Online Store › KN Air Filter - 310R Image 1 of 1 KN Air Filter - 310R £80.00 KN air filter, to fit 310R but will also fit all Sigma powered cars with fresh air intake. Purchase Added! KN air filter, to fit 310R but will also fit all Sigma powered cars with fresh air intake. You Might Also Like Air Filter - K Series Air Filter - Sigma 125 Air Filter - Sigma 150 R400 K Series Air Filter Air Filter - K Series VHPD
