![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package w\/Tension Knob - 9" Base [1250456-LC]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/608x608/products/33248/45370/110580XL__27649.1762227918.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package w\/Tension Knob - 9\" Base [1250456-LC]")
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package w\/Tension Knob - 9" Base [1250456-LC]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/1500x1500/products/33248/45370/110580XL__27649.1762227918.jpg?c=1&imbypass=on "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package w\/Tension Knob - 9\" Base [1250456-LC]")
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 10"-12" [1250456-L]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/33247/45369/110579XL__70900.1762227916.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package - 10\"-12\" [1250456-L]")
Springfield 2-7/8" Heavy-Duty Adjustable Mainstay Package - 10"-12" [1250456-L]
Springfield Marine
DEAN-110579
$482.99
RRP:
$599.99
2-7/8" Heavy-Duty Adjustable Mainstay Package - 10"-12"Package includes 2-7/8″ high-strength rigid 4-keyed anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″...
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package w\/Slide [1250301]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/33245/45367/110577XL__06287.1762227911.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package w\/Slide [1250301]")
Springfield 2-7/8" Heavy-Duty Adjustable Mainstay Package w/Slide [1250301]
Springfield Marine
DEAN-110577
$501.99
RRP:
$623.99
2-7/8" Heavy-Duty Adjustable Mainstay Package with SlidePackage includes 2-7/8″ high-strength rigid 4-keyed anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″...
![Springfield 2-7\/8" Heavy-Duty Adjustable Mainstay Package - 12"-14.5" [1250450-L]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/33246/45368/110578XL__65866.1762227913.jpg?c=1 "Springfield 2-7\/8\" Heavy-Duty Adjustable Mainstay Package - 12\"-14.5\" [1250450-L]")
Springfield 2-7/8" Heavy-Duty Adjustable Mainstay Package - 12"-14.5" [1250450-L]
Springfield Marine
DEAN-110578
$541.99
RRP:
$672.99
2-7/8" Heavy-Duty Adjustable Mainstay Package - 12"-14.5"Package includes 2-7/8″ high-strength rigid 4-keyed anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″...
![Springfield 2-7\/8" Heavy Duty Mainstay w\/Swivel [1250300]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/24355/31483/99070XL__32362.1715770518.jpg?c=1 "Springfield 2-7\/8\" Heavy Duty Mainstay w\/Swivel [1250300]")
Springfield 2-7/8" Heavy Duty Mainstay w/Swivel [1250300]
Springfield Marine
DEAN-99070
$400.99
RRP:
$532.99
2-7/8" Heavy Duty Mainstay with SwivelNon-removable pedestal system in 2-7/8" offers a heavy-duty base and post for today's larger and faster recreational boats. The base is permanent mold AC7A...
![Springfield 2-3\/8" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/33288/45428/111098XL__85357.1762390510.jpg?c=1 "Springfield 2-3\/8\" Adjustable Mainstay Package w\/Locking Swivel [1250100-L1]")
Springfield 2-3/8" Adjustable Mainstay Package w/Locking Swivel [1250100-L1]
Springfield Marine
DEAN-111098
$313.99
RRP:
$416.99
2-3/8" Adjustable Mainstay Package with Locking SwivelPackage includes 2-3/8″ high-strength anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″ round anodized...
