KX105 Big Bore/Stroker

Motorcycle Kawasaki KX99

Please call to order 608-842-0680

Availability: In stock.

Regular Price: $1,750.00

Special Price: $1,475.00 Quick Overview

KX105 Big Bore / Stroker:
Fits 1998-Current KX85 and KX100


Product Description

Actual Displacement = 104.99cc

Engine Modifications Required:

Cylinder: Bore, Port, Re-plate

Power Valves: New KX100

Head: Re-chamber and CC for your fuel octane.

Crankshaft: Stroked and balanced.

Crankcase: Modified to clear stroker crankshaft


Labor for all KX105 Engine modifications

Complete Wiseco KX105 top end kit

Bottom end gaskets and seals

Clutch Washers

High PSI radiator Cap

New Spark plug

Notes: This is a total race engine build, it requires you to send us your entire engine with the kick starter and shifter.

Notes: We suggest you use a KX85 cylinder for this modification. The 85 cylinder makes much better power than the 100 cylinder.

This package flat out hauls. Many people choose to go with the Hot Rods stroker crank and a KX100 cylinder to get 105cc because it is less expensive. That is a big mistake; you get what you pay for here.

This is a full on race engine modification that is as durable as it is fast. It was developed by Rick Peterson and RPM’s from 1998-2001. During that time it was used and tested by none other than James Stewart and the American Kawasaki armature program. It is faster and more durable than the KX112, KX119, and KX121 we also built for them. We can promise you, if you don’t win with this kit it isn’t the bikes fault.

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