Description
ApexBuilt® BMW F97 X3M & F98 X4M Resonated Race Downpipes offer...
• Perfect fitment, guaranteed.
• Drastically improved throttle response, quicker turbo spool, and an aggressive exhaust note.
• Estimated gains of 20-25+ wheel horsepower and 40-50+ TQ when installed on a vehicle that is not tuned.
• Estimated gains of 60+ HP and 100+ TQ over stock power levels when paired with an aftermarket ECU tune.
• T304 stainless steel construction
• Lifetime warranty
PLEASE NOTE:
These these parts are for OFF ROAD / RACE USE ONLY . They are not 50 state legal. Any of our catless race downpipes WILL NOT be sold in, or shipped to, the state of California.
Aftermarket tune and/or DME unlock required to prevent catalytic deficiency codes.