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Wiseco Yamaha YZ 490 1984-1990 Piston 1.50 mm

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$246.80 $234.46
(You save $12.34)
STG SKU:
W|2457-546M08850|1

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Features:

  • Forged from high-silicon aluminum alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Feature forged pistons, rings, wrist pins, and circlips
  • Cylinder sleeves must be purchased separately
  • Now you can own the same race parts as all the top race teams
  • These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
  • When blow-by starts to increase on other pistons and power starts to fade, Wiseco Race Series parts continue sealing and performing
  • Have additional features over standard Pro-Lite parts
  • Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
  • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
  • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
  • Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.

Specifications:

  • Product Name: Piston
  • Piston Material: Forged / Aluminum Alloy
  • Bore Size: 88.50 mm
  • Bore - Oversize: +1.50 mm / +1,50 mm
  • Displacement: 487 cc
  • Stroke Length: 82.00 mm / 82,00 mm
  • Units: Each
  • Riding Style: Off-Road

Fitment:

YearMakeModel
1984YamahaYZ 490
1985YamahaYZ 490
1986YamahaYZ 490
1987YamahaYZ 490
1988YamahaYZ 490
1989YamahaYZ 490
1990YamahaYZ 490