Pro-tek Rear Brake Fluid Reservoir Cap Made For 2002-2007 Honda CB900F CB-900F
This round threaded screw-on rear brake fluid reservoir cap (Pro-tek Part No. RC-100) is 2.25" x .50" and has the word Pro-tek engraved on it twice.
The retail price for this cap is $29.95.
2002-2007 Honda CB900F 919