★★★★★ 5
Great product
Size: CF10134&CA11476
Price great. Fit perfectly
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Reviewed in the United States on May 23, 2026
Honda 450 TRX-ES 1998-2004 Piston Ring Set 1.5mm Over - 51-227-09
Marsoni
M251S
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Friday, May 29
Honda 450 TRX-ES 1998-2004 Piston Ring Set 1.5mm Over - 51-227-09WSM Honda 450 TRX ES 1998 2004 Piston Ring Set 1. 5mm Over 51 227 09 ITEM#: 51 227 09 PISTON RINGS: HONDA 450 TRX ES 1998 04 1. 5MM OVER SIZE NOTE: 91. 50MM BRAND: WSM FITMENTS: Honda TRX ES S Foreman 4X4 450 1998 2004
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4.6 ★★★★★
Based on 695 reviews
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Product Reviews
★★★★★ 5
Perfect fit and high quality.
Size: (Pack of 1)
Good product, not much to say. The product arrived quickly, looks to be of high quality construction, fit perfectly and took me only a couple of minutes to install. I love it when a product is no frills and delivers as advertised. I've used various filters from K&N before and have always had very good success with them so I will be buying more of these for sure when the time comes.
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Reviewed in the United States on November 9, 2025
★★★★★ 5
Better than most.
Size: (Pack of 1)
Looks good, perfect fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Great Filter
Size: (Pack of 1)
This fits fine. Just wish it was a little easier to change.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
More power, slightly lower (8%) MPG.
Size: (Pack of 1)
Installed on a 2.0 liter Subaru Impreza.
I drive up/down the I5 in california 3-4 times a year. For those that don't know there is about a 200 mile flat stretch where everyone runs at 75-85mph.
With various filters (FRAM, BOSCH, Subaru OEM), I would consistently get 29.8 mpg. Once I installed the K&N, I could feel the car pulling with a bit more power, but I noticed that I was getting about 27.5 mpg.
Totally worth it as the impreza is a little under powered and I don't drive many miles (6k/year) but if you are putting a lot of miles on your car, you may want to have more mpg.
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Reviewed in the United States on May 24, 2026
