AA CONCEPTS CO
BMW F8X M3 M4 GTX Carbon Fiber Rear Diffuser
- Fits: BMW F80 M3 & F82 F83 M4
- Comes In a 4pc Set Very Aggressive Rear Diffuser
- Rear Diffuser, (2)Side Extensions, Rear Undertray
- Direct Replacement For Your Boring Stock Diffuser
- No Hardware Is Included
- Professional Installation Is Highly Recommended