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Wiseco

Wiseco 90-06 Yamaha YFM/YFB250 8.71 (4675M07150) Piston Kit

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CODE: WISPK1055
$285.95
$256.99 Backorder — not currently in stock Sold out
BACKORDER — not currently in stock

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Premium materials produce the best sealing technology available exceeding O.E.M. standards. 2-Stroke: Wiseco top end gasket kit; Dedicated forging; Superior strength/weight ratio utilizing Aerospace alloy; Race-proven designs; Chosen by top race teams, in all forms of racing; CNC machined; Optimal cam shape and profile for peak HP and service life; Premium top end needle bearing; Precision-machined, highest-quality materials for strength and reduced friction; High-performance ring set; Extended life and sustained power; Highest-quality alloy pin; Consistently true and durable. 4-Stroke: Wiseco top end gasket kit; Premium materials produce the best sealing technology available, exceeding O.E.M. standards; Dedicated forging; Superior strength/weight ratio utilizing Aerospace alloy; Dome design; Improved flame travel; Chrome plated piston pin; Horizontal slot pin oiling; Reduced friction/scuff resistant; Pressure seal groove; Maximum ring seal; Armor Glide Skirt-Coated available for select models; Dedicated Rings; Maximum compression and oil control.

  • Improved tensile strength of forged material optimizes strength and service life
  • Designed and built for each specific 4-stroke powersports engine
  • Dedicated forgings allow for optimized strength-to-weight ratio
  • Includes high-quality piston rings, wrist pin(s), and circlips
  • Engineered, forged, and machined in the USA in Mentor, OH

This Part Fits:

Year Make Model Submodel
1992-1998 Yamaha YFB250 Timberwolf 2x4 Base
1994-2000 Yamaha YFB250FW Timberwolf 4x4 Base
2000-2004 Yamaha YFM250 Bear Tracker Base
2007-2009 Yamaha YFM250 Big Bear Base
2005-2006 Yamaha YFM250 Bruin Base