🛠️ Hot Rods Stroker Crankshaft Kit – Yamaha YFZ450 (2004–2008, 2012–2013)

Unlock serious power gains with this proven stroker kit for your YFZ450. The Hot Rods CBK0146 stroker crankshaft kit increases displacement while allowing you to reuse your stock piston, making it the most affordable and effective engine upgrade for trail, dunes, or racing.

✅ What’s Included

• Stroker crankshaft

• Main bearings & crankshaft seals

• Complete engine gasket set for full installation

📦 Fitment

• Yamaha YFZ450 (2004–2005): +4.4mm stroke, increases displacement to 470cc using stock piston

• Yamaha YFZ450 (2006–2008, 2012–2013): +3.0mm stroke, increases displacement to 471cc using stock piston

• ⚠️ Does NOT fit YFZ450R or YFZ450X models

🛡️ Warranty Info
Backed by Hot Rods' limited manufacturer warranty. Warranty excludes failures due to improper installation, lack of lubrication, or over-revving.

🔑 Key Features

• Stroker crankshaft upgrade with stock piston compatibility

• Complete bottom end refresh kit: crank, gaskets, bearings & seals

• +4.4mm stroke for 2004–2005 models = 470cc

• +3.0mm stroke for 2006–2008, 2012–2013 = 471cc

• Factory-assembled and ready to install

• Built with Hot Rods 4140 chromoly connecting rod

• Ideal for high-performance builds or rebuilds

• Weight: 12.75 lbs