CYLINDER WORKS, CYLINDER KIT HONDA CRF250R 2004-2009, CRF250X 2004-2017, 81mm

The +3mm Big Bore Cylinder Kit (Part Number: 11001-K01) is designed to significantly enhance the performance of Honda CRF250R (2004–2009) and CRF250X (2004–2017) models. With an 81mm bore size, this kit increases the engine displacement to 269cc, delivering a 13.0:1 compression ratio. When used with the Hot Rods #4183 crankshaft, the displacement increases to 277cc. This kit requires case machining, and detailed instructions are included.

Features:

• (+3mm Big Bore Kit) increases displacement to 269cc with a 13.0:1 compression ratio.
• Compatible with Vertex #23535 piston.
• Achieves 277cc when paired with Hot Rods #4183 crankshaft.
• Requires case machining (instructions provided).
• Includes all necessary components for installation.

Package Includes:

• (1) Cylinder
• (1) Piston
• (1) Wrist pin
• (2) Cir-clips
• Gaskets

Replacement Parts:

• Replacement Big Bore Cylinder: Order No. 140408
• Replacement Big Bore Piston Kit: Order No. 131447S
• Replacement Big Bore Piston Rings: Order No. 131447SR
• Replacement Big Bore Gasket Kit: Order No. 263948

Vehicle Compatibility:

• Honda CRF250R: 2004–2009
• Honda CRF250X: 2004–2017

Cross-Reference Part Numbers:

• 422-11001K
• 0931-0118
• 733712
• 2055
• HR11001K01
• 77000-35
• 12100-KRN-672
• 12100-KRN-730
• 12100-KRN-731
• WT400210100009
• P400210100009

Note:

• Case machining is required for installation.

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.