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JRZ 12 Series Coilovers - BMW 1 series non M E81/E87/E88 (2005-2013) - Meisterschaft Motorsport
JRZ 12 Series Coilovers - BMW 1 series non M E81/E87/E88 (2005-2013) - product detail 1

Porsche

911 GT3

|

991

2012 -

2019

12 series

|

$10,325.00

SKU: MME-JRZ-00270

In Stock

Full Spring Package*

Add on 25mm Shaft upgrade*

Add on FA3030 Upgrade*

Add on Shaft Low Friction Coating*

Quick Disconnects Rear

Add on Rear Quick Disconnects*

Allows for easier routing of canister into the chassis.

Add JRZ PROlift Nose-Lift Kit*

Total: $10,325.00

Built to Order

2-4 week lead time

JRZ Factory

Hand built in the Netherlands

Rebuildable

Full service & revalve support

Setup Help

We help you dial it in

JRZ 12 Series triple adjustable motorsport damper for the Porsche 911 GT3 991 (2012-2019). Adds low speed compression bypass to independently adjustable compression and rebound, enabling precise tuning of pitch, roll, and vehicle balance. Features the JRZ 8060 motorsport piston and upgradeable to quad-adjustable with the 50 DA option. Built to order through Meisterschaft Motorsport Engineering, the official U.S. importer of JRZ Suspension. Every set includes expert setup consultation for your Porsche.

WHY THE 12 SERIES FOR THE PORSCHE 911 GT3 991

JRZ 12 Series Coilovers Porsche 911 GT3 991 — triple-adjustable motorsport damping built to order in the Netherlands by JRZ Suspension Engineering. Every unit is hand-assembled and dyno-validated before shipping. Browse all JRZ coilovers.

The JRZ 12 Series Coilovers deliver motorsport-grade triple-adjustable damping to the Porsche 911 GT3 991 (2012–2019). Designed and hand-assembled in the Netherlands by JRZ Suspension Engineering, the 12 Series provides independent high-speed compression, low-speed compression, and rebound control — giving drivers precise authority over weight transfer, body control, and mechanical grip. Whether you are chasing lap times or building a refined street setup, the 12 Series adapts to your driving style and surface conditions with unmatched resolution. Explore the full 911 GT3 991 coilover lineup: 11 Series · RS PRO · RS PRO3 · RS ONE.

Why the JRZ 12 Series for Your 911 GT3?

  • Triple-adjustable damping — independent high-speed compression, low-speed compression, and rebound let you fine-tune ride quality and cornering balance with surgical precision.
  • Monotube construction — consistent fade-free performance under sustained hard driving, from spirited back roads to endurance track sessions in the 991 GT3’s naturally aspirated flat-six.
  • Height-adjustable spring perches — set your ride height without compromising suspension travel, maintaining the geometry Porsche’s engineers designed around.
  • Revalveable and rebuildable — JRZ’s open-service design means your dampers evolve with your setup; swap valve shims to match new tires, aero, or alignment changes.
Not sure which series?
The 12 Series is JRZ’s flagship — a motorsport-grade triple-adjustable damper at the top of the entire range. The 11 Series offers motorsport-grade double adjustment at a lower price point. For street/track use, the RS PRO3 provides triple adjustment from the RS line.

Hand-Built in the Netherlands

Every JRZ 12 Series damper is assembled by a single technician in Breda, Netherlands. Each unit is dyno-tested against its target force curve and serialized before it leaves the facility. This is not mass production — it is precision manufacturing backed by decades of motorsport R&D at the highest levels of professional racing.

JRZ 12 Series Coilovers — Fitment: Porsche 911 GT3 991 (2012–2019)

This kit is engineered specifically for the Porsche 911 GT3 on the 991 platform, covering both the 991.1 (3.8L) and 991.2 (4.0L) naturally aspirated flat-six variants. The 12 Series bolts into the factory mounting points with no permanent chassis modifications, and ride height is set through threaded spring perches — preserving full suspension travel at any stance.

Spec Sheet

SPECIFICATION DETAIL
VEHICLE Porsche 911 GT3 991 (2012–2019)
DAMPER TYPE Triple-adjustable (high-speed compression, low-speed compression, rebound)
CONSTRUCTION Monotube, piggyback reservoir
SPRING TYPE Coilover (divorced spring option available)
RIDE HEIGHT Adjustable via threaded spring perches
REBOUND ADJUSTMENT External knob — 4-click sectors
COMPRESSION ADJUSTMENT Dual external — high-speed and low-speed independent
QUICK DISCONNECTS Non-inverted / standard
BODY MATERIAL Hard-anodized 6000-series aluminum
SHAFT Chrome-plated, induction-hardened steel
SEALS Low-friction fluoropolymer composite
DUST BOOT Included — protective bellows
SERVICE Fully revalveable and rebuildable
WARRANTY Contact Meisterschaft Motorsport for details

Frequently Asked Questions

What makes triple-adjustable damping better than twin-adjustable?
Triple-adjustable dampers separate high-speed and low-speed compression into independent circuits. This means you can tune how the car reacts to sharp impacts (curbs, bumps) without affecting how it responds to slower weight transfers (braking, cornering). The result is a wider tuning window and less compromise between ride comfort and outright grip.
Can I run these on the street?
Yes. The 12 Series is fully street-friendly when set to softer damping positions. Many GT3 owners daily-drive on JRZ coilovers and simply firm up the adjusters for track days — no spring changes required.
Do I need to modify my chassis to install these?
No. The 12 Series bolts directly into the Porsche 911 GT3 991 factory mounting points. No cutting, drilling, or welding is required.
How often should I service JRZ dampers?
JRZ recommends a service interval based on usage — typically every 20,000–30,000 road kilometers or every 30–50 track hours. Service includes fresh oil, new seals, and a dyno re-test to confirm performance.
Does this fit both 991.1 and 991.2 GT3?
Yes. This kit covers the full 991 GT3 production run from 2012 through 2019, including both the 991.1 (3.8L) and 991.2 (4.0L) variants.

Need Help Choosing?

Not sure whether the 12 Series is the right match for your 911 GT3 build? Our team can walk you through damper selection, spring rates, and setup recommendations based on your driving goals.

Contact Us
Compare RS PRO3

JRZ 12 Series Coilovers - Porsche 911 GT3 991 (2012-2019)

☎ (954) 408-2280

Contact us for pricing

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$10,325.00