PRO DESIGN Foam Filter Only - TRX450R PD-226A

The stock airbox on your TRX450R is engineered for emissions compliance, not performance. This PRO DESIGN foam filter kit eliminates that restriction, delivering measurably improved airflow and engine protection by replacing the vulnerable stock cage with a precision-engineered assembly. If you're serious about maximizing your quad's horsepower and reliability, this is a bolt-on upgrade that pays dividends on the track or trail.

Built from billet aluminum and flow-bench-tested, the venturi adapter and oversized foam element work together to reduce intake resistance while filtering out the dirt and debris that destroy engines. Installation is straightforward—no fabrication required—and the O-ring seal guarantees a reliable fit every time.

• Billet aluminum construction
• CNC-machined design
• Flow-bench venturi adapter
• Oversized foam filter element
• O-ring seal system
• Bolt-on installation
• Replaces stock airbox cage
• Improved airflow delivery
• Enhanced engine protection
• TRX450R specific fitment
• MPN: PD-226A