CP Pistons Piston Kit for Kawasaki Ninja 400 18-20

CP Forged Piston Kit - Kawasaki Ninja 400 2018-2020 - 70mm, 13.0:1

CP Pistons SKU: CPPMX3042
Price
Regular price $618.44
Regular price $669.50 Sale price $618.44
8% OFF
In Stock – Ready to Ship
Shipping calculated at checkout.

This CP Pistons piston kit is a forged, standard-bore replacement for the 2018-2020 Kawasaki Ninja 400. It runs a 70mm standard bore and a 13.0:1 compression ratio for strong, reliable power. Includes pistons, rings, pins, and locks.

Specifications

Application Kawasaki Ninja 400
Years 2018-2020
Bore 70 mm (standard)
Stroke 51.8 mm
Displacement 399 cc
Compression 13.0:1
Includes Pistons, rings, pins, locks
Part Number MX3042

Shipping

  • In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Backordered items ship as soon as stock lands — contact us for lead times.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30-day returns on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
  • Installed or used parts can’t be returned — confirm fitment before you install.
  • Special orders and custom items are final sale.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy

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