BMW 135i/335i 4″ Catless Downpipe for N55 Single Turbo

Description

• Ultra low backpressure 4″ downpipe
  23HP gain over stock at the same boost level with no tuning devices
  30TQ gain over stock at the same boost level with no tuning devices
  Straight shot design for zero restriction and high velocity
  Largest possible tubing for quicker spool
  Zero taper on flange at turbo for largest possible pressure differential
  Largest downpipe on the market, uses more 4″ tube than the competition
  Reinforced brackets for proper support on the turbo and manifold assembly
  100% Made in the USA
  Optional: Ceramic coatings normally used for race pistons for much greater thermal barrier protection compared to exhaust coatings
  What’s in the box:
  Qty 1- Berk Technology 4″ coated stainless steel downpipe
  Qty 2 – Berk Technology Gaskets
  Qty 8 – Nordlock Vibration Proof Locking Washers
  Qty 4 – Mounting Bolts
  Qty 4 – Flange Nuts