E28 Exhaust

This high performance cat-back system features mild steel construction with chrome over stainless twin tips and stainless inner baffles.  Deep exhaust note. Resonator and rear muffler must be purchased as a set.   

Resonator P/N 1883781503

Rear Muffler P/N 1883781506

OE type replacement exhaust systems at substantial savings over factory replacements. Mounts using original hangers and hardware. 1 year warranty.

Replacement High-Flow Catalytic Converters

Free flowing aftermarket units offer excellent value and performance at substantial savings over OE units. 5 year warranty on pipes, 2 year warranty on catalytic converter.

Korman-Stahl Headers

These high quality headers provide a 6-10% power increase on stock engines, much more on high performance engines. Engineered for trouble free fit and long service. Also available with ceramic thermal barrier coating (described below) for additional performance, durability and improved appearance. Headers fit manual transmission models only and include oxygen sensor fitting.

533i, 535i, iS P/N 18215138LF3

Exhaust Manifold Porting

A careful porting and polishing of the exhaust manifolds. We then precisely mate the exhaust manifold gaskets to the exhaust manifold for maximum flow. Especially effective with Ceramic Thermal Barrier Coating. An excellent alternative where headers are not an option.

All 6 cylinder P/N LAB18213006

Ceramic Thermal Barrier Coating

From Aerospace technology comes this oven baked metallic/ceramic finish that is far superior to ordinary header paints. In salt spray testing where high temperature paints lasted 40-50 hours, the ceramic coating lasted over 5,000 hours. The ceramic thermal barrier finish also coats the inside of the pipe. The thermal barrier will reduce underhood temperatures and testing has shown horsepower gains due to combustion chamber stabilization and increased gas velocity.

All 6 cylinder P/N 182110016

© Korman Autoworks, Inc. 1997, 1998