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

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

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*** IMPORTANT NOTE: Order processing can take up to 1-2 business days. Shipping timeframes start after the order processing has been completed. ***

  • 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

Customer Reviews

Based on 2 reviews
50%
(1)
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50%
(1)
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A
Axel
doesn’t fit

Great quality and looks amazing and everything fits but the only issue
it won’t properly connect with my catalytic converter and That made my bolts not go through the holes

D
David Black
Absolutely amazing!

Bought the bisi style headers for my B16A3 and absolutely blown away by the quality and fitment. Absolutely would recommend and buy again.

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