Akrapovic Rear Carbon Fiber Diffuser High Gloss for 2021 BMW M4(DI-BM/CA/9/G) 1556 Year Make Model Submodel Notes

Year Make Model Submodel Notes 1991 Buick Roadmaster Engine: 5

Horsepower and torque gains are substantial and immediate (no adaptation required)

and PWM controller without additional controllers

The APR Power Control Unit (PCU) is an inline tuning device designed to increase the horsepower and torque of the vehicle

Dyno Proven gains of up to 7 hp and 7 lb-ft

Akrapovic Rear Carbon Fiber Diffuser High Gloss for 2021 BMW M4(DI-BM/CA/9/G) 1556 Year Make Model Submodel NotesFor extra visual impact, there is the option to add a hand crafted carbon fibre diffuser. Produced in house, this lightweight accessory with ABE type approval is designed to show off the tailpipes of the Akrapovic exhaust at their absolute best. Features: Completely new design High gloss or Matte finish Gives the rear of the M4 a more aggressive and sporty feel