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Wiseco K131 Forged Piston Kit Yamaha Oversize - 2-Stroke RD350/RD400 65mm 1mm

(1973-1975 Yamaha RD350; 1976-1979 Yamaha RD400)

Manufacturer

Part Number

K131
Sale Price

$345.99

Estimated ship date Sunday, November 22

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Wiseco K131 is a complete 2-stroke forged piston kit designed for the Yamaha RD350 and RD400, featuring a 65.00mm bore (+1mm oversize) with a 54mm stroke for a displacement of 358cc. Forged from aerospace-grade aluminum alloys on Wiseco's state-of-the-art forging presses, this kit delivers the strength, precision, and performance that Wiseco has been known for since 1941.

Kit Includes:

  • (2) Forged aluminum pistons
  • (2) Piston ring sets (CD-type — not interchangeable with TD)
  • (2) Wrist pins / piston pins
  • (2) Retainer circlips

Key Features:

  • Forged aerospace aluminum construction for superior tensile strength and extended service life
  • Dedicated forgings with optimized strength-to-weight ratio via additional lightening operations
  • Engineered, forged, and machined in the USA (Mentor, OH)
  • Designed specifically for the 2-stroke Yamaha RD350/RD400 engine architecture
  • High-quality rings, wrist pins, and circlips matched to Wiseco piston specifications

Specifications:

  • Bore: 65.00mm (+1mm oversize)
  • Stroke: 54mm
  • Displacement: 358cc
  • Ring Type: CD (2559CD)
  • Part Number Cross-Reference: 393M

Whether you're rebuilding a vintage street bike or preparing a performance engine, the Wiseco K131 piston kit provides everything needed for a complete and reliable top-end rebuild.

Products specifications

Fits

1973-1975 Yamaha RD350; 1976-1979 Yamaha RD400

Lowest price anywhere! Amazing service and fast shipping!

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cheapest price on the web thanks for the great value, shipping was <br>a little slow but it was free and came with a tracking number<br><br>Thanks<br>

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Nice product for a nice price!

Always great prices, fast shipping and great communication. Will order again from Autoplicity. Order#17421.

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