Dynamic Engine Factory

2020-2022 YAMAHA YZ450F 102MM BIG BORE PISTON & 6MM STROKER CRANKSHAFT KIT

$2,249.95

This kit offers significant gains in horsepower and torque with a 6MM Stroker crankshaft and 102MM Bore utilizing a 14.5 CR Piston. This kit increases your engine’s displacement to an impressive 546cc. We designed this kit to be a simple drop-in solution, no case modifications required, no spacer plates or longer chains needed!

1 in stock (can be backordered)

Description

This kit offers significant gains in horsepower and torque with a 6MM Stroker crankshaft and 102MM Bore utilizing a 14.5 CR Piston. This kit increases your engine’s displacement to an impressive 546cc. We designed this kit to be a simple drop-in solution, no case modifications required, no spacer plates or longer chains needed!

  • No Crankshaft Core Required!
  • Athena 102mm Cylinder & Gaskets Sold Separately!

Key Features:

  • Stroke Increase: Adds 6MM to the engine stroke, making it 66.8MM
  • Connecting Rod: Includes a high-performance Crank Works or CP Carrillo connecting rod, engineered to withstand extreme engine conditions and cylinder pressures
  • Balanced Crank: The crankshaft is heavy metal balanced to accommodate the new reciprocating weight of the assembly, no vibrations!
  • Assembled and Trued: The crankshaft is pre-assembled and trued for optimal performance
  • Crank Pin: Welded to prevent twisting
  • Drop-In System: Designed for simple installation without the need for any other modifications
  • Piston and Cylinder Bore Size: 102MM
  • Piston Features:
    • 14.5 Compression Ratio Piston with Vertical Gas Ports
    • Titanium Nitride Treated Rings
    • DLC-coated Wrist Pin
    • Circlips

Important Notes:

  • Does NOT include the cylinder or gaskets! These are sold separately; please check our other product listings [here]
  • Please inspect piston skirt clearance to the counterbalance shaft.
  • If you have any questions about this kit, please contact us

Additional information

Weight 14 lbs
Dimensions 20 × 12 × 12 in

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Make Model Year
Yamaha YZ450F 2020 - 2022