• Honda Navi 125cc Big bore kit *In Stock* - Howling Moto
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Honda Navi 125cc Big Bore Kit – Bolt-On Cylinder Upgrade

Honda Navi 125cc Big Bore Kit – Bolt-On Cylinder Upgrade

1130136-SSS +YUMINASHI PISTON

$230.50 USD
$230.50 USD
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93 in stock

Honda Navi 125cc Big Bore Kit – Bolt-On Performance Upgrade

The only bolt-on big bore kit purpose-built for the Honda Navi. No cylinder boring, no case modifications — just a direct drop-in upgrade that pushes your Navi's displacement to a full 125cc for real gains in horsepower, torque, and top speed.

A ScooterSwapShop exclusive — in stock and ships today.

What's Included

  • 53mm Cast Iron Cylinder
  • 53mm Yuminashi Piston
  • Piston Rings
  • Piston Pin
  • Piston Clips
  • Gaskets: Cylinder Head, Base & Timing Chain Tensioner

Specifications

  • SKU: 1130136-SSS +YUMINASHI PISTON
  • Displacement: 125cc (53mm bore)
  • Piston Brand: Yuminashi
  • Cylinder Material: Cast Iron
  • Weight: 3.0 lbs
  • Fitment: Honda Navi

Recommended Pairing

For maximum performance gains, pair this kit with the Yuminashi Camshaft and the Polini Carb Kit.

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