F funksilver07 Member : 2007 Sunlight Silver Mazdaspeed 3 GT May 24, 2009 #1 For you guys who have swapped your stock RSB on your Mazdaspeed 3, what size did you go with? Stock is 26mm I think? How are the results?
For you guys who have swapped your stock RSB on your Mazdaspeed 3, what size did you go with? Stock is 26mm I think? How are the results?
S speedsports Member : Mazdaspeed 3 May 24, 2009 #2 I went with Cobb's RSB. Installed today. Not sure the mm, but according to the site its 35% stiffer.