GSC Power-Division Super Alloy Exhaust Valve Set of 8-30.5mm (STD) for 4G63T (gsc2005-8) DRIVE_AWD 950 rpm when tested on

950 rpm when tested on the Akrapovic dyno against a Toyota GR Yaris with a standard stock exhaust

To take it one step further

the HPS silicone post MAF air intake tube delivers dyno-proven performance gains +6 Whp

Attack Stage 2 Aluminum Polished Cold Air Intake System with Pro Dry S Filter (TA-4105P) by Takeda

Suits: Honda DC5

GSC Power-Division Super Alloy Exhaust Valve Set of 8-30.5mm (STD) for 4G63T (gsc2005-8) DRIVE_AWD 950 rpm when tested onFor those running high horsepower, high EGT set ups that need a valve that will last in 2000 F conditions. The Super Alloy Exhaust valves have chrome polished stems to create a smooth, durable finish for added life and better lubricity, especially when paired with the GSC Manganese bronze valve guides. Strength, heat resistance, and performance are engineered into every valve. Under head dish is maximized for weight savings while swirl polished and