The Cylinder Works +3mm Big Bore Complete Cylinder Kit increases the displacement of Honda TRX450R and TRX450ER models to 477cc. This direct bolt-on kit requires no replating or additional machining, offering OEM-like fitment and reliable performance.

Features:

• Increases displacement to 477cc with a +3mm big bore cylinder.


• Nickel Silicon Carbide plating ensures long-lasting durability.


• Precisely honed for straightforward piston installation.


• Complete kit includes all necessary components for top-end rebuilding.

Included Components:

• Cylinder


• Vertex piston


• Ring set (3 rings)


• Wrist pin


• Circlips (2)


• Base gasket


• Case gasket


• Exhaust gasket


• Head gasket

Cross-Reference Part Numbers:

• 422-11005K


• 0931-0175


• 733728


• 4190


• HR11005K01


• 77000-38


• 12100-HP1-600

Vehicle Fitments:

• Honda TRX450ER: 2006–2014


• Honda TRX450R: 2006–2013