HKS HKSTUDIE-EX001 Exhaust System HKSTUDIE for BMW M3 (G80) / M4 (G82) 2021-

• A specially designed tail tips paid homage to the legendary "BMW 3.0 CSL“. It has a thick-walled slash-cut tail tips, emphasizing the texture of the edges, and the surface is blasted to express a dull glossy finish. Features a sound deadening inner slits to create a one-of-a-kind tail tip design.
• The OEM exhaust of the G8X generation M produces a sporty sound that is distinctive of the M series. Since replacing only the main muffler does not produce a significant change in sound, the HKSTUDIE exhaust features a layout that deletes the middle muffler. The unique sound tuning based on frequency analysis has achieved gentle yet powerful sound.
• Although it gives off a powerful sound, it still meets the strict sound regulation of UN ECE-R51.03 Phase 2. This products can be used safely for daily use and is compliant with Japan's vehicle inspection regulations.
• Optimized pipe layout and a main muffler without restrictions reduce exhaust pressure by up to 35% compared to the OEM muffler. This results in increased boost responsiveness and higher output at high RPM range, and increases power output by up to 5kw and torque by up to 15Nm.
• By manufacturing in-house at our factory in Japan and conducting strict quality control, we are able to offer a 2-year or 30,000 km product warranty from the time of purchase.

35% reduction in exhaust resistance (max.)

By optimizing the layout, adopting a straight pipe without squeezing and the internal structure of the main muffler without restrictions, exhaust resistance is significantly reduced compared to the OEM exhaust as shown in the graph above as a result of in-house testing.

Increases output +5kw and torque +15Nm

Lowering exhaust pressure leads to higher engine power output. As shown in the graph on the right, the response of the turbo boost is improved in the low rpm range, and torque is increased by up to 15Nm. As for power output, the better exhaust flow leads to more power at higher engine speeds, increasing the power by up to 5kw. All tests at our headquarters were conducted using vehicles in stock condition except for the exhaust system. The difference in power output between OEM and HKSTUDIE exhaust systems will widen further when the ECU is analyzed and tuned to increase power output.