APPLICABLE WITH: 1986-1987 Kawasaki Bayou 300 KLF300A 1988-2005 Kawasaki Bayou 300 KLF300B 1989-2005 Kawasaki Bayou 300 KLF300C SPECS: Intake Manifold Side: inner diameter: 32mm(1.27")/ outer diameter: 37mm(1.46") Air Filter Intake Side: inner diameter: 47mm(1.85")/ outer diameter: 50mm(1.97") QUALITY GUARANTEE: 12-Month Warranty AFTER-SALE: At ATRACYPART, we take pride in the quality of our products and in your satisfaction. If you have any problems, do not hesitate to contact us,we will reply you within 24 hours:)