This K&N 56-9265 fits all the popular twin carb applications .from twin 40 's up to twin 50's

its the most popular 84mm tall bolt on unit

obviously 2 would be required for a twin carb set up

K&N custom air filter kits are designed to boost performance from your carburettor while keeping the dirt on the outside where it belongs.

the  main thing with a K and N filter is it doesn't catch fire like a foam filter does if you get a BackFire up through the Carb  and a old or dirty foam filter can get sucked into a carb when its being worked hard where as the kand n element stays in place

These assemblies come with custom chrome top and base plates and the famous K&N High-Flow Washable Air Filter.

• Designed to increase horsepower and acceleration
• Show quality with custom chrome top and base
• Washable and reusable air filter
• High air flow with excellent filtration
• One year limited warranty