Description
- 304 Stainless Steel Tubing
- Stock 93 dB @ 7,000 RPM/ M4 dB 108 @ 7,000 RPM
- Saves 11.5 lbs Over Stock System
- Includes M18 and M12 O2 Bungs
- Stock Max Horsepower 171.42 @ 12,760 RPM/ M4 Max Horsepower 176.32 @ 12,890 RPM (All dyno numbers are on bone stock motorcycle with pump gas)
- Comes Pre-installed with Q5 Quiet Insert
- Stage 2 (Q4) Quiet Insert Sold Separate
SU9164 made by M4
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