• JackSpania Racing B Series Bisi Style Header V2 4-1 merge collector for B18 B20 engines, showing polished stainless steel exhaust part
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showing polished exhaust header with merge collector
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, shown in the image
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showcasing polished exhaust manifold component.
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showing polished exhaust header with merge collector
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showing polished exhaust collector with welds
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showing the exhaust header with polished pipes.
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showing polished exhaust manifold with welds.
  • JackSpania Racing B Series Bisi Style Header V2 4-1 Merge Collector for B18 B20 engines, showing polished exhaust manifold with welds.
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B Series Bisi Style Header V2 4-1 Merge Collector B18 B20

B Series Bisi Style Header V2 4-1 Merge Collector B18 B20

$309.95 USD
$309.95 USD
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🚚 Shipping Information: Our shipping timeline starts after complete shipping processing. Our shipping processing takes 1-3 business days.

  • B-Series header features a true 4-1 merge collector for more equal exhaust flow.
  • This header delivers the best peak horsepower gains while utilizing a 2-piece design.
  • This is ideal for all forms of competition; Autocross, Drag racing and road racing.
  • Recommended for 1.8L - 2.0L engine displacements.
  • Made of 304 Brushed Stainless steel
  • True 2.65 (ID)inch collector outlet
  • Hand TIG Welded CNC-ed machined manifold flange
  • One year warranty 18G on the 304 S/S.
  • Measured at .049" to .050" OEM spec header gasket
  • OEM spec donut gasket 
  • Two piece design Half core radiator must be used

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