1999 Honda Civic Si

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Honda · Civic · 1996-2000 EJ/EK/EM1

What this install demonstrates

A chassis-mounted quick-release splitter system with support rods and removable diffusers on a 1999 Honda Civic Si.

Front view of blue 1999 Honda Civic Si with a custom birch splitter and support hardware

Products used

Professional Awesome 1994-2001 Acura Integra & 1992-2000 Honda Civic Quick Release Splitter Support System1994-2001 Acura Integra & 1992-2000 Honda Civic Quick Release Splitter Support SystemProfessional Awesome Splitter Support Rods – PairSplitter Support RodsProfessional Awesome Large, High Downforce Splitter Diffusers – PairSplitter Diffusers

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Customer Notes:

Additional components: Doryoku front crash bar with dual tow hook and splitter-rod mounting holes; custom 3/4-inch birch plywood splitter.

To mount the outer splitter support rods, I drilled new holes in the chassis and used socket-head screws with lock washers to keep the clevises tight and secure. I also used rivnuts and epoxy to fasten the splitter diffusers to the plywood, making them easier to remove and reinstall when it is time to rebuild the splitter.

Gallery:

Front view of blue 1999 Honda Civic Si with a custom birch splitter and support hardwareFront view of 1999 Honda Civic Si showing a Doryoku crash bar and four splitter support rodsClose view of Civic Si Doryoku crash bar, quick-release splitter mounts, and support rodsProfessional Awesome quick-release splitter receiver mounted beneath a 1999 Honda Civic SiProfessional Awesome splitter diffuser and quick-release receiver on a Civic Si birch splitterSide splitter support rod mounted between the Civic Si chassis and custom birch splitterRemovable Professional Awesome splitter diffuser and support rod on a 1999 Honda Civic SiClevis attachment for a side splitter support rod on the 1999 Honda Civic Si chassisUpper chassis fastener for a side splitter support rod on a 1999 Honda Civic SiDoryoku front crash bar supporting splitter rods on a 1999 Honda Civic Si
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