New product! Tanabe Sustec Under Brace for 2013 Honda Civic Sedan Si. This 2-point brace helps reduce chassis flex and increase stability. Shown: Tanabe Sustec Under Brace for 2013 Honda Civic Sedan Si Application: 2013 Honda Civic Sedan Si Part Number: TUB172F MSRP: $118.00 Website: Tanabe-USA.com Related Images: