Short sized HAMP filters have been permanently discontinued by Honda and soon will never be available again, we have some of the last remaining stock in the world - but when it's gone, it's gone. Stock up while you can. All HAMP filters include a free sump/pan washer for convenience.
Honda Japan's aftermarket line of automotive products, "HAMP Synergy". HAMP products are designed by Honda to be an alternative to "Honda Original Parts" (HOP). HAMP oil filters can be used on almost all petrol Hondas from 1987 onwards with the noteably exception of the NSX. They were specifically designed with the higher performance Type-R/S models in mind.
Features include a unique release valve that dynamically adjusts to the conditions within the filter to keep the oil flow and pressure constant. HAMP filters are manufactured by Toyo Roki, known for producing the best quality OEM Honda filters worldwide. European and American filters are usually produced by Honeywell/Fram/Filtech and are seen as less desirable. These oil filter will last longer and filter better than almost any other oil filters currently on the market.
The smaller HAMP filters, commonly known as the "Short", on average increases oil pressure by around 5psi due to its smaller size. There is no loss of filtration or performance with the smaller filter, they are most people's first choice.