45 Degree Elbow, 4.00" I.D. x 3.50" Leg Length - Black 2001 pontiac firebird while the rear kit features

while the rear kit features a 225 lb/in spring rate

solid 38mm bar stock

Vorshlag upper spring perches are included and built to fit the strut style you select (see "Spring Perch" drop down option menu

Centerforce billet aluminum flywheels are SFI-certified

This adjustment is made at the rear of the muffler with a wrench by either moving the valve in or out

45 Degree Elbow, 4.00" I.D. x 3.50" Leg Length - Black 2001 pontiac firebird while the rear kit featuresVibrant Performance 45 Degrees Aramid Reinforced Silicone Elbows feature tight radius bends, making them ideal for congested engine bays that are typical in late model cars. All Vibrant Performance Silicone Elbows feature High Temperature Resistant Aramid Reinforcement Fabric between each layer of silicone which allows for an impressive Operating Temperature Range of 75 Degrees F to 392 Degrees F ( 60 Degrees C to 200 Degrees C). Suitable for Water,