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Due to Thanksgiving and the holiday rush, our current handling time is approximately 4–5 business days. We sincerely appreciate your patience and understanding. We truly appreciate your business and are thankful for another great year serving our customers. If you have any questions or concerns, please contact us—our team is working as hard as possible to ship all orders promptly.
Due to Thanksgiving and the holiday rush, our current handling time is approximately 4–5 business days. We sincerely appreciate your patience and understanding. We truly appreciate your business and are thankful for another great year serving our customers. If you have any questions or concerns, please contact us—our team is working as hard as possible to ship all orders promptly.

Yamaha YFZ450 / YFZ450R / YFZ450F / YFZ450X

Yamaha 450cc ATV Quad Parts YFZ450 / YFZ450R / YFZ450F / YFZ450X

Rebuild Kits
Top End | Bottom End | Complete Engine Rebuild | Complete Engines | 

Parts
Bearings | Camshafts | Carbs/Jetting | Cables | Clutch Components | Cooling Systems | Crankshafts | Cylinder & Head Stud Kits | Cylinder Heads | Exhaust Studs | Gaskets/Seals | Grips | Intake Components | Oil System | Pistons | Spark Plugs | Timing Chains/Guides /Tensioners | Titanium Hardware | Valvetrain Components | 

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Save 22% Save %
$599.99
$599.99 - $599.99
$599.99
$469.99
$469.99 - $469.99
$469.99

YFZ450R YFZ 450R Pro-X ProX Valves Valve Springs Spring Complete Head Redo Kit

Pro-X

WORKS ON MULTIPLE YAMAHA 450cc ATVs AND DIRT BIKES - SEE FITMENT CHART ABOVE FOR YOURS Pro-X stainless steel intake and exhaust valves Pro_X valve...

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$599.99
$599.99 - $599.99
$599.99
$469.99
$469.99 - $469.99
$469.99
Save 22% Save %
Save 12% Save %
$175.95
$175.95 - $175.95
$175.95
$154.00
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$154.00

Yamaha YFZ450R 2014–2025 ProX 03.2444 Connecting Rod Kit Heavy Duty Pin Bearing

Pro-X

03.2444, 8729, PSR8808A, PSR8802A, 06.3662.8, RA-40010, P4086-R, P249, 22.364523F-1, B162, 06.3662.8, 193564291295,Shop the ProX 03.2444 Heavy Duty...

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$175.95
$175.95 - $175.95
$175.95
$154.00
$154.00 - $154.00
$154.00
Save 12% Save %
Save 12% Save %
$175.95
$175.95 - $175.95
$175.95
$154.00
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$154.00

14-25 Yamaha YFZ450R/X ProX Crank Rod Kit 03.2444 Pro X Connecting Rod Kit JAPAN

Pro-X

03.2444, 8729, PSR8808A, PSR8802A, 06.3662.8, RA-40010, P4086-R, P249, 22.364523F-1, B162, 06.3662.8, 193564291295,Shop the ProX 03.2444 Heavy Duty...

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$175.95
$175.95 - $175.95
$175.95
$154.00
$154.00 - $154.00
$154.00
Save 12% Save %
Save 12% Save %
$175.95
$175.95 - $175.95
$175.95
$154.00
$154.00 - $154.00
$154.00

ProX Racing Connecting Rod Kit YFZ450R 2014–2025 Crank Pin Bearing Made In Japan

Pro-X

03.2444, 8729, PSR8808A, PSR8802A, 06.3662.8, RA-40010, P4086-R, P249, 22.364523F-1, B162, 06.3662.8, 193564291295,Shop the ProX 03.2444 Heavy Duty...

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$175.95
$175.95 - $175.95
$175.95
$154.00
$154.00 - $154.00
$154.00
Save 12% Save %
Save 12% Save %
$175.95
$175.95 - $175.95
$175.95
$154.00
$154.00 - $154.00
$154.00

Yamaha YFZ450R ProX Heavy Duty Connecting Rod Kit '14–25 OEM Replacement 03.2444

Pro-X

03.2444, 8729, PSR8808A, PSR8802A, 06.3662.8, RA-40010, P4086-R, P249, 22.364523F-1, B162, 06.3662.8, 193564291295,Shop the ProX 03.2444 Heavy Duty...

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$175.95
$175.95 - $175.95
$175.95
$154.00
$154.00 - $154.00
$154.00
Save 12% Save %
Save 15% Save %
$49.95
$49.95 - $49.95
$49.95
$42.46
$42.46 - $42.46
$42.46

Yamaha YFZ450R YFZ 450R 450X Crankshaft Crank Main Bearing Pro-X ProX 23.SX06C84

Pro-X

Unlock the true power of your Yamaha YFZ450R/YFZ450X with this high-performance crankshaft bearing from Pro X Racing.1 Premium Made In Japan Main C...

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$49.95
$49.95 - $49.95
$49.95
$42.46
$42.46 - $42.46
$42.46
Save 15% Save %
Save 24% Save %
$214.55
$214.55 - $214.55
$214.55
$163.06
$163.06 - $163.06
$163.06

ProX Piston Kit 04-13 Yamaha YFZ450 / 09-25 YFZ450R 12.0:1 95mm (94.95mm) Pro X

Pro-X

ProX Piston Kit Yamaha YFZ450 '04-13/Yamaha YFZ450R '09-25 12.0:1 95mm (94.95mm)SKU: 01.2435.AOEM Reference No: 5TG-11631-00-00ProX Piston Kits ar...

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$214.55
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$214.55
$163.06
$163.06 - $163.06
$163.06
Save 24% Save %
$201.80 - $201.80
$201.80
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$201.80

ProX High Compression Piston Kit Yamaha YFZ450R '09-21 13.0:1 (94.95mm)

Pro-X

ProX High Compression Piston Kit Yamaha YFZ450R '09-21 13.0:1 (94.95mm) Pro-X Piston Key features 1. High-quality materials: Pro-X pistons are ...

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$201.80 - $201.80
$201.80
$201.80 - $201.80
$201.80
$154.91 - $154.91
$154.91
$154.91 - $154.91
$154.91

ProX Piston Kit Yamaha YFZ450 '04-13/Yamaha YFZ450R '09-21 12.0:1 (94.97mm)

Pro-X

ProX Piston Kit Yamaha YFZ450 '04-13/Yamaha YFZ450R '09-21 12.0:1 (94.97mm) Pro-X Piston Key features 1. High-quality materials: Pro-X pistons ...

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$154.91 - $154.91
$154.91
$154.91 - $154.91
$154.91
$165.10 - $165.10
$165.10
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$165.10

ProX Piston Kit Yamaha YFZ450 '04-13/Yamaha YFZ450R '09-21 12.0:1 (94.96mm)

Pro-X

ProX Piston Kit Yamaha YFZ450 '04-13/Yamaha YFZ450R '09-21 12.0:1 (94.96mm) Pro-X Piston Key features 1. High-quality materials: Pro-X pistons ...

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$165.10 - $165.10
$165.10
$165.10 - $165.10
$165.10
$170.41 - $170.41
$170.41
$170.41 - $170.41
$170.41

ProX High Compression Piston Kit Yamaha YFZ450R '09-21 13.0:1 (94.96mm)

Pro-X

ProX High Compression Piston Kit Yamaha YFZ450R '09-21 13.0:1 (94.96mm)

$170.41 - $170.41
$170.41
$170.41 - $170.41
$170.41

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