How often do we need to clean these, and how, air compressor, or ?

shold clean when you change your oil depends on how bad they look , air or break cleaner or both

Will this fit my 1988 indy 650?

You will have to measure the outside diameter of what you mount it to. 2.36 inches. Is just bigger than2 and a quarter inches

would this fit a skidoo formula III 600 1996 ?

If its close to 2 inches there is a little lee way using a hose clamp

States; increased hp, is that because when I tighten it down on a 39mm intake it sucks more air between boot and filter than filter? :cry:

If you're putting this 54mm air filter on a 38mm carb throat, you're going to ruin your engine. You need a filter with a flange that fits the 38mm throat of your carb.

Manufacturer	MUYI
Brand	MUYI
Item Weight	1.2 pounds
Product Dimensions	3 x 3 x 3.5 inches
Is Discontinued By Manufacturer	No
Manufacturer Part Number	4xSKUMY20031
Position	Rear Outside

4PCS 54mm Air Filter

Description

Specifications

Common Questions