Add this Kevlar composite chin spoiler air dam under the RSR type bumper for greater aerodynamic results and an aggressive look. This is the spoiler that was used on Peter Greg's factory race car. Fits Bexco Automotive Part #4. Average weight is under 3 lbs. Note: It can be made to fit RS front bumper (Bexco Automotive Part#3) with body shop modifications to slightly shorten the width.