Original: $585.86
-70%$585.86
$175.76The Story
Cylinder Works Top End 99mm +2mm 470cc Big Bore Cylinder Kit
FITS YAMAHA MODELS
WR 450 F (21-24); YZ 450 F (20-24); YZ 450 FX (21-24)
SPECS
- Compression Ratio 12.8:1
- Cylinder Diameter: 99 mm
- Cylinder Kit Type: Big Bore
- Displacement: 470 cc
- Engine Type: 4-Cycle
- Includes: Cylinder, Piston Kit, and Vertex Top-End Gasket Kit with Viton valve stem seals
- Size Over Standard: +2.00mm
- Drop in, Bolt on kit with no modifications required
1 year manufacture warranty for your peace of mind*
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Cylinder Works Top End 99mm +2mm 470cc Big Bore Cylinder Kit
FITS YAMAHA MODELS
WR 450 F (21-24); YZ 450 F (20-24); YZ 450 FX (21-24)
SPECS
- Compression Ratio 12.8:1
- Cylinder Diameter: 99 mm
- Cylinder Kit Type: Big Bore
- Displacement: 470 cc
- Engine Type: 4-Cycle
- Includes: Cylinder, Piston Kit, and Vertex Top-End Gasket Kit with Viton valve stem seals
- Size Over Standard: +2.00mm
- Drop in, Bolt on kit with no modifications required
1 year manufacture warranty for your peace of mind*
















