BERYLIUM VALVE SEAT RING SET VR38DETT (TA310A-NS01A) 4024 and tuning to enhance your

and tuning to enhance your M3's performance from the factory setup to 400 HP at the wheels

This cat-back performance exhaust system leaves the stock catalytic converters in place

anodized DW titanium (6-02-0216)

Maps are available for completely stock cars

BERYLIUM VALVE SEAT RING SET VR38DETT (TA310A-NS01A) 4024 and tuning to enhance yourThe function of which valve sheet is asked, is maintaining air tightness with a valve, and generally wear resistance is required. However, with the engine used by high rotation and high load, the cooling performance of a valve sheet becomes very important further, and it is greatly concerned with an engine output. When engine is high rotation and high load, it is impossible to achieve high output from the engine if cooling performance of the cylinder