Wiseco Crankshaft Kit WPC144 - Suzuki RM-Z250 2004-2006

Product Description

The Wiseco WPC144 Crankshaft Kit delivers a comprehensive bottom-end rebuild solution engineered specifically for high-revving four-stroke motocross engines. Built for the Suzuki RM-Z250, each crankshaft arrives factory assembled and precision trued to original equipment specifications to restore proper rotational balance and engine performance.

Engineered for demanding track duty, the assembly features a double-forged connecting rod that utilizes refined grain flow, shot-peening, and double-drilled small-end oil passages to maximize wrist pin lubrication and reduce thermal distortion under race conditions.

Top Features: Wiseco Crankshaft Kit

• Factory assembled crankshaft precision trued to meet exact OEM runout specifications.
• Double-forged connecting rod design optimizes grain flow to maintain critical dimensional consistency.
• Shot-peened rod surface treatment relieves residual stress and prevents surface fatigue under load.
• Double-drilled small end provides additional wrist pin lubrication and cooling to minimize heat distortion.
• Kit includes the complete crankshaft assembly, dedicated main bearings, and a matching bottom-end gasket kit.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this kit include the gaskets and bearings needed to seal the crankcase?
A: Yes, the WPC144 kit comes complete with the trued crankshaft assembly, main bearings, and a bottom-end gasket kit.

Q: Does the connecting rod require additional truing before installation?
A: The crankshaft arrives factory assembled and pre-trued to OEM tolerances, ready to install directly into properly prepared engine cases.

Expert Pro-Tip: When splitting the cases for a bottom-end rebuild on these early 250F models, never pull or pry against the crankcase mating surfaces. Use a dedicated case splitter tool to prevent gouging the aluminum, and thoroughly inspect the transmission oil screen and oil pump rotors for metal debris before installing your new crank.

Recommended Pairings:

• Suzuki RM-Z250 Performance Parts & Upgrades
• Suzuki 4-Stroke Performance Parts
• Motorcycle Tools Performance Parts

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