Клапани BMW N55 S55

Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.

The Super Alloy Engine valves represent the highest level of sophistication in valve technology. These valves are designed to handle the extreme heat requirements and punishment of today’s Nitro Fuels, Supercharged, Turbocharged, Nitrous Oxide, and Marine race motors.

Intake valves from FERREA for all BMW S55 engines.

The BMW standard valves have the major disadvantage that they can break on engines with significant power increase or long mileage.
The standard valves are hollow inside and sodium cooled. With the very thin valve stem of only 6mm there is not much material left to protect the valve!

The kit includes 12 valves.

The valves from FERREA offer the following advantages:

• High temperature resistance
• Strong tear resistance
• Special heat treated material
• High strength material
• Quality and workmanship at the highest level

Competition Plus valves from Ferrea are made of an extremely heat resistant alloy.
Ferrea valves are suitable for turbocharged and nitrous injection engines where high exhaust gas temperatures are used.

Ferrea is also used in major racing series such as Formula 1, Indy, Nascar and Drag Racing.

When installing a new Dreinut valve, we always recommend installing new OEM valve wedges. This will ensure that the valve is seated properly. If used wedges are used, they may have seized and the valve will not seat properly and will have play.

Super Alloy exhaust valves from FERREA for all BMW S55 engines.

The standard BMW valves have the major disadvantage that they can break on engines with significant power increase or long mileage.
The standard valves are hollow inside and sodium cooled. With the very thin valve stem of only 6mm there is not much material left to protect the valve!

The kit includes 12 valves.

The valves from FERREA offer the following advantages:

• High temperature resistance
• Strong tear resistance
• Special heat treated material
• High strength material
• Quality and workmanship at the highest level

Ferrea Super Alloy valves are made of an extremely heat resistant alloy.
Ferrea Super Alloy valves are suitable for turbocharged and nitrous injection engines where high exhaust gas temperatures are used.

Ferrea is also used in major racing series such as Formula 1, Indy, Nascar and Drag Racing.

When installing a new Dreinut valve, we always recommend installing new OEM valve wedges. This will ensure that the valve is seated properly. If used wedges are used, they may have plugging and the valve will not seat properly and will have play.

The exhaust valves have a 1mm reduced stem in the tip area to allow the use of the OEM rocker arm.

Product detailed specification Model number BMIVN-1055S Head diameter 32.00mm Stem diameter 4.97mm Length 104.9mm Material Black nitrided stainless steel Fits for BMW E60, E90, E91, E92, E93, E82, E88, E89, X6, Z4, F01 - 3.0 (N55B30, S55B30)

Product detailed specification Model number BMEVI-1055S-HS Head diameter 28.00mm Stem diameter 5.96mm Length 112.9mm Material Sodium filled Fits for BMW E90, E91, E92, E93, E82, E88, E89, X6, Z4, F01 - 3.0 (N55B30, S55B30)

Spring data:Seat pressure - 75lbs @ 36.50mmOpen (lift) pressure - 155lbs @ 10.00mmSpring coil bind - 23.20mmMax lift - 12mmRate - 8 lbs./mm Wide end spring outer diameter - 24.40mmWide end spring inner diameter - 17.60mmNarrow end spring outer diameter - 21.00mmNarrow end spring inner diameter - 14.30mmKit includes:Single springs - 24 pcs. SPR-FE20N54-BERretainers - 12 pcs. RET-BMN54-TI (5mm)Retainers - 12 pcs. RET-BMN54-TE (6mm)