The build time for a custom steering wheel is approximately 5-6 weeks. No core exchange/sent-in is needed, the price includes a new steering wheel. The ultimate custom carbon fiber steering wheel: 100% Hand-crafted carbon fiber steering wheel based on your specifications. This steering wheel is deemed to put a smile on your face every time you step into your car. Race-inspired ergonomics. Flat bottom for a modernized look and better legroom. Only the finest quality materials. 2x2 3K carbon fiber cloth, authentic Italian Alcantara, you name it. Attention to detail, every stitching you see is hand-sewn. No core exchange/sent-in is needed, the price includes a new steering wheel. Please feel free to contact us for any specific customizations you'd like to add to your steering wheel that are not available on our steering wheel builder. Instagram: @Zencarbonfiber, Facebook page: Zencarbonfiber, or email: info@zencarbonfiber.com If any electronic components(buttons, harness, etc) are included, they are included as complementary, which means the wear/working condition varies, and swapping on your OEM buttons/paddle shifters is mandatory. Airbags are not included. By purchasing, the customer has agreed to our terms and conditions