{"product_id":"ganopper-seatpost-shim-31-6-to-30-9-bicycle-seat-post-adapter-reducing-sleeve-shim-for-mountain-bike-seat-post-tube-shim-30-9-3","title":"Ganopper Seatpost Shim 31.6 To 30.9 Bicycle Seat Post Adapter Reducing Sleeve Shim For Mountain Bike Seat Post Tube Shim (30.9-3","description":"\u003cp\u003eTips Because of hollow design,In the process of transportation,it may be out of shapeIf you found any deformation,please kindly exchange one shim Product Feature: Made of full cNc precision machining aluminum alloy, anti-slip, light weight and durable Easy to install and remove, convenient for you to use With this seat post tube adapter, you can change the bicycle seat tube to the size you want Suitable for MTB bike, mountain bike, road bike, etc Please check the outer diameter of your bicycle seat tube check original seatpost Laser Mark on the tubeMeasure the inner diameter of the old clamp Or measure the outside diameter of the seat tube Then make the right choice Specification condition: 100% Brand New Material: Aluminum Alloy color: black Length:100mm393 inch Inner diameter: 309mm122 inch Outer diameter: 316mm124 inch convert any 309mm seatpost to a 316mm seatpost Package list: 1 * Bike Seatpost Shim 309 TO 316\u003c\/p\u003e","brand":"Ganopper","offers":[{"title":"Default Title","offer_id":44826653393093,"sku":"WBSPTB08XPGJK2J","price":13.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/3745\/9397\/files\/71xxR7CseML.jpg?v=1750150038","url":"https:\/\/onlinesportsmall.com\/products\/ganopper-seatpost-shim-31-6-to-30-9-bicycle-seat-post-adapter-reducing-sleeve-shim-for-mountain-bike-seat-post-tube-shim-30-9-3","provider":"Onlinesportsmall","version":"1.0","type":"link"}