im thinking of getting Koni Yellow for my 2002 civic, the question is, i dont know that there are 2 types of should i say, size...

Koni Yellow Sport Shocks 2001-On Honda Civic with Front 55mm outer diameter housing
#8610.1415SPORT & 8041.1281SPORT

Koni Yellow Sport Shocks 2001-On Honda Civic with front 50mm outer diameter housing
#8641.1416SPORT & 8041.1281SPORT


which one??? i have a 2002 civic LX...