Product Summary

4 to 1 Header Tube Type, Painted, Standard Flange Style

  • Primary tube diameter goes from 1-3/4 to 1-7/8"
  • Designed specifically for the GM 604 crate engine
  • Collector has a 3-1/2" diameter and is 9" in length
  • Will fir the Arrow, BMS, Elite, GRT, SSR, TDR Chassis
  • These 4 to 1 style header are made entirely of steel for maximum strength

Key Specs

MFG. Part #IDM604S1G
Header Tube Type4 to 1
Material TypeSteel

Need To Know

This Product Will Ship Free

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy


Finding any advantage is key to success in dirt track racing; Be the first to victory lane with Beyea Headers! A proven performer and a name known around the world - Beyea Headers are a tried and tested solution to your horsepower problems. 15 years of dedicated research and design has gone into each and every header from Beyea Headers to make sure that you get every last bit of useable power out of your engine to propel you to the top step of the podium!

  • Includes gaskets
  • Open modified headers
  • Collector Length: 3-1/2" x 9"
  • 1-3/4" x 1-7/8" stepped headers
  • Fits Arrow, BMS, Elite, GRT, SSR, TDR Chassis

Guides & Documents

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #IDM604S1G
Header Tube Type4 to 1
Material TypeSteel
Flange StyleStandard
Primary Tube Diameter1-3/4 to 1-7/8"
Exhaust Port ShapeD-port
Collector Diameter3-1/2 Inch
Collector Length9"
Hardware IncludedNo
Gasket(s) IncludedYes
Sold in QuantityPair
NotesFor GM 604 Crate Engine. Single step.
Collector Attachment TypeSlip fit
Collector Reducers IncludedYes
Collector Reducer Exit Diameter2.75"