MetalCloak Jeep JK Wrangler 3.5″ Game-Changer Suspension & Lift Kit (A1235*) – for Jeep Wrangler JK important kit without shocks – click related products and select shocks.
Game-Changer 3.5″ is MetalCloak’s mid-arm suspension kit, designed for high articulation, correct geometry and predictable handling of the Jeep JK on and off-road. The system combines True Dual Rate springs with adjustable Duroflex articulated control arms and Durotrak guide rods.
The kit is configurable for shocks (including RockSport Black, Fox or 6Pak options) and is designed for maximum suspension travel up and down. In the package you also get solutions to support travel and safety: adjustable buffers, extended brake lines and front/rear stabilizer links.
CompatibilityJeep Wrangler JKLift height3.5 “Kit typeMid-arm (complete suspension system)Product IDA1235*Major benefitsLarge articulation and axle control thanks to Duroflex joints (self-centering design, high tolerance to skew) – suspension works freely without unnecessary “binding”.Stabler daily ride and better vibration damping (NVH) thanks to Duroflex solutions and Durotrak bushings in guide rods.
True Dual Rate springs for smoother performance characteristics (comfort and control in small bumps + support under load).Adjustable bump stops front and rear – ability to adjust stroke limitation to suit car and tire configuration.
Pitch and safety support components: extended brake lines and front/rear stabilizer links.
Design for maximum up and down travel (UP/DOWN travel) with geometry refined for real off-road performance.
Component system described by the manufacturer as compliant with FMVSS 126 requirements in the specified test configuration. Kit contents – preview System kit – suspension components shown in manufacturer’s graphic.
What’s in the kitComplete adjustable control arms with Duroflex joints (front and rear).True Dual Rate springs (front and rear).Isolators for front springs.
Durotrak track bars – front and rear.
Rear track bar bracket.
Adjustable buffers (bump stops) – front and rear.
Extended brake lines – front and rear.
Stabilizer links – front and rear.
Shock absorbers and shock absorber accessories – not part of the kit should be added. Specifications / factsDuroflex joints: vulcanized elastomer (proprietary) with DuPont™ Kevlar® fiber; self-centering, serviceable design; high tolerance for skewing (34°).Materials (per manufacturer’s specifications): guide rods – 4130 Solid Chromoly; rod bracket – 3/16″ hot rolled steel; bumpers and insulators – thermoset elastomer; brake lines – braided stainless hose; coating of steel components – Gold Zinc.
Adjustable bumpers: height adjustment from 1″-4″ without removing springs (per manufacturer’s description).Brake lines: the kit description states “JK Wrangler Replacement Brake Lines, 24.5″.” Duroflex joint concept (comparison) Graphic from the manufacturer showing the Duroflex concept compared to typical solutions. Duroflex with Kevlar fiber – component preview Manufacturer’s photo – Duroflex joint (version with Kevlar reinforcement). Quality control of control arm geometry – comparison Manufacturer’s graphic – comparison of articulation settings in control arms. Articulation range – Duroflex (visualization) Manufacturer’s graphic – maximum articulation for Dual Duroflex layout. Articulation range – typical Clevis/Flex arrangement (visualization) Manufacturer’s graphic – example of working range for alternative joint type.
Technical data – control arm specifications (by manufacturer)JK Wrangler Lower Front (SKU #7001): CNC machined; 1/4″ wall DOM steel; 1.625″ OD; threaded forged ends; precision locking nut; Gold Zinc plated; Duroflex joint on both ends.
JK Wrangler Upper Front (SKU #7002): CNC machined; 3/16″ wall DOM steel; 1.25″ OD; 3/16″ steel clevis; precision locking nut; Gold Zinc plated; Duroflex joint; threaded forged ends.
JK Wrangler Lower Rear (SKU #7003): CNC machined; 1/4″ wall DOM steel; 1.625″ OD; precision locking nut; Gold Zinc plated; Duroflex joint on both ends; extended 5/8″ for better axle positioning; threaded forged ends.
JK Wrangler Upper Rear (SKU #7004): CNC formed; 3/16″ wall DOM steel; 1.5″ OD; precision locking nut; threaded forged ends; design for larger tires; Gold Zinc plated; Duroflex joint on both ends; “lengthened” version for axle positioning. Front lower control arm – drawing/specification Graphic of manufacturer – control arm specification 7001. Front upper control arm – drawing/specification Graphic of manufacturer – control arm specification 7002. Rear lower control arm – drawing/specification Graphic of manufacturer – control arm specification 7003. Rear upper control arm – drawing/specification Graphic of manufacturer – control arm specification 7004. Forged threaded ends – details Manufacturer’s photo – control arm end details.
True Dual Rate Coils – facts and graphicsTrue Dual Rate: dual rate construction designed for stable ride and height control under load, with long free length for long range operation. True Dual Rate – spring operation at different heights Manufacturer’s animation showing True Dual Rate spring operation. 4-door springs – front (specification) Graphic of the manufacturer – specification of the 4-door spring front. 4-door springs – rear (specification) Manufacturer’s graphic – specification of 4-door spring rear. 2-door springs – front (specification) Manufacturer’s graphic – specification of 2-door springs front. 2-door springs – rear (specification) Manufacturer’s graphic – specification of 2-door springs rear.
Durotrak – axle guidance and NVH reductionHDurotrak: two-piece elastomer bushing, designed for NVH reduction and better steering feel; installation without a press (according to the manufacturer’s description).Track bars: the manufacturer emphasizes the design for ground clearance and suspension work both on top and at crank. Durotrak – bushing animation Manufacturer’s animation showing Durotrak bushing design. Track bar front – forged end (installation preview) Manufacturer’s photo – forged end of track bar. Track bar front – construction (graphic) Manufacturer’s graphic – description of track bar front construction and clearance. Track bar rear – hi-clearance (graphic) Manufacturer’s graphic – track bar rear in hi-clearance version. Rear track bar mounting bracket – preview (graphic) Manufacturer’s graphic – rear track bar mounting bracket.
Bumpers and brake lines – technical graphics Front adjustable bumpers – preview of components Manufacturer’s graphic – front adjustable bumpers components. Rear adjustable bumpers – preview of components Manufacturer’s graphic – rear adjustable bumpers. Brake lines – cross-section and layers Manufacturer’s graphic – braided line construction.
Shock mounts – outboard shock mountOutboard front lower shock mount (according to manufacturer’s description): offset lower shock mount from frame for greater clearance for suspension work; set of grade 8 bolts; 3/16″ laser-cut and CNC bent steel components; Gold Zinc Chromate coating.
Manufacturer’s note: with OE rims, 2″ spacers may be needed for proper clearance (condition applies to this component). Outboard shock mount – animation of the work/idea of the solution Manufacturer’s animation showing the concept of the outboard shock mount.
Shock options (according to the manufacturer) – media and facts6Pak: the manufacturer describes this option as providing a very large shock travel relative to the length when folded; an option for more powerful off-road use (rock crawling / extreme trails).RockSport Black Reservoir: remote reservoir shocks, tuned for True Dual Rate springs; digressive valve (according to the manufacturer’s description).RockSport Black Adjustable Reservoir: aluminum reservoir shocks, 8 compression settings; according to the manufacturer’s description, each “click” increases compression force by an additional 15%.Fox 2.0 Performance Series: shock option described as bolt-on replacement in certain kit configurations. 6Pak – stroke animation (compression) Manufacturer’s animation – 6Pak shock operation. RockSport – stroke animation (compression) Manufacturer’s animation – operation of RockSport shock absorber. RockSport Black – shock absorber preview Manufacturer’s photo – RockSport Black Reservoir. RockSport Black Adjustable – compression adjustment (8 settings) Manufacturer’s animation – RockSport Black compression adjustment (8 clicks). RockSport Black – hose to reservoir (braided hose) Manufacturer’s graphic – braided hose (connection of shock absorber to reservoir). RockSport Black – recessed cap (animation) Manufacturer’s animation – “inner recessed cap” detail. Fox – preview of the shock absorber (option) Manufacturer’s photo – Fox (option in selected configurations).For whom / applicationFor those building a Jeep JK for cross-country and off-road driving, but without sacrificing control and stability on asphalt.
For users who want a “complete system” (control arms + springs + axle guidance + buffers + brakes) instead of mixing random parts.
For configurations where long suspension travel (UP/DOWN travel) and predictable geometry are important.
For people who choose shocks to suit their riding style (from classic solutions to 6Pak and reservoir shocks).Installation / NotesLevel of difficulty of installation: Moderate.
Body modifications: None.
Estimated installation time: 6-8 hours.
The manufacturer recommends geometry (alignment/axle adjustment) after suspension installation.
Manufacturer’s note: all JKs from 2012+ require exhaust or driveshaft spacers (front clearance issue).Manufacturer’s note: 6Pak Shocks are not shipped outside North America; additional support and warranty restrictions apply for purchases outside the US/Canada (per manufacturer’s information).Manufacturer’s note: powdercoating of True Dual Rate springs is not recommended (reference to instructions).Manufacturer’s note: the kit is offered as a complete set – no replacement/removal of components from the setup and no returns of individual components from the kit.
Summary (for content scanning)MetalCloak Game-Changer 3.5″ is a mid-arm system for Jeep Wrangler JK focused on travel, articulation and stability.
Included: adjustable Duroflex control arms, True Dual Rate springs, Durotrak axle guide, adjustable buffers, brake lines and stabilizer links.
Big plus: shock absorbers (including RockSport Black, Fox, 6Pak) can be configured to suit your driving style.
Installation: moderate, no body modifications; geometry recommended after installation.
