Thule Thru Axle Shimano 172 or 178mm (M12 x 1.5) | live price, prepared checkout

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Checked facts

Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 23 checked facts, checked 2026-10-18T09:32:43.254Z. Research depth: trimmed read. Deep read: the store's own data and 5 outside pages (the store's own product page; maker page; manual; regulator recall search (CPSC (United States)); regulator recall search (Health Canada)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada: A CPSC recall search for Thule with this part number returned one 2012 record, but it covers Chariot child bicycle trailers and conversion kits whose hitch mechanisms could crack, not this thru-axle adaptor. The Health Canada records returned for Thule cover a child bike seat, hitch bike carriers, rooftop tents, strollers and a car seat adapter, none of them this adaptor.

• purpose: The stores describe it as an adapter for Shimano 12 mm rear axles that lets you connect a bike trailer to the bicycle.. Source: https://strolleria.myshopify.com/products.json (listing), read 2026-10-17T19:42:33.529Z.
• store description: The store page repeats only Thule's one-line description, with no added specification.. Source: https://strolleria.myshopify.com/products/thule-adapter-172-178mm-m12x1-5 (guide), read 2026-10-18T09:24:24.163Z.
• weight: The adapter weighs 0.2 lb (about 90 g).. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• dimensions and thread: For the Shimano 172 or 178 mm axle the overall adapter length is 205 mm, the thread pitch is M12 x 1.5, the part number is 20110734 and it installs with a nut.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• barcode: One retailer gives the barcode for this SKU as 872299045457.. Source: https://strolleria.myshopify.com/products.json (listing), read 2026-10-17T19:42:33.529Z.
• country of origin: Thule states the country of origin as the USA.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• installation type: This version is a nut-fitting adapter, not the bolt-fitting type used for some other lengths.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• listing difference: One of the three retailers titles the same Thule SKU as a 12 x 148 adaptor rather than naming the 172/178 mm length, so the listing name alone should not be relied on.. Source: https://strolleria.myshopify.com/products.json (listing), read 2026-10-17T19:42:33.529Z.
• compatibility: Thule lists it as compatible with these trailers: Cadence, Chariot Cab, Coaster XT, Chariot Cheetah XT, Courier, Chariot Cross, Chariot Cross 2, Chariot Lite, Chariot Lite 2, Chariot Sport and Chariot Sport 2.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• how to choose: Thule says you must identify five things on your own axle before choosing an adapter: brand, diameter, length, geometry and thread pitch.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• other retailer wording: That retailer's own description says the adaptor is designed for 12 mm rear axles so a bike trailer can be attached.. Source: https://strolleria.myshopify.com/products.json (listing), read 2026-10-17T19:42:33.529Z.
• model number: The maker's model number is 20110734, matching the SKU the stores list.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• axle geometry: Shimano and Maxle axles are the straight type in Thule's scheme, while Syntace axles are coned, so the geometry must match the adapter.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• installation: Thule describes the fitting as simple and easy.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• spacers: Spacers are used on the shorter settings, and the adapter's own instructions tell you which spacer to use.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• colour: The adapter is black.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• thread pitch check: Thule advises asking your bicycle dealer to confirm the thread pitch if you are unsure.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• warning: The maker attaches a California Proposition 65 warning to the product.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• other Shimano options: The other Shimano M12 x 1.5 options in the same guide are 159/165 mm (20110730), 170 mm bolt type (20100766), 209 mm (20110735) and 229 mm fatbike (20110738).. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• warning: The Proposition 65 notice says the materials can cause cancer and reproductive harm.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• manual revision: The fitting guide Thule publishes is dated February 2025.. Source: https://www.thule.com/-/s/approved/std.lang.all/07/58/1580758.pdf?rev=4.1 (manual), read 2026-10-18T09:24:26.089Z.
• range of versions: The same Shimano M12 x 1.5 adapter family is sold in five lengths: 159/165, 170, 172/178, 209 and 229 mm.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.
• returns and guarantee: Thule advertises 30-day returns with exceptions and a guarantee on this product.. Source: https://www.thule.com/en-us/bike-trailers/bike-trailer-accessories/thule-thru-axle-shimano-m12-x-15-_-20110734 (guide), read 2026-10-18T09:24:25.489Z.

The full evidence pack, with every citation, source and gap.

Questions we researched but could not confirm

Every fact above is cited. To find them we read the store listing, the maker's page, the manual and the recall records of CPSC (United States) and Health Canada and searched for regulator recall notices, owner reviews, blogs, owner forums and video reviews. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess.

• Does it fit a 12 x 148 mm Boost rear axle?
• Is the mounting nut included, or must I buy it separately?
• Are the spacers needed for the 172 mm setting included in the box?
• What exactly comes in the box?
• How long is the warranty and what does it cover?
• Is the black finish painted or anodised, and will it wear off?
• How far does the adapter protrude past the bike frame?
• Do I need any tools other than a hex key to install it?
• Which specific Shimano axle models are confirmed to fit?
• Does it work with bike trailers from other brands?
• Can the adapter be left fitted when not towing a trailer?
• What is the metal and its surface treatment?

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