"Black Friday" Promotion Rules:
1 Categories with a 20% discount for retail customers:
- Downpipes
- Accessories
- Exhaust tips
- Silencers
- Exhaust systems
2. Categories with a 20% discount for retail customers:
- Catalysts
3 The promotion runs from November 26 2021 to November 29 2021 inclusive
4. The customer cane take advantage of the discount any number of times.