{"product_id":"bryton-gardia-300l-seatpost-mount-replacement-mount-for-round-aero-d-shaped-seatposts-26g","title":"Bryton Gardia 300L Seatpost Mount – Replacement Mount for Round, Aero \u0026 D-Shaped Seatposts, 26g","description":"\u003cp\u003eThe \u003cstrong\u003eBryton Gardia Seatpost Mount\u003c\/strong\u003e is the replacement seatpost mount for the \u003ca href=\"\/products\/bryton-gardia-300l-rear-light-radar\"\u003eBryton Gardia 300L Rear Light \u0026amp; Radar\u003c\/a\u003e — the same mount included with the Gardia 300L when purchased new, available here as a spare or replacement. It fits \u003cstrong\u003e27.2mm, 30.9mm, and 31.6mm\u003c\/strong\u003e seatposts in \u003cstrong\u003eround, D-shaped, and aero\u003c\/strong\u003e profiles, covering the most common road and gravel bike seatpost sizes and shapes. At just \u003cstrong\u003e26g\u003c\/strong\u003e, it adds minimal weight to the rear of the bike.\u003c\/p\u003e\n\n\u003cp\u003eThe mount uses a strap-based attachment system that wraps around the seatpost and secures the Gardia 300L in the correct rearward-facing orientation for effective radar detection and rear visibility. It's the appropriate choice for bikes where the seatpost is accessible and within the listed size range. For bikes where seatpost mounting isn't practical — integrated seatposts, dropper posts, or seatpost-mounted saddle bags — the \u003ca href=\"\/products\/bryton-gardia-saddle-rail-mount\"\u003eBryton Gardia Saddle Rail Mount\u003c\/a\u003e is the alternative. Browse the full \u003ca href=\"\/collections\/bryton\"\u003eBryton range\u003c\/a\u003e or our \u003ca href=\"\/collections\/computers-gps\"\u003ecomputers and GPS collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It's Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement or spare seatpost mount for the \u003ca href=\"\/products\/bryton-gardia-300l-rear-light-radar\"\u003eBryton Gardia 300L\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eFits 27.2mm, 30.9mm, and 31.6mm seatposts — round, D-shaped, and aero profiles\u003c\/li\u003e\n\u003cli\u003e26g — minimal added weight\u003c\/li\u003e\n\u003cli\u003eCorrect rearward-facing orientation for radar detection and rear visibility\u003c\/li\u003e\n\u003cli\u003eStandard seatpost setups on road and gravel bikes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It's NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeatposts outside the listed sizes (27.2mm, 30.9mm, 31.6mm) or non-standard profiles\u003c\/li\u003e\n\u003cli\u003eIntegrated seatposts, dropper posts, or bikes with seatpost-mounted saddle bags — use the \u003ca href=\"\/products\/bryton-gardia-saddle-rail-mount\"\u003eGardia Saddle Rail Mount\u003c\/a\u003e instead\u003c\/li\u003e\n\u003cli\u003eDevices other than the \u003ca href=\"\/products\/bryton-gardia-300l-rear-light-radar\"\u003eBryton Gardia 300L\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this the same mount included with the Gardia 300L?\u003c\/strong\u003e\u003cbr\u003eYes — this is the same seatpost mount included with the \u003ca href=\"\/products\/bryton-gardia-300l-rear-light-radar\"\u003eBryton Gardia 300L\u003c\/a\u003e when purchased new. It's available here as a spare or replacement if the original mount is lost or damaged.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhich seatpost sizes and shapes does it fit?\u003c\/strong\u003e\u003cbr\u003eThe mount fits 27.2mm, 30.9mm, and 31.6mm seatposts in round, D-shaped, and aero profiles — covering the most common road and gravel bike seatpost sizes. If your seatpost is outside these sizes or has an unusual profile, the \u003ca href=\"\/products\/bryton-gardia-saddle-rail-mount\"\u003eGardia Saddle Rail Mount\u003c\/a\u003e may be a better option.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat if my seatpost is integrated or I have a dropper post?\u003c\/strong\u003e\u003cbr\u003eFor bikes with integrated seatposts, dropper posts, or where the seatpost position is occupied by a saddle bag, the \u003ca href=\"\/products\/bryton-gardia-saddle-rail-mount\"\u003eBryton Gardia Saddle Rail Mount\u003c\/a\u003e is the appropriate alternative — it attaches to the saddle rails instead of the seatpost and is compatible with round and oval rail profiles.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the mount position the Gardia 300L correctly for radar detection?\u003c\/strong\u003e\u003cbr\u003eYes — the seatpost mount is designed to position the Gardia 300L in the correct rearward-facing orientation for effective 190-metre radar detection and maximum rear light visibility. Ensure the unit is level and facing directly rearward after installation for optimal performance.\u003c\/p\u003e","brand":"Bryton","offers":[{"title":"Black","offer_id":46564292460719,"sku":"BR561104000057","price":15.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/51459-pm.jpg?v=1770988204","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/bryton-gardia-300l-seatpost-mount-replacement-mount-for-round-aero-d-shaped-seatposts-26g","provider":"Swinnerton Cycles","version":"1.0","type":"link"}