Allstar Performance Spring Pre-Loader Wrench - Fits Body H77703FS Billet Fuel Pump Speed Controller

Billet Fuel Pump Speed Controller

1973-1974 Oldsmobile Omega

Utilizing activated carbon

Ford / Lincoln / Mercury / Mazda 2006-2013

Simpson's DNA products are designed with athletic performance-enhancing features engineered to reduce weight and young driver restrictions

Allstar Performance Spring Pre-Loader Wrench - Fits Body H77703FS Billet Fuel Pump Speed ControllerPre loader allows use of a softer spring rate that is pre loaded at ride height. The pre loaded spring will have less rate increase as the suspension travels. For example, a 150 lb. in. spring can be preloaded to 400 lbs. at ride height, but still only increases at a rate of 150 lb. in. as suspension travels. The entire unit may also be exchanged with another unit with a different rate spring pre installed to allow spring rate changes without