CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm YAMAHA YZ 2T 250 1999 - 2025 CYLINDER WORKS 21009-K01
Cylinder Works Big Bore Cylinder Kit is a complete top-end rebuild solution for Yamaha YZ 250 models, increasing displacement from 249cc to 295cc with a +5.6mm bore. This kit includes a high-quality nickel silicon carbide (NSC) electroplated cylinder for enhanced durability and reduced friction, along with a hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength. Designed as a true bolt-on upgrade, this kit provides a noticeable power increase throughout the entire RPM range without requiring further engine modifications.
Features
- Complete top-end rebuild kit for big bore applications
- Includes cylinder, cylinder head, power valve kit, piston kit, top-end gasket kit, and wrist pin bearing
- Hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength
- Nickel silicon carbide (NSC) electroplated bore for tighter tolerances and lower friction
- Provides increased power across the entire RPM range
- OEM appearance at a lower cost
- True bolt-on installation with no additional modifications required
Specifications
- Cylinder Diameter: 72 mm
- Cylinder Kit Type: Big Bore
- Displacement: 295 cc
- Engine Type: 2-Cycle
- Compression Ratio: Standard
- Size Over Standard: +5.60 mm
- Uses Vertex Piston #24079B
Vehicle Fitments
- Yamaha YZ 250 2T (1999-2024)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm YAMAHA YZ 2T 250 1999 - 2025 CYLINDER WORKS 21009-K01
CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm YAMAHA YZ 2T 250 1999 - 2025 CYLINDER WORKS 21009-K01
Cylinder Works Big Bore Cylinder Kit is a complete top-end rebuild solution for Yamaha YZ 250 models, increasing displacement from 249cc to 295cc with a +5.6mm bore. This kit includes a high-quality nickel silicon carbide (NSC) electroplated cylinder for enhanced durability and reduced friction, along with a hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength. Designed as a true bolt-on upgrade, this kit provides a noticeable power increase throughout the entire RPM range without requiring further engine modifications.
Features
- Complete top-end rebuild kit for big bore applications
- Includes cylinder, cylinder head, power valve kit, piston kit, top-end gasket kit, and wrist pin bearing
- Hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength
- Nickel silicon carbide (NSC) electroplated bore for tighter tolerances and lower friction
- Provides increased power across the entire RPM range
- OEM appearance at a lower cost
- True bolt-on installation with no additional modifications required
Specifications
- Cylinder Diameter: 72 mm
- Cylinder Kit Type: Big Bore
- Displacement: 295 cc
- Engine Type: 2-Cycle
- Compression Ratio: Standard
- Size Over Standard: +5.60 mm
- Uses Vertex Piston #24079B
Vehicle Fitments
- Yamaha YZ 250 2T (1999-2024)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Cylinder Works Big Bore Cylinder Kit is a complete top-end rebuild solution for Yamaha YZ 250 models, increasing displacement from 249cc to 295cc with a +5.6mm bore. This kit includes a high-quality nickel silicon carbide (NSC) electroplated cylinder for enhanced durability and reduced friction, along with a hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength. Designed as a true bolt-on upgrade, this kit provides a noticeable power increase throughout the entire RPM range without requiring further engine modifications.
Features
- Complete top-end rebuild kit for big bore applications
- Includes cylinder, cylinder head, power valve kit, piston kit, top-end gasket kit, and wrist pin bearing
- Hand-matched Vertex big bore piston made from 2618 aluminum alloy for superior strength
- Nickel silicon carbide (NSC) electroplated bore for tighter tolerances and lower friction
- Provides increased power across the entire RPM range
- OEM appearance at a lower cost
- True bolt-on installation with no additional modifications required
Specifications
- Cylinder Diameter: 72 mm
- Cylinder Kit Type: Big Bore
- Displacement: 295 cc
- Engine Type: 2-Cycle
- Compression Ratio: Standard
- Size Over Standard: +5.60 mm
- Uses Vertex Piston #24079B
Vehicle Fitments
- Yamaha YZ 250 2T (1999-2024)
