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- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Sypder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
SET OF 4 (two backrests and two seat bases)
If your car is equipped with the 918 fixed carbon bucket seats, changing the appearance has never been easier.
This set comes complete with new backrest and seat base foams (as factory original) covered in your desired material and fitting is straightforward.
The foam used in these are the same density as the factory items. If you find these to hard, please see our range of softer foams.
Transform your Porsche’s interior with our premium Weissach / RS-style seat cushions, upholstered in rich Alcantara for an ultra-luxurious, sporty feel. Designed to complement carbon bucket seats or OEM RS trims, these cushions enhance comfort while maintaining the high-performance aesthetic. These cushions are engineered to slip over your existing seat base or integrate with RS/Weissach carbon or lightweight seats. Their tailored design fits snugly, adding grip and reducing slippage under spirited driving
• Premium Material: Covered in high-quality Alcantara for a soft, grippy, and durable surface
• Weissach / RS Styling: Authentic styling cues to match factory “RS / Weissach” interiors
• Comfort & Support: Adds padding and ergonomic support for longer drives
• Tailored Fit: Contoured for specific seat shapes to keep a flush, factory look
Please Note
When fitting sets to 2021 seats and onward make sure you disconnect the battery while working on the seats in order not to get any warning lights appearing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
918FOAMALC
The product you are viewing cross references to these numbers
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.1 (911) Dakar 3.0L 2023-24
SilverRocket LWB Seat Angle Adjuster – Ergonomic
Precision and Track-Ready Comfort for Porsche Models with LWB Seats
Sold per seat
The SilverRocket LWB Seat Angle Adjuster is a premium
upgrade designed to improve comfort, ergonomics, and driver performance in
Porsche 992.1 models equipped with lightweight bucket (LWB) seats.
Developed with motorsport engineering precision, this adjuster subtly
increases the seat’s rearward tilt to eliminate the overly upright posture
common in standard setups — a position that can cause neck strain and fatigue,
especially when wearing a helmet during extended drives or track sessions.
Fits:
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2S 3.0L 2019-24
- Porsche 992.1 Carrera 4S 3.0L 2019-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.1 (911) Dakar 3.0L 2023-24
Will not fit 992.2
By refining the seat’s incline, the SilverRocket Adjuster enhances both driving comfort and control, allowing for a more natural seating position that optimises visibility, headroom, and steering alignment.
What Does the SilverRocket LWB Seat Angle Adjuster Do?
The adjuster redefines how you sit behind the wheel. It fine-tunes the angle of the LWB bucket seat, transforming it from a static racing position into a performance-ergonomic configuration that’s equally suited to spirited driving and long-distance touring.
Core Functions:
- Enhances
backward tilt for a more relaxed, natural seating posture.
- Increases
helmet clearance, improving comfort during track driving.
- Reduces
neck and back strain by correcting overly upright seat geometry.
- Improves overall ergonomics and body alignment for better driver endurance.
When paired with the SilverRocket 3D Bucket Seat Insert, the seat achieves a comfort level comparable to Porsche’s premium comfort seats — without sacrificing track-day performance.
Why Do Standard Seat Mounts Cause Issues?
While Porsche’s LWB seats deliver exceptional lateral
support, their fixed angle can create ergonomic challenges during long
drives or helmeted track use. Common issues include:
- Excessively
upright posture, causing discomfort over time.
- Limited
helmet clearance, forcing the head forward under load.
- Increased
fatigue, reducing driver focus and control.
- Inflexible seat geometry, offering no adjustability for different driver builds.
The SilverRocket LWB Seat Angle Adjuster solves these problems through precision-machined titanium engineering that allows for a more adaptive, performance-oriented seating position.
Why Upgrade to SilverRocket’s TC-4 Titanium Seat Adjuster?
Unlike conventional aluminum spacers or steel brackets, the SilverRocket Seat Adjuster is crafted from aerospace-grade TC-4 titanium — 10x stronger than aluminum — to ensure unmatched structural integrity and safety under track conditions.
Key Benefits:
Enhanced
seating posture for both high-performance and comfort driving.
Track-ready
strength, exceeding manufacturer specifications for load and stress
resistance.
Proprietary
Anti-Scratch Stopper, eliminating the risk of seat rail damage.
Minimally
invasive design, preserving the original seat slider mechanism and
full adjustability.
Sleek
electroplated black nickel finish, complementing Porsche’s interior
styling.
Weight-efficient
construction, maintaining optimal balance and safety compliance.
This combination of comfort, safety, and craftsmanship makes the SilverRocket Seat Adjuster the most advanced ergonomic upgrade available for Porsche 992.1 models with LWB seats
Highlights:
- Improved
rear seat tilt for a natural, ergonomic posture.
- Enhanced
comfort comparable to Porsche’s comfort seats when paired with SR 3D
inserts.
- Aerospace-grade
TC-4 titanium construction, 10x stronger than aluminum.
- Proprietary
Anti-Scratch Stopper, preventing seat rail damage.
- Maintains
full slider functionality, with a minimally invasive installation.
- Electroplated
black nickel finish for a premium aesthetic.
- Optimised for helmet use, reducing strain during track sessions.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9GT881105BY
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Sypder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.1 (911) Dakar 3.0L 2023-24
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche 918 Spyder 4.6L 2014-15
Sold each - One per seat
Fits:
Porsche 718 Boxster / Cayman - 2017 Onwards
Porsche 991 - 2019 to 2019
Porsche 992 - 2019 Onwards
Porsche 918 Spyder- 2014 to 2016
The incredible Lightweight Bucket Seats from Porsche adorn many vehicles from the 918 to the GT3, GT2, GT4, T and many other models if so equipped.
We created this adjustable lumbar support for our vehicles out of necessity. Not only for the driver but the passenger who agreed to that 6 hour journey as our co-pilot. Typically these are quite comfortable seats but on longer journeys, a little lumbar support goes a long way to comfort the back of you and your co-pilot.
These install in a minute for each side, adjustable for height (lower back, small of back, etc)
The air bladder is adjustable via a simple and lightweight ball pump and once the desired support is obtained, the ball pump can be removed and the hose and check valve tucked into the seat for an invisible install. Or just keep the ball for adjustment at anytime.
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche 992.1 (911) Dakar 3.0L 2023-24
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Sold each - Fits left or right hand seat
Fits:
Porsche 981 Cayman GT4
Porsche 718 Cayman GT4 / GT4 RS
Porsche 991.1 / 991.2 GT3 / GT3 RS
Porsche 992 GT3 / GT3 RS / GT2 RS
The Best Way to Install Sub Straps in your Porsche
The Performance Sub Strap Mount is a must-have for Porsche GT2RS, GT3/GT3RS, and GT4 owners using five, six, or seven-point harnesses with the factory CFRP Full Bucket Seats (also called Light Weight Bucket seats). Designed to easily bolt in using existing seat hardware without having to fully remove the seats from the car, the Performance Sub Strap Mount properly anchors your harness anti-submarine straps ("sub straps") to your seat base.
The CMS Performance Sub Strap Mount fits the driver- and/or passenger-side seats.
Performance install harness sub straps in your Porsche are Made in the USA.
Performance Sub Strap Mounts are designed, manufactured, and powder-coated entirely in-house in the USA. Made of solid carbon steel while only weighing 1.4 lbs (625g), there's not a stronger, more affordable solution available. Sub Strap Mounts allow full seat adjustment, fore/aft and up/down, while maintaining the ideal sub strap angle to your body for maximum safety.
Performance Sub Strap Mount Details: