Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood Gas Spring 36
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood Gas Spring 36" x 21" C 140#13mm #SL29-140-1 $27.30 $32.58
Attwood Marine SL29-140-1 Gas SpringsThis Attwood Special Order item is only offered in a full case quantity. Attwood no longer allows for less than case quantity orders.Ni-Slide Series Attwood gas springs are made with bio-degradable no hazzard to water grade oil (WGK), making them the marine industry's most environmentlly friendly gas springs. All springs pass ASTM B117, Attwood salt spray and a 30,000 cycle lifecycle test. Attwood gas springs come has many configurations to fit your needs including: marine, industrial, agricultural, pharmacuetical, food processing, and medical. Available in 6mm, 8mm and 10mm configurations between 10 and 100 pound output force.The Ni-Slide series carries Attwood's widest selection of configurations and lengths. These gas springs are the industry's proven leader in value, quality and durability.Gas Springs: OEM Gas SpringsOutput Force: 140 PoundsExtended: 36.30 InchesProduct Series: Ni-SlideCompressed: 21.10 InchesStroke: 15.20 InchesEnd Type: 10mm SocketShock Size: 10mm Rod x 22mm CylinderAlternate part number: SL-29-140-1, Spring LiftNormalized SKU: SL291401UPC Code: Search Key: ATT-SL29-Package Type: Bulk - Not packaged
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood Gas Spring 36
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood Gas Spring 36" x 21" C 120#13mm #SL29-120-1 $31.39 $37.46
Attwood Marine SL29-120-1 Gas SpringsThis Attwood Special Order item is only offered in a full case quantity. Attwood no longer allows for less than case quantity orders.Ni-Slide Series Attwood gas springs are made with bio-degradable no hazzard to water grade oil (WGK), making them the marine industry's most environmentlly friendly gas springs. All springs pass ASTM B117, Attwood salt spray and a 30,000 cycle lifecycle test. Attwood gas springs come has many configurations to fit your needs including: marine, industrial, agricultural, pharmacuetical, food processing, and medical. Available in 6mm, 8mm and 10mm configurations between 10 and 100 pound output force.The Ni-Slide series carries Attwood's widest selection of configurations and lengths. These gas springs are the industry's proven leader in value, quality and durability.Gas Springs: OEM Gas SpringsOutput Force: 120 PoundsExtended: 36.30 InchesProduct Series: Ni-SlideCompressed: 21.10 InchesStroke: 15.20 InchesEnd Type: 10mm SocketShock Size: 10mm Rod x 22mm CylinderAlternate part number: SL-29-120-1, Spring LiftNormalized SKU: SL291201UPC Code: Search Key: ATT-SL29-Package Type: Bulk - Not packaged
-17% sale
Taylor Made Qualifies for Free Shipping Taylor Made Gas Spring 20
00
DAYS 00
HRS 00
MIN 00
SEC
Taylor Made Taylor Made Gas Spring 20" x 40 lb #1843-40 $27.75 $33.12
Taylor Made 1843-40 Gas SpringsTaylor Made Gas Spring 20" x 40 lb #1843-40Normalized SKU: 184340UPC Code: 040011962058
Sold out -17% sale
Taylor Made Qualifies for Free Shipping Taylor Made Gas Spring 15
00
DAYS 00
HRS 00
MIN 00
SEC
Taylor Made Taylor Made Gas Spring 15" x 20 lb #1826 $27.98 $33.39
Taylor Made 1826 Gas SpringsTaylor Made Gas Spring 15" x 20 lb #1826Normalized SKU: 1826UPC Code: 040011144065
-17% sale
Taylor Made Qualifies for Free Shipping Taylor Made Gas Spring 26
00
DAYS 00
HRS 00
MIN 00
SEC
Taylor Made Taylor Made Gas Spring 26" x 80 lb 8mm #1878-80 $61.28 $73.53
Taylor Made 1878-80 Gas SpringsTaylor Made Gas Spring 26" x 80 lb 8mm #1878-80Normalized SKU: 187880UPC Code: 040011962706
-17% sale
Taylor Made Qualifies for Free Shipping Taylor Made Gas Spring 15
00
DAYS 00
HRS 00
MIN 00
SEC
Taylor Made Taylor Made Gas Spring 15" x 60 lb #1829 $27.98 $33.39
Taylor Made 1829 Gas SpringsTaylor Made Gas Spring 15" x 60 lb #1829Normalized SKU: 1829UPC Code: 040011144096
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-80-5 $45.90 $55.08
Attwood Marine ST36-80-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 80 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-80-5Normalized SKU: ST36805UPC Code: 022697368058Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-60-5 $45.90 $55.08
Attwood Marine ST36-60-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 60 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-60-5Normalized SKU: ST36605UPC Code: 022697366054Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" COMP 10.2" $45.90 $55.08
Attwood Marine ST36-40-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 40 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-40-5Normalized SKU: ST36405UPC Code: 022697364050Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-30-5 $45.90 $55.08
Attwood Marine ST36-30-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 30 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-30-5Normalized SKU: ST36305UPC Code: 022697363053Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-20-5 $45.90 $55.08
Attwood Marine ST36-20-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 20 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-20-5Normalized SKU: ST36205UPC Code: 022697362056Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-150-5 $44.76 $53.71
Attwood Marine ST36-150-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 150 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-150-5Normalized SKU: ST361505UPC Code: 022697361554Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-140-5 $44.76 $53.71
Attwood Marine ST36-140-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 140 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-140-5Normalized SKU: ST361405UPC Code: 022697361455Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-130-5 $44.76 $53.71
Attwood Marine ST36-130-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 130 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-130-5Normalized SKU: ST361305UPC Code: 022697361356Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-120-5 $44.76 $53.71
Attwood Marine ST36-120-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 120 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-120-5Normalized SKU: ST361205UPC Code: 022697361257Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-110-5 $44.76 $53.71
Attwood Marine ST36-110-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 110 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-110-5Normalized SKU: ST361105UPC Code: 022697361158Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 17.2
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 17.2" Comp 10.2" #ST36-100-5 $44.76 $53.71
Attwood Marine ST36-100-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 100 PoundsExtended: 17.20 InchesProduct Series: Stainless StandardCompressed: 10.20 InchesStroke: 7.00 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-36-100-5Normalized SKU: ST361005UPC Code: 022697361059Search Key: ATT-ST36-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 12
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 12" Comp 8.5" #ST35-90-5 $39.00 $46.80
Attwood Marine ST35-90-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 90 PoundsExtended: 12.04 InchesProduct Series: Stainless StandardCompressed: 8.46 InchesStroke: 3.58 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-35-90-5Normalized SKU: ST35905UPC Code: 022697359056Search Key: ATT-ST35-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 12
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 12" Comp 8.5" #ST35-80-5 $39.00 $46.80
Attwood Marine ST35-80-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 80 PoundsExtended: 12.04 InchesProduct Series: Stainless StandardCompressed: 8.46 InchesStroke: 3.58 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-35-80-5Normalized SKU: ST35805UPC Code: 022697358059Search Key: ATT-ST35-Package Type: Aftermarket Packaging
Sold out -17% sale
Attwood Marine Qualifies for Free Shipping Attwood SS Gas Spring 8mm Ext 12
00
DAYS 00
HRS 00
MIN 00
SEC
Attwood Marine Attwood SS Gas Spring 8mm Ext 12" Comp 8.5" #ST35-70-5 $39.00 $46.80
Attwood Marine ST35-70-5 Gas SpringsAttwood INOX Stainless Standard Series. Stainless Steel shell and rod ensure corrosion-resistance and up to 30% lower cost than traditional Stainless springs. All Stainless Standard Series springs come with high-strength, corrosion-proof composite end fittings.Gas Springs: Aftermarket Gas SpringsOutput Force: 70 PoundsExtended: 12.04 InchesProduct Series: Stainless StandardCompressed: 8.46 InchesStroke: 3.58 InchesEnd Type: 10mm SocketShock Size: 8mm Rod x 18mm CylinderAlternate part number: ST-35-70-5Normalized SKU: ST35705UPC Code: 022697357052Search Key: ATT-ST35-Package Type: Aftermarket Packaging

Frequently Asked Questions

First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!

Yes, we offer FREE Shipping on most orders over $149 to US-48*.

Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.

  • Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
  • Oversized - Not Qualified for Free Shipping: This item is too large/heavy to qualify for free shipping
  • Hazardous Item - Not Qualified for Free Shipping: This item is hazardous and does not qualify for free shipping
  • Truck Freight - Not Qualified for Free Shipping: This item has to be shipped via truck freight. Please contact us for a quote
  • In-Store Pickup Only: This item can only be picked up in our Grain Valley, MO retail store

Below the price of the item, on the product page, there is a message indicating the availability of the product.

The quantity on hand is updated as inventory events happen and matches what we have available. If you have urgent needs and we are close to what you need, contact us, and we can confirm stock.

We offer a hassle-free return policy. If you're not completely satisfied with your purchase, you can return it within 30 days for a full refund or exchange.

If you need to return an item, please follow the guidelines here so we can process a prompt refund and assist you in finding the correct item.

Free Shipping

On most orders $149+ to the continental 48 US states.

Secure Shopping

Fast, secure checkout with a variety of payment methods.

Shop with confidence

25+ years serving the marine industry.

Support center

Need help? Contact us via live chat, phone, or email.

© 2026 First Choice Marine.