Unifilter YAMAHA YZ 80 87-92 ProComp2 Air Filter
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ProComp2 Air Filter. Suits: YAMAHA YZ 80 87-92 Compatible years: 1987, 1988, 1989, 1990, 1991, 1992.
ProComp2 Dual-Stage Air Filters
Pro-level protection for serious enduro riders and weekend warriors alike

When the dust is thick and the trail is long, your engine needs more than a standard filter. Unifilter’s ProComp2 range is a true two-stage air filter built to keep fine dirt out of your engine in the harshest, dustiest conditions, without choking airflow.
The corrugated outer layer gives you 100% more surface area than a standard filter, so it traps more dirt and keeps breathing for longer. Behind it, a separate inner layer acts as a safety stage, catching anything that makes it through.
Unlike most dual-stage filters, the ProComp2’s layers aren’t bonded together. That means nothing restricts airflow between the stages, and you can pull the layers apart for a faster, more thorough clean.
Why riders choose ProComp2
- Two-stage filtration for maximum protection in extreme dust
- Corrugated outer layer with double the surface area of a standard filter
- Separate, non-bonded layers for better airflow and easier cleaning
- Improved airflow for crisper throttle response and more power
- Designed and made in Australia for Australian conditions
Independently tested airflow
In June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The ProComp2 (AU1455ST) flowed 221.92 CFM, more than every competitor filter tested, including the KTM/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex and Funnelweb.
The only filter that flowed more was our own single-stage [O2Rush]. That means you get dual-stage dust protection with no airflow penalty compared with the other brands tested.
Test conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.
Please note: ProComp2 filters are supplied dry and must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.

Unifilter replacement automotive air filters are designed to give the ultimate in protection while delivering the best performance possible. Designed and made in Australia for Australian conditions.
Features
- Australian made & designed for Australian conditions
- Corrugated outer stage for increased surface area
- Fully serviceable 2 stage element
- Improved power, torque & fuel ecconomy
- Improved filtration
