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Honda B-Series Stainless T304 Hi-Flo Header - 4-2-1 Tri-Y


WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

*This item is not available for purchase in California*

BLOX Racing Hi-Flo [commonly referred to as 'small tube'] exhaust headers are specifically intended for Honda B-series engines between 1.6L-1.9L in displacement. Hi-Flo exhaust headers are 2-piece and feature a 4-2-1 (Tri-Y) design using innovative stepped exhaust tubing.

16-gauge T304 is used to construct these high performance, stainless steel headers, including T304 cylinder head and collector flanges. All headers are expertly TIG-welded to ensure durability and reliability each time you start up your engine. Spent exhaust gases exit through true 2.5" exhaust collectors.

BLOX Racing Hi-Flo headers are designed to widen midrange power and take advantage of peak horsepower. 


Hi-Flow Header Specs

  • T304 stainless steel
  • Mandrel-bent, TIG-welded
  • 10mm thick cylinder head flange
  • 8mm thick collector flange
  • 2-piece, includes header springs
  • 4-2-1 Tri-Y design
  • Step-up Piping sizes (OD):
    42mm - 45mm - 51mm
  • 63.5mm (2.5") Collector outlet