Catalogue
Nitrider gas spring with zinc plated ball sockets – 500 N – 081651
In stock
The 081651 is a Nitrider® gas spring engineered for medium-to-large hatches and structural panels aboard sailing and motor yachts.
Originally specified by Beneteau (BJ Technologie) for their production vessels, this long-stroke gas strut is fitted at both ends with EF-BS006Z zinc-plated steel ball sockets and delivers a push force of 500 N over a stroke of 400 mm, providing reliable, consistent support across a wide range of onboard mechanisms.
With a centre-to-centre length of 909 mm including end fittings, this marine gas strut is a precision OEM spare part for vessels originally equipped with this reference.
Sliding and Swivel Boat Seat Suspension 350 mm (14″) – 4S Scandinavian-THW
In stock
The THW is a marine seat suspension from the TH series by 4S Scandinavian Seat Suspension Systems, combining a fore/aft sliding system (Slide) and a 360° lockable swivel (Swivel), with a seating height of 350 mm (14").
Equipped with a quick weight adjustment handwheel — the key differentiator of the TH series — this shock-absorbing helm seat suspension allows instant pre-load setting without tools, perfectly adapted to fast on-the-water adjustments aboard powerboats, RIBs and centre-console vessels.
Certified to ABYC H-31 type AO (any boat, any position, any speed) and built from premium marine-grade materials throughout, the THW is a precision-engineered solution for helmsmen, yacht builders and professional refit yards who demand both performance and ease of use at the helm.
Sliding and Swivel Boat Seat Suspension 380 mm (15″) – 4S Scandinavian-CCW
In stock
The CCW is a marine seat suspension from the CC series by 4S Scandinavian Seat Suspension Systems, combining a fore/aft sliding system (Slide) and a 360° lockable swivel (Swivel), with an adjustable seating height of 340 to 380 mm (14 to 16").
Built from premium marine-grade materials — 316L stainless steel, 5052H32 and 6061T6 aluminium, bronze c63000 — this shock-absorbing boat seat suspension effectively dampens wave impact forces, protecting the pilot's spine and neck during rough water navigation.
Certified to ABYC H-31 type AO (any boat, any position, any speed), the CCW is a seriously engineered solution for powerboat owners, yacht builders and demanding marine refit professionals.
Sliding gasket 7-0 x 6.9 mm – NOVAL companionway – CNB76 CNB66- AT3916
In stock
- Ensures optimum watertightness
- Reduces friction when opening/closing
- Resistant to UV, salt water and atmospheric agents
- Supply per linear metre
Sliding gasket 7×5.5mm – NOVAL companionway – CNB76 CNB66 – AT1113
In stock
- Ensures optimum watertightness
- Reduces friction when opening/closing
- Resistant to UV, salt water and atmospheric agents
- Supply per linear metre
Stainless steel 316L gas spring – no end fittings – 400 N – 100102
In stock
The 100102 is a 316L stainless steel gas spring originally developed for Dufour Yachts production vessels.
This compact gas strut delivers a push force of 400 N over a stroke of 170 mm and is supplied without end fittings, offering maximum flexibility for custom mounting configurations aboard yachts and nautical craft.
With a body length of 394 mm and fully threaded M6 x 1.0 rod ends, this marine gas spring is a precision OEM spare part for boats originally equipped with this reference, or a versatile choice for bespoke installations requiring a specific force and stroke combination.
Stainless steel 316L gas spring with plastic ball sockets – 100 N – 081479
In stock
The 081479 is a 316L stainless steel gas spring developed for the protected interior spaces of sailing and motor yachts.
Originally specified by Beneteau (BJ Technologie) for their production vessels, this compact gas strut is fitted at both ends with EF-BS004P plastic ball sockets and delivers a push force of 100 N over a stroke of 180 mm, making it the right onboard solution for lightweight locker lids, cabinet doors, and interior access panels.
With a centre-to-centre length of 445 mm including end fittings, this marine gas spring is a precision OEM spare part for vessels originally equipped with this reference.
Stainless steel locking gas strut assembly – 250 N – 100147
In stock
The 100147 is a stainless steel locking gas strut assembly combining a gas spring with an integrated LTX stainless locking tube, originally developed for Dufour Yachts production vessels.
This unique two-component assembly delivers a push force of 250 N over a stroke of 200 mm and automatically locks in the fully open position, eliminating the need for a separate prop rod or safety stay — a critical safety feature for engine bay hatches, large locker lids, and any onboard panel where an unintentional closure could cause injury or damage.
Manufactured entirely in stainless steel with an overall assembled length of 450 mm, this is a precision OEM spare for nautical vessels originally fitted with this reference.
Traction gas strut with stainless steel ball sockets – 250 N – 155176
In stock
The 155176 is a traction gas strut designed for demanding marine applications aboard yachts and nautical vessels.
This traction gas spring works in tension rather than compression, making it a specialist solution for mechanisms that require a pulling force. It is fitted at both ends with 316 stainless steel ball sockets (EF-BS009X), ensuring excellent resistance to saltwater and corrosion in the harshest sea conditions.
With a force of 250 N and a stroke of 250 mm, this gas strut provides reliable, consistent performance for hatches, panels, and moving structures on board.
Vertical boat TV lift with manual rotation – NL3358
In stock
Vertical boat TV lift with manual rotation – NL3361
In stock
Wall-mounted electric boat TV lift – 12V – NL1260
In stock
This motorized TV lift allows a flat screen to rise smoothly from a cabinet or disappear discreetly behind a bulkhead, optimizing space while maintaining perfect stability during navigation.
Engineered for 12V DC onboard power systems, the NL1260 is ideal for sailboats, motor yachts, and refit projects where silent operation, robustness, and compact dimensions are essential.
Wall-mounted electric boat TV lift – 12V – NL1261
In stock
This motorized TV lift allows a flat screen to rise smoothly from a cabinet or disappear discreetly behind a bulkhead, optimizing space while maintaining perfect stability during navigation.
Engineered for 12V DC onboard power systems, the NL1261 is ideal for sailboats, motor yachts, and refit projects where silent operation, robustness, and compact dimensions are essential.
Wall-mounted electric boat TV lift – 24V – NL1261
In stock
Wall-mounted electric TV lift – 12V – NL1177
In stock
The NL1177-12V is a compact wall-mounted electric TV lift engineered for seamless integration into yacht interiors and marine furniture.
Designed to discreetly raise and lower a flat screen, this motorized TV elevator optimizes onboard living space while ensuring smooth, silent operation, perfectly suited to the constraints of navigation.
Ideal for cabins, saloons and wheelhouses, this 12V TV lift guarantees reliable performance in demanding nautical environments.
Wall-mounted electric TV lift – 24V – NL1177
In stock
The NL1177-24V is a compact wall-mounted electric TV lift engineered for seamless integration into yacht interiors and marine furniture.
Designed to discreetly raise and lower a flat screen, this motorized TV elevator optimizes onboard living space while ensuring smooth, silent operation, perfectly suited to the constraints of navigation.
Ideal for cabins, saloons and wheelhouses, this 24V TV lift guarantees reliable performance in demanding nautical environments.
Wall-mounted electric TV lift – 24V – NL1260
In stock
Slim vertical TV lift – stroke 615mm – outdoor – NL1261-TMR-12V-EXT
In stock
3-stage electric table lift in mirror-polished stainless steel 12V DC – NL2079
In stock
Kit: suspension + jockey seat + storage box – RIB04S
In stock
- Easy assembly
- Jockey seat included
- Quick preload adjustment (5 seconds)
- Suitable for semi-rigid boats and open hulls
- 6061T6 aluminum frame with marine powder coating
- Responsive foam padding
- High-quality marine vinyl cladding
- Optional front grab bar (ref. GR4)
- Compliant with ABYC H-31 standards for type AO
To make the most of your outings at sea and avoid back or knee painw, it's essential to choose a quality boat seat suspension specially designed for pleasure boating and leisure. Find out more about on-board comfort and safety here.
Join the hundreds of users of 4S - Scandinavian Seat Suspension Systems!

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Gas Springs