Automotive Parts and Accessories: Renthal 150U-520-50GBBU Ultralight Blue 50 Tooth Rear Sprocket - Renthal

Home Improvement: SILICONE RADIATOR HOSE KIT FOR YZF450 YZ450F WR450 2003-2007 03 04 05 06 07 BK - CORP

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Automotive Parts and Accessories: K&N YA-2506XD Yamaha/Suzuki High Performance Replacement Air Filter - K&N

Book: Official 2003 Yamaha WR450F Factory Owners Service Manual - Yamaha Motors

Automotive Parts and Accessories: HELLA HLA-H83140171 H4 12V 100/80W Halogen Bulb Off Road Use - Hella

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Automotive Parts and Accessories: EiKO 9003/H4CVSU2 ClearVision Supreme Halogen Headlamp, (Pack of 2) - EiKO

Automotive Parts and Accessories: Champion RN3C (880) Copper Plus Small Engine Spark Plug, Pack of 1 - Champion

Automotive Parts and Accessories: KYB Shock Service Kit 129994600501 - KYB

Automotive Parts and Accessories: Renthal 966-05-SI-01-185 Silver 7/8" Aluminum Handlebar - Renthal

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Automotive Parts and Accessories: HELLA HLA-H83140101 H4 12V 60/55W Halogen Bulb - Hella

Automotive Parts and Accessories: CruzTOOLS AW142227 14mm x 22mm x 27mm Combo Axle Wrench - CruzTOOLS

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Wr450f 2003 Popular Q&A

Q: Where is the spark plug and oil filter on the wr450f 2003?
A: The spark plug is recessed into the cylinder head. Look for the spark plug wire coming out of the top of the engine. http://www.yamaha-motor.com/sport/myyama…. ... Read More »

Q: What is the piston ring end gap tolerance for yamaha wr450f 2003
A: If you buy factory the gap is set. If not OEM give .004 Read More »

Q: Hesitation problems 2003 yamaha wr 450 f?
A: sounds like a jetting issue. change the main jets starting from the largest one you own and work your way down. Read More »

Q: How much oil should i put in my 2003 Yamaha WR450F?
A: The specs page I looked at did not give a concise volume amount. Y... Read More »

Q: Does anybody know the common weaknesses , if any , in my new 2003...
A: Sorry pal ,answer is you - good riding & race within your limits - take time to learn how faster guys do it without crashing that way you do not get hurt today ... Read More »