Quad Parts

Big Bore Cylinder Kit Yamaha YFZ 450 R 2009-2017, 2019-2027 / Yamaha YFZ 450 R 2018 (AMERICA) / Yamaha YFZ 450 RL 70th Anniversary 2026 / Yamaha YFZ 450 RSE Special Edition 2009-2027 / Yamaha YFZ 450 X 2010-2011 (AMERICA) / Yamaha YFZ 450 XSE Special Edition 2011 (AMERICA)

CYLINDER WORKSPart no. 21003-K02

Our price £739.42

RRP £778.33Save £38.91 (5%)

Price includes applicable VAT. Delivery calculated separately.

Product details

Big Bore Cylinder Kit Cylinder kit includes matching Vertex pistons to ensure longevity, performance and reduced engine noise Cylinders have a nickel silicon carbide cylinder sleeve Look virtually identical to OEM cylinders Kit includes cylinder, pistons, rings, pin, clips and gaskets Made in the USA Cylinder does not require machine work (unless noted). Kit Includes: • Cylinder • Piston Kit • Top-End Gasket Kit

Supplier reference: 09310378
Manufacturer reference: 21003-K02

Dimensions & specification
Bore - Oversize Metric
+3.00 mm
Product Name
Cylinder Kit
Riding Style
ATV
Compression Ratio
12,0:1
Color/Finish
Gray
Units
Kit
Style
Big Bore
Cylinder Diameter
98,00 mm
Engine Type
4-Cycle
Compression Ratio Imperial
12.0:1
Cylinder Diameter Metric
98.00 mm
Displacement
480 cc
Material
Aluminum| Cast
Bore - Oversize
+3,00 mm
Delivery & returns

UK standard delivery: 6–10 working days. In-stock parts dispatch within 2–3 working days.

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Compare your model, year and exact variant, then check the number on your original part.

Vehicle fitment

All 42 supplier-listed applications. Match your complete model, year, position and any notes.

Complete supplier-listed applications for 21003-K02
MakeModel & variantYearVehicle typeVehicle IDVariantMarket
YAMAHAYFZ 450 R200928585ALL
YAMAHAYFZ 450 R201028593ALL
YAMAHAYFZ 450 R201150091ALL
YAMAHAYFZ 450 R201268247ALL
YAMAHAYFZ 450 R201379387ALL
YAMAHAYFZ 450 R201486399ALL
YAMAHAYFZ 450 R201589439ALL
YAMAHAYFZ 450 R201699277ALL
YAMAHAYFZ 450 R2017101039ALL
YAMAHAYFZ 450 R2018105169AMERICA
YAMAHAYFZ 450 R2019109939ALL
YAMAHAYFZ 450 R2020117961ALL
YAMAHAYFZ 450 R2021141707ALL
YAMAHAYFZ 450 R2022156556ALL
YAMAHAYFZ 450 R2023156557ALL
YAMAHAYFZ 450 R2024169593ALL
YAMAHAYFZ 450 R2025186749ALL
YAMAHAYFZ 450 R2026209784ALL
YAMAHAYFZ 450 R2027217617ALL
YAMAHAYFZ 450 RL202620979070th AnniversaryALL
YAMAHAYFZ 450 RSE200928587Special EditionALL
YAMAHAYFZ 450 RSE201028595Special EditionALL
YAMAHAYFZ 450 RSE201150093Special EditionALL
YAMAHAYFZ 450 RSE201268249Special EditionALL
YAMAHAYFZ 450 RSE201379389Special EditionALL
YAMAHAYFZ 450 RSE201486401Special EditionALL
YAMAHAYFZ 450 RSE201589441Special EditionALL
YAMAHAYFZ 450 RSE201699279Special EditionALL
YAMAHAYFZ 450 RSE2017101035Special EditionALL
YAMAHAYFZ 450 RSE2018105167Special EditionALL
YAMAHAYFZ 450 RSE2019109937Special EditionALL
YAMAHAYFZ 450 RSE2020117959Special EditionALL
YAMAHAYFZ 450 RSE2021141710Special EditionALL
YAMAHAYFZ 450 RSE2022156553Special EditionALL
YAMAHAYFZ 450 RSE2023156554Special EditionALL
YAMAHAYFZ 450 RSE2024169588Special EditionALL
YAMAHAYFZ 450 RSE2025186744Special EditionALL
YAMAHAYFZ 450 RSE2026209787Special EditionALL
YAMAHAYFZ 450 RSE2027217622Special EditionALL
YAMAHAYFZ 450 X20101TD28589AMERICA
YAMAHAYFZ 450 X20111TD50095AMERICA
YAMAHAYFZ 450 XSE20111TD50097Special EditionAMERICA
Big Bore Cylinder Kit Yamaha YFZ 450 R 2009-2017, 2019-2027 / Yamaha YFZ 450 R 2018 (AMERICA) / Yamaha YFZ 450 RL 70th Anniversary 2026 / Yamaha YFZ 450 RSE Special Edition 2009-2027 / Yamaha YFZ 450 X 2010-2011 (AMERICA) / Yamaha YFZ 450 XSE Special Edition 2011 (AMERICA)
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