JRZ Suspension - Porsche Cayman / Boxster (981 and 718, 2012 to present)

Six JRZ sets for the 981 and 718 Cayman and Boxster, from the RS Two to the active PROactive. Pick the set here. Spring rates and upgrades are chosen with you after you order.

WHAT'S THE BEST CHOICE FOR ME?

The right set depends on how you use the car.

RS Two - two knobs, twin tube, no canister. For the car that tracks more than it drives.
RS Pro - for the car that sees real street miles and real track time. Two adjustments, rebound and compression.
RS Pro 3 - the same use, with low speed compression added to tune balance and settle small bumps on the street.
11 Series - for racing in a class that allows two adjustments.
12 Series - a three-way on the Motorsport shaft.
PROactive - damping that adjusts itself as you drive.

Every set starts with a conversation. Call or text and we will help you choose.

FITMENT

Fits the Porsche 981 and 718 mid-engine cars, which share the same suspension fitment: Boxster and Boxster S 2012-2016, Cayman and Cayman S 2013-2016, and the 718 Boxster, Boxster S, Cayman and Cayman S from 2017 on. Every set comes with JRZ front and rear top mounts and springs. The GT4, GT4 RS and Spyder take their own set - call or text us for those.

A car with PASM needs a cancellation kit on any manually adjusted set. That is quoted with your options, not in the cart price.

JRZ RS TWO

$6,815

Shown: JRZ RS ONE set

The RS Two is a two-way RS Pro packaged into one damper body, no canister. Same blow-off valve design, same piston, a damping range that lands close to the RS Pro. Rebound adjusts on the shaft. Compression adjusts at a knob on the base of the damper that sets the blow-off preload, the same job the reservoir knob does on an RS Pro.

Everything in a JRZ starts with compression. Preload on the blow-off valve holds low speed control, then the valve opens and lets oil through when the wheel takes a hit. Low speed controls the chassis. Bumps upset the tire. Keeping the two apart is what makes the car settled and the ride liveable.

One honest note. It is a twin tube, so the gas and oil share a volume. On a long track session, 15 to 25 minutes in, gas works into the oil and the damping softens a touch. The fix is a click or two of adjustment to bring it back, which the two knobs let you do without opening anything. If you run long stints every weekend, that is the RS Pro's job - the reservoir keeps gas and oil apart. For the car that drives to the track, runs its sessions and drives home, the RS Two does the RS Pro's work at a lower price and with nothing to mount.

Two-way - rebound on the shaft, compression at the base of the damper
Blow-off compression valve and piston shared with the RS Pro
Twin tube, no canister to mount or plumb
Ride height adjustable
Rebuildable and revalvable

JRZ RS PRO

$9,525

RS PRO

The RS Pro is the original JRZ two-way. Rebound adjusts on the shaft and compression adjusts on a remote reservoir. It's built for the car that sees real street miles and real track time.

Everything in a JRZ starts with compression. The blow-off valve is a precision ground washer held shut by spring preload, and that preload is what the compression knob sets. It holds a lot of low speed control, then opens and lets oil flow freely when the wheel takes a hit. Low speed is what controls the chassis. Bumps are what upset the tire. Handled separately, the car stays settled while curbs and broken pavement pass underneath.

The reservoir keeps gas and oil apart and gives the compression valve room to work, so the damper stays consistent through a long session. The free flowing main piston is linear - the faster it moves, the more it resists - so rebound control is built in without harshness.

Two-way - rebound and compression, adjusted independently
21 rebound clicks, 14 compression clicks
Remote reservoir, adjustable gas pressure
Blow-off compression valve, linear main piston
Front and rear quick disconnects included
Ride height adjustable
Rebuildable and revalvable

JRZ RS PRO 3

$10,585

The RS Pro 3 is the original JRZ three-way: the RS Pro with a low speed compression adjustment added on the reservoir.

The low speed adjuster is a bleed around the blow-off valve. Letting some oil past before the valve opens changes the suspension speed where it opens. That is chassis control and balance, the core of tuning a car for handling.

It matters on the street too. A lot of road bumps aren't tall enough to open the compression valve. They energize the tire or soak up valve preload, and the car picks up a wavy feel. The bleed lets those small movements through and the ride settles down.

A third knob sounds like a lot. It isn't. Leave low speed in the middle, work with rebound and high speed first, and bring low speed in when you're ready.

Three-way - rebound, high speed compression, low speed compression
Same core as the RS Pro: remote reservoir, blow-off valve, linear main piston
Low speed bleed - balance at the track, a smoother small-bump ride on the street
Front and rear quick disconnects included
Ride height and gas pressure adjustable
Rebuildable and revalvable

JRZ 11 SERIES

$11,325

11 Series

The 11 Series is the JRZ Motorsport two-way. It has the same blow-off compression philosophy as the RS line, with a wider adjustment range and closer side to side matching.

The difference is the shaft. The Motorsport shaft is a two-piece assembly, which allows tighter fits between the adjusting parts and more accurate adjustment. A check valve makes the shaft adjustment rebound only, so compression on the piston side stays under control. Compression is set by one high speed blow-off adjuster on the reservoir.

This is the set for a car running a rulebook that allows two adjustments, where each one has to count. It also has somewhere to go. You can add 25mm shafts and the FA3030 piston. The 50 DA shaft adds isolated compression adjustment at the shaft and makes it a three-way.

Two-way - rebound on the shaft, high speed compression on the reservoir
Two-piece Motorsport shaft with rebound check valve
22mm shaft standard, 25mm available
Front and rear quick disconnects included
Upgrade path to the 50 DA
Valving built to order, rebuildable and revalvable

JRZ 12 SERIES

$13,745

12 Series

The 12 Series is the JRZ Motorsport three-way. It's the 11 Series with a low speed bypass added next to the high speed blow-off on the reservoir. Choose it when you want a predictable, easy to use three-way with the full Motorsport shaft underneath.

The bypass sets the speed where the blow-off opens, which covers chassis balance and weight transfer. The blow-off sets how much the damper holds before it lets go on a bump. Two knobs, two jobs, and they don't fight each other.

Upgrade paths match the 11. One honest note: a 50 DA shaft makes the 12 a four-way, and in most cases three compression adjustments is more than a car needs. If you're headed there, an 11 with a 50 DA is usually the better three-way. We'll tell you which fits.

Three-way - rebound on the shaft, high and low speed compression on the reservoir
Two-piece Motorsport shaft with rebound check valve
22mm shaft standard, 25mm available
Front and rear quick disconnects included
Valving built to order, rebuildable and revalvable

JRZ PROACTIVE STANDALONE

$15,040

PROactive is JRZ's active damper. A patented, electronically driven valve and a control unit with its own acceleration and gyro sensing adjust damping continuously as the road and the car change. You pick the character from an app or an in-cabin selector, and the system does the rest.

Standalone means the system runs on its own: dampers, control unit, wiring harness, Bluetooth module and app. It does not depend on factory electronic dampers. If your car has PASM, talk to us before ordering - we will tell you how PROactive fits your car.

Underneath it is still JRZ - the same philosophy that starts with compression and control of the unsprung mass, with the valve driven electronically instead of by spring preload.

Continuously adjusting, no knobs
Control unit with 1000Hz control frequency, 3-axis acceleration and gyro sensing
Modes from the app or a cabin selector
Front and rear quick disconnects included
Control unit mounting and wiring are part of the install - we walk your installer through it

WHAT IS INCLUDED

Four dampers, valved for your car
Springs, with rates chosen for how you use the car
JRZ front and rear top mounts
Front and rear quick disconnects on the RS Pro, RS Pro 3, 11 Series, 12 Series and PROactive
Baseline settings from 057

YOUR USE AND OPTIONS

The price on this page is the set as selected above. Spring rates and upgrades - 25mm shafts, the FA3030 piston, low-friction coating, the 50 DA shaft, the JRZ Pro Lift front axle lift - are chosen with you, not in the cart. The Pro Lift can be added to any manually adjusted set. After you order we'll call to confirm how you drive the car and which options make sense, and we quote any options before anything is ordered from JRZ.

Lead time is typically 3 to 6 weeks.

WHY BUY FROM 057

We have worked with JRZ for more than 15 years, from the engineering group to the production floor. Every set we sell starts with a conversation about your car and how you use it. It ships with baseline settings and spring rates for that use, not a generic sheet.

When the setup needs a change, we're here to make that adjustment with you. Call or text. Rebuilds, revalves and dyno work are done in-house in Frankfort, Illinois.