0
£0.00
Phone0800 689 1957 Email[email protected]
Motocross Parts UK
0
£0.00

YZF 450

YZ450F Engine The YZ450F engine is a four-stroke DOHC engine that was first released in 2003. It is based on the earlier YZ426F engine but with several key changes that improve performance and durability. The most notable change is the addition of fuel injection, which replaced the carburettor in p...  show more

2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Filter by part type
Filter by part type
YAMAHA YZ-F 450 2006-2009 98MM 478CC BIG BORE KIT
£540.80
The upgrade that turns a good bike into a great one.
YAMAHA YZ-F 450 2010-2013 98MM 468CC BIG BORE KIT
£540.80
The upgrade that turns a good bike into a great one.
YAMAHA YZF / WRF 450 2003-2024 MAIN BEARING KIT K022
£79.75
The part that decides whether your rebuild lasts one season or five.
YAMAHA YZF 250 / WRF 250 / YZF 450 2009-2024 / WRF 450 2016-2024 LINKAGE BEARING KIT 27-1171
£85.63
Smooth rear travel starts with the bearings that make it possible.
YAMAHA YZF 250/450 / WRF250/450 2005 LINKAGE BEARING KIT INC. BOTTOM SHOCK BEARING BY PIVOTWORKS
£87.84
Smooth rear travel starts with the bearings that make it possible.
YAMAHA YZF 426 2002 / YZF 450 2003-2005 / WRF 450 2003-2005 SWING ARM BEARING KIT
£72.99
The bearings that decide how connected the rear end feels.
YAMAHA YZF 450 2003 - 2005 WRF 450 2003 - 2006 95MM HIGH COMPRESSION CYLINDER KIT 13.5:1
£473.20
The simplest way to bring a tired top end back to life.
YAMAHA YZF 450 2003 - 2005 WRF 450 2003 - 2006 95MM STANDARD COMPRESSION CYLINDER KIT 12.5:1
£462.80
The simplest way to bring a tired top end back to life.
YAMAHA YZF 450 2003 - 2005 WRF 450 2003 - 2006 REPLACEMENT CYLINDER 95MM
£254.93
Back to standard, back to full power.
YAMAHA YZF 450 2003 - 2009 / WRF 450 2003 - 2011 BIG END BEARING 34 X 42 X 19.8
£27.65
The small part that decides whether your bottom end survives or fails.
YAMAHA YZF 450 2003-2005 WRF 450 2003-2006 HOT RODS TRANSMISSION BEARING KIT
WAS £109.99 £89.00
The bearings that keep every gear change precise and quiet.
YAMAHA YZF 450 2003-2005 WRF 450 2003-2006 TOP END GASKET KIT INC. VALVE STEM SEALS
£70.82
The seal that makes sure the rest of the job holds.
YAMAHA YZF 450 2003-2009, 2020-2024 / WRF 450 2003-2009, 2011-2015, 2021-2024 VERTEX CAM CHAIN
£55.84
A small part that protects the whole top end.
YAMAHA YZF 450 2003-2021 / WRF 450 2004-2021 OUTPUT SHAFT KIT
£28.32
The last link in the chain between your engine and the ground.
YAMAHA YZF 450 2006 - 2009 WRF 450 2007 - 2015 95MM HIGH COMPRESSION CYLINDER KIT 13.5:1
£493.27
The simplest way to bring a tired top end back to life.
YAMAHA YZF 450 2006 - 2009 WRF 450 2007 - 2015 95MM STANDARD COMPRESSION CYLINDER KIT 12.5:1
£456.14
The simplest way to bring a tired top end back to life.
YAMAHA YZF 450 2006 - 2009 WRF 450 2007 - 2015 REPLACEMENT CYLINDER 95MM
£253.56
Back to standard, back to full power.
YAMAHA YZF 450 2006-2008 / WRF 450 2007-2015 LINKAGE BEARIING KIT INC. BOTTOM SHOCK BEARING BY PIVOTWORKS
£87.84
Smooth rear travel starts with the bearings that make it possible.
YAMAHA YZF 450 2006-2009 +3MM 471CC STROKER CRANKSHAFT
£396.06
The part every other engine component depends on.
YAMAHA YZF 450 2006-2009 / WRF 450 2006-2015 SWING ARM BEARING KIT
£72.99
The bearings that decide how connected the rear end feels.
YAMAHA YZF 450 2006-2009 WRF 450 2007-2014 TOP END GASKET KIT INC. VALVE STEM SEALS
£70.82
The seal that makes sure the rest of the job holds.
YAMAHA YZF 450 2010 - 2013 97MM HIGH COMPRESSION CYLINDER KIT 13.5:1
£541.01
The simplest way to bring a tired top end back to life.
YAMAHA YZF 450 2010 - 2013 97MM STANDARD COMPRESSION CYLINDER KIT 12.5:1
£541.01
The simplest way to bring a tired top end back to life.
YAMAHA YZF 450 2010 - 2013 BIG END BEARING 34 X 42 X 20.8
£27.65
The small part that decides whether your bottom end survives or fails.
Can't find your part? Contact us here

Stop overpaying for parts that do the exact same job.

Select your bike and see every part built for it — race-grade quality, guaranteed fit, dealer prices left behind.

Find my parts

Our website uses cookies for essential functionality, to remember your choices and to analyse anonymous visitor statistics. For further information, please see our privacy policy.

Looks like you're in
United Kingdom

Please confirm your location so we can show you the correct delivery options and prices.