Hot Rods 0921-0123 4080 Crankshaft Assembly – Yamaha YFM/YXR Series 2002-2008

Enhance your Yamaha YFM or YXR series with the Hot Rods 0921-0123 4080 Crankshaft Assembly, designed for 2002-2008 models. This OEM-stroke crankshaft, crafted from 4140 steel with a 84.00 mm stroke and 660 cc displacement, offers a durable, factory-assembled solution with proven Hot Rods connecting rods and bearings. We price-match reputable online stores—contact us to ensure you get the best deal!

✅ What’s Included

• Hot Rods Crankshaft Assembly (0921-0123 4080)

• Crankshaft

• MAG crankshaft bearing

• Connecting rod, top-end bearings, and crankshaft webs

• Installation-ready design

• No additional hardware included (uses existing components)

🔑 Key Features

• OEM stroke design (84.00 mm) for 660 cc displacement

• Constructed from 4140 steel for heavy-duty performance

• Factory assembled and trued to OEM specifications

• Meets or exceeds OEM in performance and durability

• Completely rebuildable with genuine Hot Rods connecting rods and bearings

• Gears machined to DIN Class 9 or higher quality

• Connecting rod side clearance: 0.40 mm - 0.80 mm

• Compatible with Yamaha YFM 660 FG/FG Grizzly 4x4 (2007-2008), YFM660F Grizzly 4x4 (2002-2006), YXR66F Rhino 660 (2004-2007)

• Suitable for UTV/ATV riding style

• Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

📦 Fitment (Highlights)

• Yamaha:

  • 2002-2006 YFM660F Grizzly 4x4

  • 2004-2007 YXR66F Rhino 660

  • 2007-2008 YFM 660 FA/FG Grizzly 4x4

• Notes: Always verify fitment by year, make, model, and engine specifications before ordering. UPC: Not specified.

💲 Price & SKU

• Retail Price: $686.95

• SKU: 0921-0123 / 4080

• Note: We price-match reputable online stores—contact us for the best price!

• Weight: 15 lbs (package weight)

• Dimensions: 16.41" (H) × 8.85" (L) × 6.65" (W) (package dimensions)

• Availability: In stock. Ships next business day

🛡️ Warranty

• Contact Hot Rods for warranty details (proof of purchase required)

🔧 Installation Tips

• Torque main bearing bolts to Yamaha specs (~20-25 ft-lbs, consult manual).

• Ensure proper crankcase alignment during installation.

• Verify balance and clearance with connecting rod after assembly.