{"product_id":"springfield-1640401-spring-lock-offset-extension-post-13-inch-5-inch-offset-1-3-4-inch-diameter","title":"Springfield 1640401 Spring-Lock Offset Extension Post, 13 Inch, 5 Inch Offset, 1-3\/4 Inch Diameter","description":"\u003cp\u003eThe Springfield 1640401 Spring-Lock Offset Extension Post is a 13 inch post built to add a full 5 inch offset to a boat seat, moving the seating position away from the mount for better legroom, sightlines, or console clearance. It is constructed with a hefty 1-3\/4 inch diameter shaft and finished in silver, giving it a substantial, marine-grade feel that stands up to regular use aboard a boat.\u003c\/p\u003e\u003cp\u003eThis post is designed to work as part of the Spring-Lock Series: it installs with any Spring-Lock Non-Locking Seat Mount and any Non-Locking Spring-Lock Base, both sold separately. The offset design lets boat owners reposition a seat without changing the base or mount hardware already installed on the deck. Overall footprint is 7 inches by 7 inches, and the post weighs 1.8 pounds.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Springfield\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 1640401\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Spring-Lock Offset Extension Post\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost Length:\u003c\/strong\u003e 13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffset:\u003c\/strong\u003e 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 1-3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Dimensions:\u003c\/strong\u003e 7 inches x 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Mounts:\u003c\/strong\u003e Spring-Lock Non-Locking Seat Mounts (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Base:\u003c\/strong\u003e Non-Locking Spring-Lock Base (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 038132915008\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal fit with any Spring-Lock Non-Locking Seat Mount and any Non-Locking Spring-Lock Base. Mount and base are sold separately.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the offset on the Springfield 1640401 post?\u003c\/strong\u003e The Springfield 1640401 Spring-Lock Offset Extension Post provides a full 5 inch offset, shifting the seat position away from the mounting point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the 1640401 offset post?\u003c\/strong\u003e It measures 13 inches, with a hefty 1-3\/4 inch diameter shaft.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 1640401 include a seat mount or base?\u003c\/strong\u003e No. The Springfield 1640401 post is used with a Spring-Lock Non-Locking Seat Mount and a Non-Locking Spring-Lock Base, both of which are sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 1640401 post made of?\u003c\/strong\u003e The Springfield 1640401 Spring-Lock Offset Extension Post is built from stainless steel for durability in a marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Springfield 1640401 post?\u003c\/strong\u003e It has a silver finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Springfield 1640401 post weigh?\u003c\/strong\u003e It weighs 1.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this post work with a locking Spring-Lock base?\u003c\/strong\u003e No. The Springfield 1640401 is designed for use with Non-Locking Spring-Lock seat mounts and bases, not locking versions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the overall dimensions of the 1640401?\u003c\/strong\u003e The Springfield 1640401 Spring-Lock Offset Extension Post has overall dimensions of 7 inches by 7 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I use an offset extension post instead of a standard post?\u003c\/strong\u003e An offset post like the Springfield 1640401 repositions the seat 5 inches away from the mounting base, which is useful for improving legroom, console clearance, or driving position without relocating the mount hardware.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Springfield 1640401 a genuine Springfield part?\u003c\/strong\u003e Yes, the 1640401 is a genuine Springfield Spring-Lock Series offset extension post.\u003c\/p\u003e","brand":"Springfield","offers":[{"title":"Default Title","offer_id":49025165590747,"sku":"S-M-1640401","price":83.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/1640401__20959.1763741628.500.750.jpg?v=1785329196","url":"https:\/\/www.goodvibesmarina.com\/products\/springfield-1640401-spring-lock-offset-extension-post-13-inch-5-inch-offset-1-3-4-inch-diameter","provider":"Good Vibes Marina","version":"1.0","type":"link"}