- Description
- Fitment
- Refund Policy
The Öhlins TTX Pro Coilover System for the Porsche Cayman GT4 CS (981) is a motorsport-grade suspension package developed specifically for the Cayman platform's track-focused architecture. Built around Öhlins' TTX — Twin Tube eXtreme — technology, the kit brings the same damping principles Öhlins applies in Formula 1, IndyCar, and MotoGP to a bolt-on system that transforms the GT4 CS into a precisely tunable circuit tool.
TTX technology uses a twin-tube damper architecture where an inner working tube and outer reserve tube manage fluid flow across a wide range of shaft speeds with high precision. Independent compression and rebound adjusters allow separate control of each damping phase — a significant advantage for a car with the GT4 CS's suspension geometry and spring rates. The system is upgradeable to three or four-way adjustability for advanced setup requirements.
Öhlins' temperature-compensating design keeps damping output consistent as fluid temperatures rise through extended track use. The Cayman GT4 CS is already a capable circuit car in standard form; the TTX Pro system allows a driver or engineer to unlock its full potential through precise chassis tuning.
The kit targets a ride height reduction of approximately 20mm below OE. Ride height adjustment is independent of spring preload, enabling clean geometry and corner-weight adjustments without altering spring behavior.
Product Details
- SKU: POF MR10S2
- Öhlins TTX (Twin Tube eXtreme) technology
- 2-way independent adjustment: separate compression and rebound knobs
- Upgradeable to 3-way or 4-way adjustability
- Target ride height reduction: approximately 20mm below OE
- Spring rates: 120 N/mm (686 lb/in) front, 140 N/mm (915 lb/in) rear
- Separate ride height adjustment independent of spring preload
- Twin-tube damper construction
- Rebuildable and serviceable dampers
- Designed for serious track and race use
Front Suspension Features
- TTX twin-tube damper with independent compression and rebound adjustment
- 120 N/mm (686 lb/in) spring rate
- Spring preload adjustment
- Ride height adjustment via threaded lower mount
Rear Suspension Features
- TTX twin-tube damper with independent compression and rebound adjustment
- 140 N/mm (915 lb/in) spring rate
- Spring preload adjustment
- Independent ride height adjustment
Vehicle Applications
- Porsche Cayman GT4 CS (981)
Technical Resources
Notes
- Suspension components are non-returnable once installed
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
