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"