Pro-Werks rear wings are CNC machined from billet aluminum ribs using wind tunnel-proven NACA wing profiles with a 15" chord length. Internal aluminum reinforcement tubes provide additional strength and the aircraft-grade aluminum skin is 0.032" thick. Available in 36"–48" wide, with choice of several tip styles. Construction Ribs: CNC machined billet aluminum, NACA wing profile Chord length: 15" Skin: Aircraft-grade aluminum, 0.032" thick Internal structure: Aluminum tubes for added strength Tip plates: Removable and interchangeable Mount Tab Specifications Tab thickness: 3/16" Front hole diameter: 3/8" Rear hole diameter: 5/16" Hole spacing: 5-7/8" Configuration Options Span sizes: 36", 40", 44", 48" Mount Centers: 8", 15", 17-1/4" &18" Tip styles: A, B, C, D, E, or F profile (equal aerodynamic performance) Notes Ribs are not available separately Custom built wings available as special order Rear Wing Mounting Instructions (PDF) Customer Comments "I chose the Pro-Werks wing for a number of reasons: infinite adjustability, high-quality construction and hard data on angle of attack versus pounds of down-force at known speeds." "From day one the jet truck was extremely stable. It had no 'lifting' of the rear end which is so common with jet trucks. It's no BS...it works!" – Dave ModderOwner/Driver of The Dragon's Fyre Jet Truck