KFX 507 Stealth Big Bore/Stroker

Please call to order 608-842-0680

Availability: In stock.



Quick Overview

KFX 507 STEALTH Specifications:
Fits 2008-Current KFX450


Choose Option:

We modify your cylinder

Exchange cylinder and crankshaft: $150.00

“Bolt on” – Includes cylinder and crankshaft: $ 600.00

Installed and Blueprinted: $ 500.00


Product Description

Bore: Yes

Stroke: Yes

Actual Displacement = 506.13cc

Engine Modifications Included:

Cylinder: OEM Cylinder bored and plated with Ceramic Nickel Bore coating

Fuel Required: 91 – 100 octane – Options Available

Piston: Wiseco Piston – Max Power Extreme Coated

Crankshaft: OEM crank, lightened, stroked, and balanced with custom rod.

Crankcase/Head: No modification required

Notes: Counter balance shaft must be machined to clear rod.

Notes: Cylinder and crankshaft cores are subjet to inspection before core credit can be given.


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