WSM Yamaha 350 / 400 Piston Kit 50-540K, OE 1UY-11631-01-Y0

WSM Yamaha 350 / 400 Piston Kit 50-540K, OE 1UY-11631-01-Y0

Marsoni

M251S

$87.02

Get it in 3 business days with 1 day shipping. Friday, May 29

WSM Yamaha 350 / 400 Piston Kit 50-540K, OE 1UY-11631-01-Y0Message the size you need. ( STD 83mm, . 25mm, . 50mm, . 75mm, 1mm, 1. 5mm over) ITEM#: 50 540K PISTON KIT YAMAHA 350 87 14 OEM#: 1UY 11631 00 00, 1UY 11631 01 Y0, 5UH 11631 00 C0 BRAND: WSM FITMENTS: Make Model Year(s) Yamaha Big Bear 350 1987 1999 Yamaha Bruin 350 2004 2006 Yamaha Grizzly 350 2007 2014 Yamaha Raptor 350 2004 2013 Yamaha Warrior 350 1987 2004 Yamaha Wolverine 350 2006 2009 Yamaha YFM 350 1987 1990,1992 1995 NOTE: 83MM

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Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.

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Reviewed in the United States on February 26, 2024

Verified Purchase

Carl L. Bradley

Fort Morgan, US

★★★★★ 1

Kinda flimsy…

Thought the assembly was metal, it’s some kind of PVC.

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Reviewed in the United States on September 22, 2025