JRZ 11 Series double adjustable motorsport damper for the Porsche Cayman GT4 / GT4RS 718 (2017-2025). Purpose-built for competition with independent compression and rebound adjustment, blow-off valve technology for unsprung mass control, and the JRZ 8060 motorsport piston for linear damping. Built to order through Meisterschaft Motorsport Engineering, the official U.S. importer of JRZ Suspension. Every set includes expert setup consultation for your Porsche.
The JRZ 11 Series Coilovers Porsche Cayman GT4 GT4RS 718 deliver motorsport-grade double-adjustable damping with a remote reservoir mono-tube design. Built by JRZ Suspension Engineering in the Netherlands, the 11 Series gives GT4 and GT4 RS owners precise rebound control in a package that bolts directly into the 718 chassis. If you need more adjustability, see the 12 Series, RS TWO, or RS PRO.
The 11 Series is built for drivers who want one clear adjustment — rebound damping — without the complexity of multi-way tuning. A single knob controls how the damper extends after compression, letting you fine-tune body control and weight transfer for your driving style.
Every JRZ 11 Series kit for the Porsche 718 Cayman GT4 is hand-assembled at JRZ’s facility in the Netherlands. Damper bodies are machined from aerospace-grade aluminium, valving is set to Meisterschaft specifications, and each unit is dyno-verified before shipping. Front camber plates (JRZ p/n 99 001 991 4) and rear top mounts (JRZ p/n 99 001 981 4) are included and engineered specifically for the 718 GT4 chassis.
Designed as a direct bolt-in for the Porsche 718 Cayman GT4 and GT4 RS (2017–2025). The kit includes front and rear dampers with remote reservoirs, JRZ adjustable camber plates up front, JRZ rear top mounts, and your choice of spring package. Springs are available in Street, Street/Track Hybrid, Track, or Custom rates — chosen based on your driving style, tire compound, and whether the car sees daily use, track days, or dedicated competition. Every kit is a direct bolt-in with no fabrication required.
| DAMPER TYPE | Single-adjustable mono-tube with remote reservoir |
| ADJUSTMENTS | Rebound — adjustable from the damper body |
| DESIGN | Mono-tube with piggyback remote reservoir for increased oil volume |
| FITMENT | Porsche 718 Cayman GT4 / GT4 RS, 2017–2025 |
| VALVING | Meisterschaft spec — optimised for GT4 mass and chassis dynamics |
| SPRING PACKAGE | Street, Street/Track Hybrid, Track, or Custom rates |
| QUICK DISCONNECTS | Front standard |
| FRONT CAMBER PLATES | JRZ adjustable camber plates (p/n 99 001 991 4) |
| REAR TOP MOUNTS | JRZ rear top mounts (p/n 99 001 981 4) |
| INSTALLATION | Direct bolt-in — reservoir mounting required |
| SERVICE | Fully rebuildable and revalveable at Meisterschaft Motorsport |
| BUILD TIME | 2–4 weeks from order, depending on JRZ production schedule |
Tell us about your GT4 and how you use it — we’ll recommend the right JRZ platform, spring rates, and options.
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