


WSM Yamaha 400 Grizzly / Kodiak Piston Kit '00-'08, 50-543K, OE 5GH-11631-00-00
Marsoni
M251S
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Friday, May 29
WSM Yamaha 400 Grizzly / Kodiak Piston Kit '00-'08, 50-543K, OE 5GH-11631-00-00Yamaha 400 Grizzly Kodiak Piston Kit Please leave a note with size at checkout: ( STD 84. 50mm, . 25mm, . 50mm, . 75mm, 1mm ) Brand : WSM Item #: 50 543K OEM #: 5GH 11631 00 00 Note: 84. 50 Make Model CC HP Year Yamaha Grizzly 400 2007 Yamaha Grizzly 400 2008 Yamaha Kodiak 400 2000 Yamaha Kodiak 400 2001 Yamaha Kodiak 400 2002 Yamaha Kodiak 400 2003 Yamaha Kodiak 400 2004 Yamaha Kodiak 400 2005 Yamaha Kodiak 400 2006 For more information on our
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4.1 ★★★★★
Based on 1701 reviews
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Product Reviews
★★★★★ 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.
WAS THIS REVIEW HELPFUL?YesReportShare
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.
WAS THIS REVIEW HELPFUL?YesReportShare
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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
★★★★★ 5
Very faint smell for two days, but did not disturb my sleep.
I am 120 lbs and this feels to me more of a medium firm foam. It is very comfortable for laying on my back, but it hurts my hips when I lay on my side for a while. The cover is nice and velvety, and looks to be sturdy. It had a slight smell for two nights, but very faint enough that I was able to sleep on it the day it was delivered. The smell never woke me up, as the smell was very faint. The foam expanded to full size all over within hours, and has no uneven places.
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Reviewed in the United States on December 9, 2025
★★★★★ 3
MAYBE MOLDY
it’s a good little bed for if your ina pinch but it produces moisture whenever it’s in a cold room so it could attract mold eventually just a fair warning
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Reviewed in the United States on May 21, 2026
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