Blox Racing 4.0inch Composite Velocity Stack (BXIM-00307) 2521 Improves power and sound by

Improves power and sound by increasing cold air flow to the engine by 20% in conjunction with a BMC F1 Air Filter

Hose Inside Diameter: 1" (25mm)

Up to 50% lighter than original OEM trunk lid

The Seibon ST-style carbon fiber hood for the 1993-2002 Mazda RX-7 is a performance-oriented body panel designed to reduce weight and enhance style while maintaining strength and durability under demanding conditions

Blox Racing 4.0inch Composite Velocity Stack (BXIM-00307) 2521 Improves power and sound byBLOX Racing velocity stacks incorporate race proven intake technology into a product designed for daily driven vehicles. andnbsp; Velocity stacks are designed to optimize and maximize air flow rates entering the induction system. BLOX Racing velocity stacks are ideal for naturally aspirated and turbocharged applications. andnbsp; Match either with a high performance BLOX Racing air filter. BLOX Racing composite velocity stacks are injection molded