Yamaha RD400 HiFlo Air Filter Upgrade – This is the unbaffled Eruopean spec version of RD400 air filter. This can be used in the USA spec RD400 as a performace upgrade but we recommend jetting up to 27.5 pilot and 140 main jet for stock bike with stock pipes (links below). This is a branded (HIFLO) paper element filter true to the original.
Pilot jets: Pilot Jets
Main Jets: Main Jets
Reviews
There are no reviews yet.