VERTEX Top End Piston Kit - 66.35 mm - Yamaha YZ250/X VTK22584B-2
Part Number: 09103134Description
A worn top end compromises power delivery and throttle response on your YZ250/X. This VERTEX piston kit restores OEM performance with precision-cast components engineered for durability and reliable break-in, getting you back to riding with confidence.
The T-5 heat treatment and molybdenum disulfide skirt coating reduce friction during the critical break-in phase while extending piston life—essential for both trail riders and those pushing hard at the track.
- 66.35 mm bore diameter
- Gravity-cast aluminum alloy
- 18% silicon content
- T-5 heat treatment
- Molybdenum disulfide coating
- Includes piston rings
- Wrist pin and circlips
- Top end gasket set
- Wrist pin bearing included
- Yamaha YZ250/X fitment
- OEM replacement specification
- Bolt-on installation
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