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2-3/8″ Adjustable Mainstay Package with Locking Swivel & Slide
Package includes 2-3/8″ high-strength anodized aluminum air-powered height adjustment pedestal (500 newton cylinder) with 9″ round anodized base, and locking Trac-Lock™ swivel and slide.
Specifications:
- Adjusts: 14.5″ to 20.5″
- Seat Mount: 3100531-LAR1
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![Springfield 2-7/8" Heavy-Duty Adjustable Mainstay Package - 12"-14.5" [1250450-L]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/springfield-2-7-8-heavy-duty-adjustable-mainstay-package-12-14-5-1250450-l.webp)
![Springfield 2-7/8" Trac Lock III SlideSwivel [1100521-1]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/springfield-2-7-8-trac-lock-iii-slideswivel-1100521-1.webp)
![Springfield 2-3/8" Explorer Fixed-Height Locking Pedestal - 9" [1250309-LNS]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/springfield-2-3-8-explorer-fixed-height-locking-pedestal-9-1250309-lns.webp)
