Twin Air Standard Air Filter for Beta (158033)

The Twin Air Standard Air Filter, Part Number 158033, is designed to provide dependable engine protection and consistent airflow for compatible Beta motorcycles. Its dual-bonded foam construction captures even the smallest dirt particles while allowing more airflow than two separate-layer filters, a performance advantage proven on a flow bench. This design helps support efficient engine operation in demanding riding environments.
The Twin Air filter is made slightly smaller than the original equipment filter to simplify installation and removal. The reduced size also increases the dead-air space around the filter, helping improve airflow behavior and overall filter performance. This practical design makes routine maintenance faster while maintaining the filtration performance expected from Twin Air products.
A flat foam sealing ring creates a secure seal against the airbox, helping prevent unfiltered air from bypassing the filter. The sealing surface is designed to remain seated even during aggressive riding, vibration, and challenging off-road conditions. As a replacement air filter for compatible Beta applications, the Twin Air Standard Air Filter combines reliable dirt protection, serviceable installation, and durable performance for riders who demand consistent engine airflow.

Features:

• Dual-bonded foam construction filters out very small dirt particles while promoting high airflow

• Flow-bench-proven design provides more airflow than two separate-layer filters

• Slightly smaller than the stock filter for easier installation and removal

• Increased dead-air space around the filter supports improved airflow performance

• Flat foam sealing ring securely seats against the airbox

• Designed to maintain a reliable seal in demanding riding conditions

Ships from Parts Unlimited.