Wiseco Forged Series Piston Kit with Gaskets - Honda TRX350/ATC350X (1985 - 1989) - 81.50mm Bore (+0.50mm Oversize) - 4 - Stroke - Dune Goons

Wiseco Forged Series Piston Kit with Gaskets - Honda TRX350/ATC350X (1985-1989) - 81.50mm Bore (+0.50mm Oversize) - 4-Stroke

$239.95
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Wiseco Forged Series Piston Kit with Gaskets - Honda TRX350/ATC350X - +0.50mm Oversize

Premium Wiseco Forged Series piston kit for vintage Honda TRX350 and legendary ATC350X three-wheeler. +0.50mm OVERSIZE (81.50mm) for lightly worn cylinders!

⚠️ Oversize Piston - Cylinder Boring Required

This piston is +0.50mm oversize. Cylinder boring to 81.50mm is required for proper fit.

Kit Includes

  • Forged Series Piston
  • Ring Set
  • Wrist Pin
  • Wrist Pin Retainer Set
  • Complete Gasket Kit

Piston Specifications

  • Bore Size: 81.50 mm (+0.50mm Oversize)
  • Piston Diameter: 81.45 mm
  • Stroke Length: 68.00 mm
  • Compression Ratio: 10.25:1
  • Material: 2618 Aluminum Alloy
  • Skirt Coating: Non-Coated

Engine Specifications

  • Displacement: 350.4cc
  • Engine Type: 4-Stroke
  • Weight: 1.65 lbs

Fitment

  • Honda TRX350D: 1987-1989
  • Honda TRX350: 1986-1987
  • Honda ATC350X: 1985-1986

📦 Shipping Information

In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch

Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks

Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.

Questions? Contact us—we respond within 24 hours.

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