MATRIZ · UNIVERSAL ROCKER · STEEL + PA12 CF · AUSTIN, TX

18 motion ratios. One part.

Dual-tandem damper pushrod suspension needs a bell-crank rocker tuned to the build — and every build wants a different ratio. MATRIZ indexes three hole positions on both arms and flips, giving you 18 configurations without cutting a new part for each one.

See specs →
MATRIZ rocker mockup — red PA12 CF MATRIZ universal rocker — build photo 1 MATRIZ universal rocker — build photo 2 MATRIZ universal rocker — build photo 3 MATRIZ universal rocker — build photo 4 F150 post-runner traction bar weld

Bell-Crank Rocker · Dual-Tandem Pushrod · Steel + PA12 CF

MATRIZ

The MATRIZ Rocker is a bell-crank rocker arm built for dual-tandem damper pushrod suspension systems. Its defining feature is configurability: three indexed hole positions (5", 7", 9") on both the input and output arms, combined with a flippable orientation, yield 18 distinct motion-ratio configurations from a single part — the "universal" in its name.

Two 1/4" A36 mild steel outer plates, laser-cut, sandwiching a 3D-printed PA12 carbon fiber center spacer. Input and output bores are 0.5". The rocker spins on a greased bronze bearing, 1" OD × 0.75" ID, for 3/4" bolts. Lubricated with paraffin wax + ATF — water-resistant, avoids the limitations of soap-based lubricant.

  • 18 motion-ratio configurations — 3 hole positions × input/output arms, flippable
  • Two 1/4" A36 mild steel outer plates, laser-cut
  • 3D-printed PA12 CF center spacer
  • Input/output bores: 0.5"
  • Greased bronze bearing — 1" OD × 0.75" ID, for 3/4" bolts
  • Self-etching primer + Rust-Oleum High Performance Enamel, 6 coats minimum
  • Part numbering: LABS-MATRIZ-XXX-R1 · QMS-documented build

Est. $500–700 — bolt-on kit in development

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Bolt-on kit in development · QUESTIONS → [email protected]

Why It's Different

One part, eighteen suspensions

Most bell-crank rockers are cut once for one ratio. MATRIZ is built to be re-tuned without cutting a new part.

Three indexed hole positions per arm Moves the pivot point on input and output arms independently Re-tune motion ratio without machining a new rocker
Flippable orientation Doubles the configuration count from the same hole layout 18 total ratios from one part instead of 18 different parts
Steel-sandwich plate construction Two laser-cut A36 plates around a printed PA12 CF center spacer Fixed the double-shear cracking that killed the first-gen all-PA12 design
Paraffin wax + ATF lubrication Water-resistant bushing lubrication that doesn't rely on soap-based grease Holds up in dirt, gravel, and mud where soap-based lube washes out
How It Got Here

Concept to on-road in four months.

MATRIZ is proven on a 2005 Ford F150 dual-tandem damper pushrod rear suspension build ("Post-Runner") — concept to on-road in four months on a $500 total BOM, validated over 50+ miles across dirt, gravel, and mud. The first-generation all-PA12 CF bell crank cracked at the double shear tabs due to undersized fillet radii and an abrupt section transition. That failure drove the current steel-sandwich-plate design, which resolved the issue.

Designed and tested in Texas by people who actually work on performance vehicles — not a marketing department.

Read the full build log →

On The Truck

See it running

ORDERS & QUESTIONS

[email protected]

Bolt-on kit in development. Email to reserve or ask fitment questions.