185-00871 LAPTORR EXHAUST down pipe for S55

185-00871
downpipe(Catalyst-less)

Applicable model
BMW F87-M2 Competition (S55 engine)
BMW F80-M3 (S55 ENGINE)
BMW F82-M4 (S55 ENGINE)
　
It is a straight type without the first catalyst located just after the turbine.
The stock catalyst is very harsh on the engine environment because the exhaust pressure is at its highest point, and tuning to increase engine power increases harshness and may cause the catalyst to melt or knock. The straight type downpipe lowers exhaust pressure, improves exhaust passage, and greatly reduces the load on the engine.

Catalyst-less
・Warning lights up when the monitoring side lambda sensor is functioning.
Avoid starting the engine in areas with inadequate ventilation.
Non-inspection / Competition parts (Japan)

Note on ordering
This product is shipped in the order it is ordered, so it may not be able to be shipped immediately even if it is ordered, since it can be ordered even while the product is out of stock.
Please feel free to inquire about the delivery date and waiting order.