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1989 Kawasaki KX500

Athena Big Bore Piston - 290cc

Retail: $180.39
$169.99
You Save: $10.40 (6%)
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Athena Big Bore Piston - 290cc - Main
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Product Description

Athena has developed a wide range of forged pistons specifically for use in the off-road / ATV market and manufactured using a revolutionary computerized technology originating from GP & F1 racing. Athena forged pistons offer the best solution in terms of performance and reliability thanks to redesigned squish areas, modified compression characteristics and advanced surface treatments, which improve their fluidity.

  • Replacement oversized piston for the 83 mm Athena Big Bore Kit.
  • Specially designed, high-performance Cast-Lite, flat top piston.
  • Piston is sold complete with rings, wrist pins and circlips.
  • Note: Piston and directly related parts ONLY; all other parts sold separately.

Additional Specification:

  • For 83 mm big bore cylinder.
  • Compression rated: 13.5:1.
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Verified Purchaser
Location: San Diego, CA USA
Easy replacement piston for the big bore kit. Comes with piston rings and circa clips. Use the circa clips provided. Athena does extensive R&D. The clips are deceiving but they are effective
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Total Questions (2)
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mike88 Location: ludowici, ga
1-2 of 2
mike88 Over 3 years ago Location: ludowici, ga
Whats the compresson ratio?
for a 2006 rmz 250
MotoSport Staff Expert
Over 3 years ago Location: USA
The compression ration will be slightly higher than stock.
SoulMan Over 4 years ago
What's included?
Does this include new rings, circlips etc.?
MotoSport Staff Expert
Over 4 years ago Location: PDX
This is going to come with Piston, rings, circlips, and pin.
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