00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King Pin Offset Post 3/4" x 13" Tall #3630402-S
$31.56
$37.67
Springfield 3630402-S Seat Posts
The Springfield 3630402-S is a 13" tall King Pin offset post that adds 5" of horizontal extension to move your seat away from the base mounting point. That offset is useful when you need to position a seat over a gunwale, around a console, or anywhere the base can't be placed directly under where you want to sit.
The post is built from 1-3/4" diameter stainless steel for corrosion resistance and long-term durability in a marine environment. The locking pin is mild steel with an e-coat finish, which provides solid corrosion protection without adding unnecessary bulk. At 13" tall with a full 5" of offset, this post gives you meaningful positioning flexibility that a straight post simply can't offer.
Compatible with any King Pin seat mount or any standard King Pin base, both sold separately. This is the post only.
Post height: 13"
Post diameter: 1-3/4" stainless steel
Offset extension: 5"
Pin material: Mild steel with e-coat finish
Compatible with any King Pin seat mount (sold separately)
Compatible with any standard King Pin base (sold separately)
Part Number: 3630402-S
Normalized SKU: 3630402S
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King Pin Post 3/4" x 15" Tall #3610415-S
$36.12
$43.11
Springfield 3610415-S Seat Posts
The Springfield 3610415-S is a 15" tall King Pin seat post with a 1-3/4" diameter build and an included reinforcement ring. It's a straightforward, well-built post for standard helm and fishing seat setups where you need a reliable 15" of height and a solid connection to your King Pin base.
The 1-3/4" diameter gives the post the rigidity to handle regular use without flex or wobble, and the reinforcement ring adds extra strength at the base of the post where it threads into the mount. Compatible with any King Pin seat mount or any standard King Pin base, both sold separately.
This is the post only. A compatible King Pin seat mount or standard King Pin base is required and sold separately.
Post height: 15"
Post diameter: 1-3/4"
Includes reinforcement ring
Compatible with any King Pin seat mount (sold separately)
Compatible with any standard King Pin base (sold separately)
Part Number: 3610415-S
Normalized SKU: 3610415S
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King Pin Post 3/4" x 13" Tall #3610413-S
$28.95
$34.56
Springfield 3610413-S Seat Posts
The Springfield 3610413-S is a 13" tall King Pin seat post with a 1-3/4" diameter build, anodized finish, and an included reinforcement ring. The anodized finish gives the aluminum post solid corrosion resistance without adding bulk, and it holds up well in the sun and spray that come with regular time on the water.
At 13" of post height, this sits between the 11" and 15" options in the King Pin lineup, making it a good middle-ground choice for fishing seat setups where you want a bit more elevation than the shorter post but don't need the full height of the 15". The reinforcement ring adds rigidity at the base of the post where it meets the mount, keeping things solid under load.
This post carries an ABYC Class B H-31 rating for fishing use only. Compatible with any standard King Pin base and any King Pin seat mount, both sold separately. This is the post only.
Post height: 13"
Post diameter: 1-3/4"
Finish: Anodized aluminum
Includes reinforcement ring
ABYC Class B H-31 rating, fishing use only
Compatible with any standard King Pin base (sold separately)
Compatible with any King Pin seat mount (sold separately)
Part Number: 3610413-S
Normalized SKU: 3610413S
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King Pin Post 3/4" x 11" Tall #3610411-S
$25.05
$29.90
Springfield 3610411-S Seat Posts
The Springfield 3610411-S is an 11" tall King Pin seat post with a 1-3/4" diameter build, anodized finish, and an included reinforcement ring. If you're running a lower seat height or working with a setup where the 13" or 15" post puts things too high, the 11" version brings the seat down to a more comfortable level without giving up any of the structural integrity the King Pin system is built around.
The anodized finish protects the aluminum post from corrosion and UV exposure, keeping it looking clean and performing well over time. The reinforcement ring adds rigidity right at the base of the post where it threads into the mount, which is exactly where you want extra support when someone's shifting their weight around on a moving boat.
This post carries an ABYC Class B H-31 rating for fishing use only. Compatible with any standard King Pin base and any King Pin seat mount, both sold separately. This is the post only.
Post height: 11"
Post diameter: 1-3/4"
Finish: Anodized aluminum
Includes reinforcement ring
ABYC Class B H-31 rating, fishing use only
Compatible with any standard King Pin base (sold separately)
Compatible with any King Pin seat mount (sold separately)
Part Number: 3610411-S
Normalized SKU: 3610411S
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Plug-In Power Rise Post with 238 Mount 12-17" #3300601-AP
$264.26
$335.63
Springfield 3300601-AP Seat Posts
The Springfield 3300601-AP is a Plug-In power-rise post and mount package built for boats where you want a seat that can move between a cockpit position while underway and a fishing position when you're on the water. The gas-assisted power-rise mechanism adjusts from 12" to 17" of post height, giving you 5" of range to dial in your seating position without tools.
The post is made from high-strength aluminum with a 2-3/8" diameter and is compatible with any Plug-In base on the boat, so you can pull the post and drop it into a different base location as your needs change. The package includes a Trac-Lock non-locking swivel seat mount (part 550045 / 1100031-1), which allows the seat to rotate freely rather than locking into fixed positions.
This package carries an ABYC Class AP H-31 Passenger rating, making it suitable for passenger seating applications. A compatible Plug-In base is required and sold separately.
Height adjustment range: 12" to 17"
Post diameter: 2-3/8" aluminum
Gas-assisted power-rise mechanism
Includes Trac-Lock non-locking swivel seat mount (550045 / 1100031-1)
Portable design: moves between any Plug-In base on the boat
ABYC Class AP H-31 Passenger rating
Compatible with any Plug-In base (sold separately)
Part Number: 3300601-AP
Normalized SKU: 3300601APUPC Code: 038132946354
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King Pin Post 3/4" Offset 13" #3610413-OSS
$66.72
$80.06
Springfield 3610413-OSS Seat PostsSpringfield King Pin Post 3/4" Offset 13" #3610413-OSSNormalized SKU: 3610413OSSUPC Code: 038132915572
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Plug-In Post For 238 Latch Mount 15" #3310715-L
$49.65
$59.58
Springfield 3310715-L Seat PostsSpringfield Plug-In Post For 238 Latch Mount 15" #3310715-LNormalized SKU: 3310715LUPC Code: 381329280916
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Elite Ped 30" Brite Post #1450030-P
$338.88
$422.97
Springfield 1450030-P Seat Posts4" Elite Fixed-Height Pedestal - 30"4″ Pedestal of .213″ thick aluminum with 12″ round base, polished finish. The pedestal is sized and pressed into base then rim welded for stability. Use with any 4″ Mariner II or Workhorse slide or swivel (sold separately). Normalized SKU: 1450030PUPC Code: 038132915169
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Kingpin Threaded 11" Post Anodized #1630411-A
$30.04
$35.85
Springfield 1630411-A Seat Posts
Hefty 1-3/4″ diameter post and reinforcement ring. Use with any KingPin™ seat mount or any threaded KingPin™ base (sold separately).
Normalized SKU: 1630411AUPC Code: 038132437111
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield 2-3/8" Thread-Lock Fixed-Height Post 13" #3793013-A
$76.42
$94.86
Springfield 3793013-A Seat Posts2-3/8" Thread-Lock™ Fixed-Height Post - 13"Sturdy 2-3/8″ high-strength aluminum post for use while underway. Locking collar prevents unintentional removal from base. Use with Trac-Lock™ non-locking seat mount (sold separately). Normalized SKU: 3793013AUPC Code: 038132939271
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Clipper 13" Locking Post #1440013-SAL
$107.59
$133.56
Springfield 1440013-SAL Seat Posts2-3/8" Clipper Fixed-Height Pedestal - 13"2-3/8″ Pedestal with 10″ round base and 9″ mounting pattern. Use with locking Trac-Lock™ slide or swivel (sold separately). Normalized SKU: 1440013SALUPC Code: 038132919129
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Taperlock Manual Adjust 13-16" #3603825-NS
$97.64
$121.21
Springfield 3603825-NS Seat PostsTaper-Lock™ Manual Adjust 13"-16"Features:
Use with any Taper-Lock™ base (sold separately)
Warranty: 5 Years
(3603825-NS and Swivel sold separately)
2-Piece sets include the following parts:
2-3/8″ Manual adjustable post (with posi-lock system)
Trac-LockTM non-locking 2-3/8″ swivel (#1100031-1)
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Normalized SKU: 3603825NSUPC Code: 038132984530
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Swivl-Eze
Swivl-Eze Extended Post 2-3/8" Socket 25" Floor to top Seat Mount #238625-1
$90.16
$111.92
Swivl-Eze 238625-1 Seat PostsSuper hard anodized aluminum alloy, exceeds type A driver requirements for lateral strength. Release button operates smoothly, allows easy release from base. Height measured from deck to top of seat mount. ABYC Code AO. Display packaged.Swivl-Eze Extended Post, 2-3/8" Socket, 25" Height-Floor,Top of Seat Mount, #238625-1Normalized SKU: 2386251UPC Code: 022697386250
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield 2-7/8" Trac-Lock III 25" #3664250-RV
$85.94
$106.69
Springfield 3664250-RV Seat Posts2-7/8" high-strength aluminum post. Use with 2-7/8" Stowable table mount and base mount (sold separately). 2-3/8" Tapered to 2-11/16". Includes a 5-year warranty.
2-7/8" high-strength aluminum post
Use with 2-7/8" Stowable table mount and base mount (sold separately)
2-3/8" Tapered to 2-11/16"
5-year warranty
Normalized SKU: 3664250RVUPC Code: 038132948884
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield KingPin Control Post Charcoal/Gray Seat Standard #1040357-KPC
$188.88
$239.89
Springfield 1040357-KPC Seat PostsFrom a completely flat position to 90° upright, the Control Post adjusts in every direction for complete comfort during even the longest days on the water. Features a standard pin and charcoal/gray seat. Constructed of durable materials to withstand the harsh marine environment.
KingPin Control Post with Charcoal/Gray Seat
Standard pin
Adjusts in every direction for complete comfort
Durable construction
5-year warranty
Normalized SKU: 1040357KPCUPC Code: 038132977723
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Adjustable Post KingPin Base 22-31" E-Coat Finish #1613401-EC
$62.73
$75.28
Springfield 1613401-EC Seat PostsSpringfield's 1613401-EC Standard Manual Adjustable Post is designed for use with KingPin Series Bases (sold separately). The pedestal manually adjusts from 22" to 31" with a Posi-Lock lever that secures the post at the desired height. Includes a 5-year warranty.
Manually adjusts from 22" to 31"
Posi-lock lever secures the post at the desired height
Use with KingPin Series Bases (sold separately)
E-coat finish
5-year warranty
Normalized SKU: 1613401ECUPC Code: 038132915787
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Threaded 15" Post for KingPin Anodized Finish #1630423-A
$49.97
$59.96
Springfield 1630423-A Seat PostsSpringfield's Threaded Fixed-Height Post is designed for use with KingPin seat mounts and threaded bases. It features a hefty 1.75" diameter and reinforcement ring. Includes a rust-resistant anodized finish and a five-year warranty.
Hefty 1.75" diameter post and reinforcement ring
Use with any KingPin seat mount and threaded base (sold separately)
Fixed Height: 15"
Rust-resistant anodized finish
5-year warranty
Normalized SKU: 1630423AUPC Code: 038132437234
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield Threaded 13" Offset Post for KingPin Satin Finish #1630402-CSS
$72.83
$90.41
Springfield 1630402-CSS Seat PostsSpringfield's Threaded Fixed-Height Offset Post is designed for use with KingPin seat mounts and threaded bases. They feature a hefty 1.75" diameter and provides a full 5" offset extension. Includes a rust-resistant satin finish and a five-year warranty.
Hefty 1.75" diameter x 13" fixed height stainless steel post
Provides a full 5" offset extension
Use with any KingPin seat mount and threaded base (sold separately)
Rust-resistant satin finish
5-year warranty
Normalized SKU: 1630402CSSUPC Code: 038132910881
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King-Pin 7" Threaded Base Ec #3630020
$55.98
$67.18
Springfield 3630020 Seat Posts
King-Pin 7" x 7" Threaded Square Steel Base, E-Coat Finish7" x 7" Mild steel base, with nylon bushing
Mount requires a 2-1/2" Hole in the deck
Use with standard KingPin™ Posts (sold separately)
Size: 7" x 7"
Finish: E-Coat Black
ABYC Code: B
Mount Type: Threaded
Normalized SKU: 3630020UPC Code: 038132921153
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Springfield
Springfield King-Pin 25" Coated Threaded 3/4" #3630414-EC
$56.57
$67.88
Springfield 3630414-EC Seat PostsSpringfield King-Pin 25" Coated Threaded 3/4" #3630414-ECNormalized SKU: 3630414EC
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.