The BLOX Racing Hi-Flo header is specifically designed for Honda B-series engines with 1.6L – 1.9L in displacement.
The BLOX Racing Hi-Flo header is a 2-piece, 4-2-2-1 design and features innovative step-up exhaust tubing, TIG-welded stainless steel tubing and flanges and true 2.5″ exhaust collector.
Specifications – Step-up Piping Sizes
1.6″ – 40.6mm
1.8″ – 45.7mm
2.0″ – 50.8mm
2.5″ – 65mm