K&N RB-0510: RB-0510 Round Straight Air Filter Flange Dia. (F): 2.125 in. (54 mm)
2.125'' (54 mm) Flange Dia. (F)
Round Straight Air Filter Flange Dia. (F): 2.125'' (54 mm) Outside Dia. (D): 3.5'' (89 mm) Length (L): 5'' (127 mm) Top Style: Rubber Flange Length (FL): 1'' (25 mm) Flange Angle (FA): 5º Flange Offset: 0''