic) Designed for
Built for Real Use
This isn’t just a nozzle—it’s a complete PAX system. Every component is designed to work together to give you better flow, cleaner pours, and a more reliable setup.
Why Upgrade
- Faster pours: Improved flow and control
- Less mess: Spill-resistant design
- More reliable: Durable billet components
- Complete system: No guesswork or mismatched parts
What’s Included
PAX Nozzle Assembly & Seal Cap
- All-metal construction (no plastic)
- Designed for durability and controlled pouring
- Seals your container when not in use
Spout Adapter
- Fits standard and capless fuel fillers
- Threaded to allow use with cap for storage
- May not fit all double-flapper systems
PAX Collar
- Replaces factory plastic collar
- Precision-machined for a secure fit
- Built for long-term durability
Shipping Spacer
- Used when converting container for non-flammable liquids
- Helps ensure proper sealing if FMD is removed
- Yes… even for “thrilling” liquids like water
Standard Identifier Cap
- Protects your setup when not in use
- Keeps dirt and debris out
Important Notes (Read This)
- Designed for Gen 2 RotoPax containers (with white FMD)
- We do not recommend modifying your container
- Do not remove flame safety devices
If you remove the FMD:
- A gap will form when storing the nozzle
- This can cause leaks and damage the Viton gasket
- The included Shipping Spacer helps address this issue for non-flammable use
Compatibility & Use
- Not intended for use in water containers (metal interaction may cause corrosion)
- Fitment may vary depending on vehicle filler neck design
Disclaimer
RotoPax does not endorse or authorize Ai13 products. Ai13 is not affiliated with or sponsored by RotoPax and assumes no liability for injuries caused by use of Ai13 products. This is not an official RotoPax replacement.
Complete System. No Guesswork.
Everything in this bundle is built to work together—so you’re not piecing together parts or dealing with inconsistent performance.
Upgrade once. Fix the pour for good.
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 21 reviews
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Product Reviews
★★★★★ 5
Great fit!
Size: Large, Color: Beige
Most comfy undies THANK YOU!
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Reviewed in the United States on May 22, 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