QA1 Mustang II Coil-Over Spring - 2.5/3.5 x 8 600# 121013 HP4 Filters

HP4 Filters

Lightening the front end of your 2005-2014 Mustang is easy with a radiator support from BMR Suspension

They typically will reduce the sound level 2-3 decibels

of wire for installation hookup to the Roll Control

it can be installed without any trimming or modifications

QA1 Mustang II Coil-Over Spring - 2.5/3.5 x 8 600# 121013 HP4 FiltersQA1's Mustang II Pro Coil Kits feature polished and chrome plated springs. They have a 3. 5" upper I. D. and 2. 5" lower I. D., these springs have an 8" free length and are offered in four rates. Made with the highest quality materials, QA1'springs are strong, consistent and have a long life. All QA1'springs come with a lifetime guarantee to remain within 2% of their original free height and rate, so you know you're getting quality springs with QA1.