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Part Number:

1057-2

Price:

$269.95 each

Status:

For Model(s):

2004-2007 Honda CRF 250R
2004-2009 Honda CRF 250X

Description:

Stage 2: Single cam engine. Excellent top-end power with great over rev. Uses stock auto-decompression mechanism. Uses stock valve springs.

More Information:

Tech Support Documents:

Intake
Intake lift (mm):	8.40
Intake lobe center (degrees):	107.50
Intake duration (degrees at 1mm):	252.00
Intake valve lash (mm):	0.12
Exhaust
Exhaust lift (mm):	8.35
Exhaust lobe center (degrees):	102.50
Exhaust duration (degrees at 1mm):	267.00
Exhaust valve lash (mm):	0.28
Note: Divide mm values by 25.4 for inches.

	1057-2 Dyno Chart
	Video - Single Cam Installation
	Video - Single Cam Valve Clearance
	Written Installation Checklist

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