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New Crankshaft Main Bearing And Seal Kit Compatible With 2004-2013 Yamaha Yfz450 Le Se Bill Balance

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K022A2
OEM PART NUMBERS:
• Yamaha: 93306-30633-00 (Crankshaft Main Bearing — primary, 2x required per engine)
• Yamaha: 93306-30409-00 (Crankshaft Main Bearing — alternate part number)
• Yamaha: 93102-30443-00 (Crankshaft Oil Seal — primary)
• Yamaha: 93102-25331-00 (Crankshaft Oil Seal — alternate part number)
• Catalog Kit Reference: K022

SPECIFICATIONS:
• Type: Crankshaft Main Bearing and Oil Seal Kit
• Application: Bottom-End Rebuild / Crankshaft Replacement
• Engine Coverage: Yamaha YZ450F / WR450F / YZ450FX / YFZ450 / YFZ450X 4-Stroke Single-Cylinder Liquid-Cooled
• Engine Displacement: 449cc
• Bore × Stroke: 95mm × 63.4mm
• Year Range: YZ450F 2003-2022, WR450F 2003-2023, YZ450FX 2016-2023, YFZ450 2004-2013, YFZ450 SE 2005-2008, YFZ450 Bill Balance 2007, YFZ450 LE 2004, YFZ450X 2008
• Cylinder Configuration: Single-Cylinder Inline 4-Stroke Liquid-Cooled DOHC
• Transmission: 5-Speed (motocross/quad), Wide-Ratio 5-Speed (WR450F off-road)
• Kit Contents: 2x Crankshaft Main Bearings (Prelubed and Packaged with Waterproof Grease), 2x Crankshaft Oil Seals (Left and Right) with Sealing Lip
• Models Covered: YZ450F + Monster Energy Motocross, WR450F Enduro, YZ450FX Cross-Country, YFZ450 + LE + SE + Bill Balance Sport ATV, YFZ450X Cross-Country Quad
• Use: Compatible with Yamaha OEM and Hot Rods aftermarket crankshafts
• Condition: New

APPLICATIONS:
• Yamaha YZ450F 4-Stroke 449cc DOHC Motocross (2003-2022 + Monster Energy Edition 2021-2022)
• Yamaha WR450F 4-Stroke 449cc DOHC Off-Road / Enduro (2003-2023)
• Yamaha YZ450FX 4-Stroke 449cc DOHC Cross-Country (2016-2023)
• Yamaha YFZ450 4-Stroke 449cc DOHC Sport ATV (2004-2013) + LE (2004) + SE (2005-2008) + Bill Balance (2007)
• Yamaha YFZ450X 4-Stroke 449cc DOHC Cross-Country Quad (2008)
• DOES NOT FIT 2024 and Newer YZ450F / WR450F / YZ450FX — different bearings required

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Was: $205.43
Sale: $117.39
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Description

YAMAHA YZ450F 4-STROKE MOTOCROSS — 449cc Single-Cylinder Liquid-Cooled DOHC (2003-2022):
• Yamaha YZ450F 449cc 4-Stroke DOHC Liquid-Cooled (2003, LAUNCH Year — Replaced YZ426F)
• Yamaha YZ450F 449cc 4-Stroke DOHC Liquid-Cooled (2004-2009, First-Generation Era)
• Yamaha YZ450F 449cc 4-Stroke DOHC Liquid-Cooled (2010-2017, Reverse-Cylinder Era — Major Redesign)
• Yamaha YZ450F 449cc 4-Stroke DOHC Liquid-Cooled (2018-2022, Modern Production Era)
• Yamaha YZ450F Monster Energy Edition (2021-2022, Special Graphics Variant)
• 95mm Bore × 63.4mm Stroke 4-Stroke Race-Spec Motocross

YAMAHA WR450F 4-STROKE OFF-ROAD / ENDURO (2003-2023):
• Yamaha WR450F 449cc 4-Stroke DOHC Liquid-Cooled Off-Road / Enduro (2003-2009, Early Production Era)
• Yamaha WR450F 449cc 4-Stroke DOHC Liquid-Cooled Off-Road / Enduro (2011-2015, Continued Production)
• Yamaha WR450F 449cc 4-Stroke DOHC Liquid-Cooled Off-Road / Enduro (2016-2023, Modern Production Era)
• Wide-ratio 5-speed transmission, off-road-tuned suspension and engine mapping

YAMAHA YZ450FX CROSS-COUNTRY (2016-2023):
• Yamaha YZ450FX 449cc 4-Stroke DOHC Liquid-Cooled Closed-Course Off-Road (2016-2023)
• Wide-ratio transmission, electric start, off-road-specific tuning

YAMAHA YFZ450 SPORT ATV (2004-2013):
• Yamaha YFZ450 449cc 4-Stroke DOHC Liquid-Cooled Sport Quad (2004, LAUNCH Year — Pure-Sport ATV Platform)
• Yamaha YFZ450 449cc 4-Stroke DOHC Liquid-Cooled Sport Quad (2005-2009, First-Generation Era)
• Yamaha YFZ450 449cc 4-Stroke DOHC Liquid-Cooled Sport Quad (2012-2013, Final Production Years — 2010-2011 Non-Production)
• Yamaha YFZ450 LE Limited Edition (2004, Launch-Year Special Edition)
• Yamaha YFZ450 SE Special Edition (2005-2008)
• Yamaha YFZ450 Bill Balance Edition (2007, Pro Athlete Signature Edition)
• Yamaha YFZ450X Cross-Country Quad Variant (2008, Off-Road/Cross-Country Specific)

NOTES:
• Compatible with Yamaha OEM crankshafts and aftermarket Hot Rods replacement crankshafts
• 2003 = LAUNCH year of YZ450F — replaced YZ426F as Yamaha's flagship 4-stroke motocross
• 2004 = LAUNCH year of YFZ450 — Yamaha's first pure-sport 4-stroke quad
• Same bottom-end engine architecture across motocross, enduro, cross-country, and ATV variants
• YFZ450 production gap in 2010-2011 (model on hiatus before 2012-2013 final production years)
• Quality alternative to expensive Yamaha OEM main bearings and crankshaft seals
• Recommended for any bottom-end rebuild, crankshaft replacement, or seal-out repair
• Bearings prelubed and packaged with waterproof grease; crank seals feature sealing lip designed to reduce crank pin wear
• 2024+ models use different bottom-end — separate kit required

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  • Item Requires Shipping
  • 2.0 lbs.
  • W9.0000” x H0.8000” x L12.0000”
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