K&N Air Filters - $40 (Acme)

condition: new

make / manufacturer: K&N

model name / number: RC-1252

size / dimensions: 2.25 " x 4.5 " x 3.5 "

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Two new K&N Universal Clamp-On Lifetime air filters, SKU # RC-1252. These have 2.25 inch (58mm) ID inlet bores. The bores are straight and come with new stainless clamps. The width at the base of the cone is 3.5 inches. The total length is 4.5 inches (115 MM). These are intended for use on powersports (motorcycle, atv, snowmobile, etc.) carbs. A fair number of such carbs share the 2.25 inch inlet flange size regardless of their venturi size, but you will need to measure your flange(s). These could probably also fit a couple of mm smaller or larger as they are pretty flexible and clamp on. If you go to the K&N website and enter the SKU number of RC-1252 you can see all the particulars. These are $200 from K&N, so if you can use them, buying new at a 75% discount seems like a pretty fair deal to me. If needed, these can be shipped at buyer's expense. I bought these for a resto-mod but in the end had to go a different route.

post id: 7894361816

posted: 2025-11-08 09:59

updated: 2026-04-13 19:17

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K&N Air Filters - motorcycle parts - by owner - vehicle automotive...

Two new K&N Universal Clamp-On Lifetime air filters, SKU # RC-1252. These have 2.25 inch (58mm) ID inlet bores. The bores are straight and come with new stainless clamps. The width at the base...