H&R 81-91 Mercedes-Benz SEC/SEL 6 Cyl/V8 W126 Sport Spring (w/Self-Leveling/Non Diesel) Suspension>Electronic Lowering Systems The muffler features BORLA®'s Polyphonic

The muffler features BORLA®'s Polyphonic Exhaust Harmonizer technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean

this intercooler kit is the ultimate cooling upgrade for drivers who demand more power

9 Liter A500

This tank was designed to work with the stock expansion tank cap and includes an overflow nipple on the fill neck for adding an additional coolant tank so your Mustang is NHRA legal

This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points

H&R 81-91 Mercedes-Benz SEC/SEL 6 Cyl/V8 W126 Sport Spring (w/Self-Leveling/Non Diesel) Suspension>Electronic Lowering Systems The muffler features BORLA®'s PolyphonicSport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R'sport Springs lower the vehicle's center of gravity and reduce body roll for better handling. The progressive spring rate design provides superb ride quality and comfort. A lower wind resistance signature will make the vehicle more streamlined and improve gas mileage. If you are only looking to improve one part of your vehicle's