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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
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Description
V-FORCE V-Force 3 membraan systeem - Honda CR80/85RThe unique design of the VForce reed valve system features double the reed tip surface over a conventional reed valve design. This provides two major advantages: 1) The reed petals only travel half the distance as a conventional reed valve design to achieve the same airflow. 2) Since the reed petals only need to travel half the distance of a conventional reed valve design, there is a greater chance of them being fully opened, as well as a better
- The unique design of the VForce reed valve system features double the reed tip surface over a conventional reed valve design. This provides two major advantages: 1) The reed petals only travel half the distance as a conventional reed valve design to achieve the same airflow. 2) Since the reed petals only need to travel half the distance of a conventional reed valve design, there is a greater chance of them being fully opened, as well as a better chance of sealing when they are "closed". A reed petal never truly "closes" in a classic sense, as it is always in motion. Considering that an engine running at 8,000 RPM causes a reed petal to open and close 133 times per second, another advantage of the VForce system becomes clear. Since the petals only travel half the distance, they generally last longer as they experience less wear than the reed petals in a conventional reed valve design.
- Double the reed tip surface over a conventional reed valve design
- Improved low-end performance, stronger mid-range, and longer top-end
- Higher efficiency due to reduced reed petal movement
- More airflow means more horsepower
- Reduced reed petal wear
- Screw-free design eliminates the risk of screws entering the motor
- Screw-free design enables super-fast reed petal changes
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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
4.8 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Portable, comfy, and super sturdy
I LOVE THIS! I bought this trifold mattress for guests and occasional use, and it’s honestly become one of my favorite things. It unfolds smoothly, lays completely flat, and the foam is firm enough to support you but still comfortable to sleep on. When it’s folded, it’s super easy to move and doesn’t take up much space. The cover is easy to clean, and it doesn’t lose its shape after sleeping on it multiple nights. Great for guests, kids’ sleepovers, or even stretching and lounging. Definitely worth it.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Good trifold foldout
Color: White, Size: S06-Single
Great as an emergency pullout. Very comfortable, easy to setup and carry with the handles. Good as extra support as an exercise cushion too.
Mattress is a little hard but better than being too soft. Fabric could be softer or thicker, but not too bad quality.
May be good for a child's nap time. Fits good in closet for storing or accent ottoman in room.
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Reviewed in the United States on December 23, 2025
★★★★★ 1
DO NOT BUY.
Update: Amazon refunded me the price of the mattress as I can’t really send it back now that it isn’t compressed and we do not live anywhere near a UPS store. I reached out to the seller as it is listed as having a 5 year warranty. The seller has so far only initially offered me a 10% refund, so not honoring their warranty at all. I have refused this and asked for either a full replacement or a replacement section for the one that is defective. We will see if they stand by their warranty!
The package came SO compressed that one of the foam inserts never recovered. We opened it according to instructions, let it sit for 72 hours, and edges of foam were all so stuck together they did not rise properly. I had to take every piece out of both covers, manually pull apart the edges, and then let it rise again. We tried everything to get the third insert to be like the others- put it in a warm environment, put it in the bathroom where there is some more damp air, and still isn’t like the other two. It feels different as well- softer than the other two pieces. It’s like it is a totally different foam. It doesn’t fill out the cover completely and it is consequently very uncomfortable and not useable as one whole section is softer and thinner than the rest. I would like to return it but not sure how now that it is not compressed. Would not buy this product again. Very frustrating.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Firm but not hard
Color: Grey, Size: 4inch-Tw"
I sleep on this on the floor about 50% of the time because it’s so much more comfortable than my actual mattress. It doesn’t leave me with back or hip pain, it doesn’t sink so you never feel the ground like with an air mattress. It folds up to store under my real bed or I can fold in into a chair if I need. I did have to use a hair dryer to fluff up a few of the corners because they were taking a long time after opening but that’s to be expected.
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Reviewed in the United States on April 22, 2026
★★★★★ 4
Good mattress for company
Color: White, Size: S06-Single
This mattress is great for when you have a crowd coming to visit. It's easy to move around and it's pretty comfortable. I took it camping and slept well. It's not great as a chair unless you lean the back against a wall. Single bed sheets fit on it nicely.
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Reviewed in the United States on March 31, 2026