{"product_id":"wholegrain-jack-classic","title":"Wholegrain - Jack Classic","description":"JACK lets you carry more things on your bike. It requires no tools to fit and securely attaches to bikes with a handle bar diameter of 22.2, 25.4 and 31.8mm. Its quick and easy to attach and remove so you can swap it from bike to bike. Please have a look at the compatibility diagrams and FAQs to make sure JACK fits your bike before you purchase.\u003cbr\u003eJACK is made from solid 304 stainless steel and comes with two adjustable length bungees (1.2m) with snake heads to secure your baggage, a bunch of spacers and inserts and 5 different length Loadstraps to fit JACK to your bike.\u003cbr\u003eThe silver JACK is a raw stainless steel with a media blasted finish.\u003cbr\u003eJACK is rated to carry 5kg max based on the negative affects of bike handling when loaded.\u003cbr\u003e \u003cstrong\u003eFAQs\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eHow much weight can JACK carry?\u003c\/strong\u003e\u003cbr\u003eJACK has been lab-tested and road-tested to safely carry up to 5kg.\u003cbr\u003eThat said, if you're riding smooth roads and feeling confident, you can push that limit slightly at your own risk. Just keep in mind, heavier loads can negatively affect your bikes handling. We dont officially recommend exceeding the limit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHow do I install JACK?\u003c\/strong\u003e\u003cbr\u003eYou won't need any tools. Watch the official installation video for a full walkthrough.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCan I fit JACK to carbon handlebars or stems?\u003c\/strong\u003e\u003cbr\u003eYes, JACK works with carbon. Just treat it with care like any carbon component.\u003cbr\u003eTip: Check under the spacers regularly to make sure no grit or dirt has gotten underneath, as thats what causes wear.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDoes JACK work with Redshift suspension stems?\u003c\/strong\u003e\u003cbr\u003eYes.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDoes JACK work with 26mm handlebars?\u003c\/strong\u003e\u003cbr\u003eYes. Many customers use the 25.4mm shims for 26mm bars. Some have even gently filed down the shims to get a better fit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDoes JACK work with 35mm handlebars?\u003c\/strong\u003e\u003cbr\u003eYes, with an added part. One of their brilliant Kickstarter backers designed a 3D-printable 35mm shim you can get made at your local print shop.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eIs JACK compatible with my bike?\u003c\/strong\u003e\u003cbr\u003eMost likely, JACK fits around 90% of bikes, including old-school cruisers and modern commuters, road and mountain bikes. Its designed for handlebar stems that clamp to:31.8mm \/ 25.4mm \/ 22.2mm bars.\u003cbr\u003eThere are a few specific spacing requirements. Check the compatibility diagrams on the product page to be sure.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhat if JACK breaks?\u003c\/strong\u003e\u003cbr\u003eIf you manage to break JACK we want to see it! Seriously, send us a pic, its rare and wed love to know how it happened.\u003cbr\u003eIf anything wears out or breaks, they stock spares for every single part. If youre out in the wild and a strap fails, JACK is designed to be field-repairable. Use any strap, rope, shoelace, wire, even a t-shirt to get back on the road.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhats in the box?\u003c\/strong\u003e\u003cbr\u003eJACK (the rack) with removable fabric base\u003cbr\u003ePairs of handlebar shims: 31.8mm, 25.4mm, 22.2mm\u003cbr\u003eTapered inserts for 25.4mm  22.2mm bars\u003cbr\u003eFive stem loadstraps (sizes XS to XL)\u003cbr\u003eAdjustable steerer retention strap with O-ring + rubber strap tidies\u003cbr\u003eTwo 1.2m bungee straps with snake-head buckles\u003cbr\u003eInstruction manual\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhere is JACK made?\u003c\/strong\u003e\u003cbr\u003eJACK is made in Shenzhen, China, where one half of the WholeGrain Cycles team is based. They work with highly skilled, ethical manufacturing partners who maintain high quality standards while keeping JACK affordable and accessible.\u003cbr\u003e\u003cbr\u003e \u003cul\u003e\n\u003cli\u003eH: 224mm, D: 284mm, W: 226mm\u003c\/li\u003e\n\u003cli\u003eWeight: 730g\u003c\/li\u003e\n\u003cli\u003eMax load: 5kg\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BikeParts.co.uk","offers":[{"title":"Default Title","offer_id":55615127683448,"sku":"WG-CJACK-BNGY","price":80.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/9434\/1977\/files\/Wholegrain-Jack-Classic-Rack-front-on-three-quarter-view_1000x1000_6f377b59-0482-4d46-8d4e-ee39f4bb6800.jpg?v=1784770534","url":"https:\/\/www.bikeparts.co.uk\/products\/wholegrain-jack-classic","provider":"BikeParts.co.uk","version":"1.0","type":"link"}