K&N parts matching UNI NU4121 air filter

The UNI NU4121 air filter cross references with the K&N air filter parts below. K&N offers compatible air filters for many UNI air filters giving you an alternative.
ProductPart NumberProduct Image 
K&N Replacement Air Filter
  • Designed to Increase Power
  • Million Mile Limited Warranty
Kyle Carlson, Ephrata, Washington
Product as described...always the best.
Beto Aguilar, Arizona
Great buy. The bike breathes so much better and even got better gas mileage. Not to mention fast shipping from K&N.
Tim, Papillion, Nebraska
HA-9200 K&N HA-9200 Replacement Air Filter
List Price: $87.19
Your Price: $64.99