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Old 06-20-2010, 07:53 AM
Tech Apprentice
Join Date: Oct 2009
Location: Valladolid, Spain
Posts: 88

The F103 was designed with rubber tyres and asphalt in mind.
The F104 with foams and carpet.

In my home track (large outdoor asphalt), my 103 runs as well if not better than the bunch of 104's of the other guys.
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