Our house brand ko4s rated for 26 psi and covered by a one year unlimited mile warranty, a great entry level option for your stage 3 build. We use melett chra along with Proprietary 1 bar wastegates pre set to 9 -12 psi for proper boost levels post tune. Each set also includes an install kit. Professional installation recommended. Please note wastegates are set prior to shipping at 9 psi however please verify post install both are set to 8-12 psi depending on tuners recommendation.
If items must be returned for reasons other then failure a 90 day return policy post purchase is aloud. Buyer is responsible for shipping and all items must be returned in their original packaging. A 20% restocking fee applied.