MASSIVE High Lift Performance Spring and Retainer Kits
MASSIVE High Lift Performance Spring and Retainer Kits
High Lift Valvetrain kit includes high rate springs and lightweight titanium retainers for maximum performance. A must for high boost, higher lift cams and high RPM use.
MACM'17060 - Zetec set - Compatible with 2.0 DOHC Zetec engine found in Ford Focus Escort ZX2 Contour Cougar Mystique Escpape Tribute MAriner
Will NOT Fit Focus with SVT
MACM'170xx - Duratec Set - Compatible with 2.0 2.3 2.5 Ford Duratec / Mazda MZR / Ford Ecoboost Engines Found in Ford Focus Escape Ranger Mustang Bronco Fusion Transit Connect Cmax etc ete - Mazda 3 5 6 MS3 6 Mazdaspeed CX-7
Chromium Silicon Spring material improves fatigue life
6AL4V Titanium retainers turned in house. 7 Degree lock taper
Zetec retainers are 1 gram lighter than OEM
Zetec Specs: Spring Pressure: Seat: 1.400" / 66 lbs / Nose: 0.950" @174 lbs / Coil Bind: 0.860"
Some Zetec castings may require slight opening up of spring pocket area for clearance. Contact Massive for service and/or tool.
Much lighter than kits that use steel / oem retainer such as Piper Kent Burton
Great replacement for now discontinued Crane comp Crower Ferrea
Duratec Specs: Spring Pressure: Seat: 1.400" @ 66 lbs / Nose: 1.000 " @161 lbs / Coil Bind: 0.860"