DNA AIR BOX COVER STAGE 2 YAMAHA XT 660 X/R 2004-15. DNA AIR BOX COVER STAGE 2 – YAMAHA XT 660R/X When a Stage 1 Air Filter is not enough for your vehicle and you do not want to replace your air box, you can choose our Stage 2 intakes for better gains FOR FULL ENGINE PROTECTION & MAXIMUM PERFORMANCE THIS SHOULD BE USED IN CONJUNCTION WITH DNA AIR FILTER P-Y6E04-01. Option of chrome cover to improve aesthetics This DNA® filter is designed as a High flow filter for road and off road use. This DNA High performance air filter is a high quality, next generation, multi-layer cotton gauze, oil impregnated air filter that NEVER needs replacing. Design & Manufacture The filter media is made of 4 layers of high quality surgical cotton gauze sandwiched between two layers of epoxy coated marine grade aluminum wire mesh pleated by state of the art electronically controlled machines to assure a very high quality of filtration media. The result of the special design and the hi-tech manufacturing process is a filtration media that has very high flow rates, low restriction, superior dust holding capability and smoothens out the air flow stream. Special Oil Oil that is used to impregnate the cotton is a very special grade developed by the DNA R&D department after intense testing and produced by one of the world’s best oil companies. This special oil is a very critical part of the filter and has the capability to produce a static charge to the cotton media and attract the entire dust particles that flow towards the filter, even the very fine ones. The Long Life DNA air filter will last the life of the vehicle. Taking Care of the Filter The DNA Air Filter will serve you for many years and needs very little care using the optional DNA Service kit. When the filter is dirty or approximately after every 3000 miles, simply follow the cleaning instructions that you can find in the service kit, allow the filter to dry, re-oil and you are ready to use your filter again, like new! DNA AIR BOX COVER STAGE 2 – YAMAHA XT 660R/X. When a Stage 1 Air Filter is not enough for your vehicle and you do not want to replace your air box, you can choose our Stage 2 intakes for better gains. FOR FULL ENGINE PROTECTION & MAXIMUM PERFORMANCE THIS SHOULD BE USÉD IN CONJUNCTION WITH DNA AIR FILTER P-Y6E04-01. Option of chrome cover to improve aesthetics. This DNA® filter is designed as a High flow filter for road and off road use. Special Oil Oil that is uséd to impregnate the cotton is a very special grade developed by the DNA R&D department after intense testing and produced by one of the world’s best oil companies. No additional information at this time. You might also like. DNA Performance Oval Air Filter Set Kawasaki Zephyr ZR1100 1992-99. DNA PERFORMANCE AIR FILTER – SERVICE KIT. DNA CRANK CASE VENT FEMALE OVAL RUBBER TOP 18mmID. Termignoni Silencer / DNA Filter Bundle – YAMAHA TENERE 700 2019-22.