DNA Stage 2 Air Box Filter Cover for KTM 390 Duke features DNA's advanced FCD(Full Contour Design). The filtering efficiency is extremely high at 98-99% filtering efficiency (ISO 5011), with 4 layers of DNA Cotton.
The flow of this new DNA Stage 2 Air Box Filter Cover (DNA-P-KT3N20-S2) combined with the DNA Stage 1 Air Filter (DNA-P-KT3N18-0R) is very high, 95.99% more than the KTM stock application. DNA S1 & S2 Fcd air filter flow: 73.30 CFM (Cubic feet per minute) @1.5"H2O corrected @ 25 degrees Celsius. KTM stock paper filter: 37.40 CFM (Cubic feet per minute) @1.5"H2O corrected @ 25 degrees Celsius.
Kit doesn't include Stage 1 filter (sold separately).
Customer Reviews
Customer Reviews
The air filter is using the racing version of the 'sprint filter' and sub ECU is using rapid bike racing and my tuning bike.
In the previous setting after the low-speed corner of the track I'm currently riding, there was a slight torque delay in the previous setting, but in comparison, after setting the intake change after the replacement of the air filter housing, the reactivity was improved.
The maximum speed difference is not that big. Actually, I haven't done the maximum speed test. I don't think there's a big difference, probably considering the degree of acceleration at high speed.
It is a good product that can shorten lap time in terms of cost-effectiveness.
