HKS Exhaust technology, which is the know-how of long-time development, targets to pull out 100% engine performance with the exhaust manifold. A lot of different approaches were tried for each vehicle to keep performance for the middle rpm range and to improve horsepower at high rpm.
- HKS RACE PART solely for use on purpose-built race cars, never to be used on a motor vehicle
- Toyota Altezza [SXE10 MT] (1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005)
Reduced pressure with Bypass Pipe (Racing Header) - When a strong vacuum is created, to the contrary, there also is strong pressure. Cylinder pipes are connected with a Bypass Pipe to reduce pressure as minimum as possible. The rhythm of "Pressure" and "Vacuum" inside the manifold is controlled. Besides, a number of bypass pipes and positions are designed to optimize for each engine characteristics. It enables to reduce of pressure without change of vacuum. Therefore, there is no drop in torque. The engine will have Inertia Exhaust Gas Efficiency (Efficiency to increase the horsepower of NA engine) and flat torque characteristics, which enables easy drivability.
Advantage of 4-2-1 Straight Junction (Super Header) - HKS selected 4-2-1 junction design that has the best result for street use from the study of various data about a lot of engine characteristics and exhaust gas pulse. 4-1 Junction type has a shorter length to the junction part and it is better for competition purposes that require performance only at a high rpm range. But it has too little torque at a low rpm range for street driving. HKS' Straight Junction Design accelerates exhaust gas with exhaust gas pressure and it pulls out combustion gas. Exhaust gas efficiency is improved with the design.
In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on final sales, special orders, opened, installed, incomplete, or otherwise used products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.