- Famous proven tunable disc based performance.
- Add or subtract discs to optimize power and sound
- 1.75" primaries flow into 2.5" true collector for huge torque gains
- 3.5" muffler body flares out to 4"
- 2.5" performance core with 'pillow pack' insulation
- Supplied with discs, closed end cap and trim ring
- Include detailed instructions and all necessary mounting hardware
- Add 4" discs to increase horsepower, exhaust tone and flow
- Subtract 4" discs to reduce sound and increase low-end torque
- SuperTrapp OEM # 828-74692
Note
Fits Harley-Davidson Dyna 12-17
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