How do we shut off "heat" which has a big influence on the performance of the engine? From among the various possibilities, we have continued the trial in every approach. However, the method that we arrived at in order to aim at "perfection" was to completely cut off the air introduction path from the engine room. In fact, normal(genuine) is this concept definitely. However, the normal state cannot become "perfection" because it is designed in various restrictions. The air intake system which gave the best performance and quality worthy of the name of the air intake specialist, is this “RAM AIR SYSTEM”. As for this, the efficiency was taken in consideration of the top priority efficiency, without being influenced by the above restrictions.

The original design which intercepted the loss caused by heat and was excellent in fluid efficiency.

The relation with the air cannot be avoided, because engine get power through "combustion". How quickly the clean air with high oxygen concentration and low temperature is supplied, this is the important factor of the combustion efficiency improvement (=performance up). As is generally known, there are many various dusts in the air. Therefore, it will inflict a big risk for an engine and auxiliary devices to inhale it directly without going through the air filter. However, the filter becomes the resistance of the inhalation, and occasionally becomes an obstruction of the combustion efficiency. The conflicting problem was cleared by adopting wet type filter made of a cotton of four layers which K&N has built during a long history. On the other hand, about the flow speed and the temperature at the time of inhaling, we succeeded in increasing the flow velocity in passing the filter by adopting a conic shape filter. Moreover, we used the limited space in the engine room as effectively as possible, and almost completely blocked the influence of the engine to the inhalation path of the air by the intake duct made of carbon. Besides, the shape of the intake duct has been calculated exhaustively, and it has designed so that the flow velocity gradually increases by ram pressure. The air intake that shows the true performance, not only form, is completed by test & try repeated many times based on a superior filter and abundant data.

Filter choice

Anymore, goes without saying about filter itself, we adopted high-density multi layer cotton made in the K&N company which is superior in a dust collection effect. We choose the filter of the most suitable shape which matches a character and the filter case shape of the vehicle. It is hard to be affected by the heat by carbon filter case that cut off heat, moreover speed at the time of the inhalation is elevated by the shape design of the filter part, by leaps and bounds filling-up efficiency is stabilizes and improves. Further, control performance degradation of high load consecutive intake.

Particular about duct

The product air intake duct that was made by carbon of handmade is lightweight, and strength does not have any problem, too. In addition, it was made the form of curve gradual as much as possible in limited space, and restrain inhalation resistance. However, even if the form is the same vehicle type, it is different by the presence or absence that have supercharger and It is the optimal form. This intake duct shows a chamber effect together with speed improvement by the lamb pressure, and even at the time of peak power outbreak, air sufficient with enough capacity is supplied. Also in the feel of a material of carbon there is no compromise. And we are particular about the beautiful appearance of the product itself.

Reliable quality

GruppeM RAM AIR SYSTEM of genuine product is attached the serial license plate to each, and merchandise manages by this serial number, and guarantee of quality for six months is given.
In late years, please be careful because a lot of copy products are sold

Reliable wearing performance

GruppeM intake kit of all is bolted with the fitting adapter of the exclusive design. It fits neatly and shapely as genuine, and a carbon intake duct gives off overwhelming presence. GruppeM RAM AIR SYSTEM is packaging in all including an adapter and hoses. Each part is indispensable to show the best performance.
※ Mounting is basically installed bolt-on. In some vehicle type, detaching the bumper may be required.


The K&N filter is recyclable by washing, so makes the wonderful long life possible. The filter washer without damaging cotton of a material, decomposes strongly and washes dirt permeated. After washing and drying, by infiltration of dedicated filter oil, performance of same level as new one is restored, and capability of a filter is shown 100%. In addition, unnecessary waste is not discharge, and by exhaust gas examination when it equips with a K&N filter, cleared regulation in all the countries of the world. So even the owner having high environmental awareness can be used at ease.

Spare filter

Product number PRICE (w/o Tax) Filter size
RF-3301A ¥16,000
RF-3018A ¥17,000
RU-1005 ¥11,300
RC-29600 ¥13,800
RC-3160 ¥15,300
RF-1002 ¥14,500
RU-0840 ¥10,500
RU-3480 ¥11,100
33-2264 ¥13,400
33-2733 ¥13,400
33-2166 ¥14,400