Looking for a locking thru axle?

You’ve come to the right place. Keep your wheels safe with the best security thru axles on the market.

There are still very few standards between through-axle manufacturers, and determining the size you need may seem intimidating at first. These measurements are frequently printed on your thru axle itself, so if you’re unsure what size you need that may be the best place to start. Please contact us if you have any sizing questions. Below are the Pitlock thru axles currently being manufactured, which align with the sizing specifications outlined in this table.

All measurements are in mm.

Set Name Hub Size (a) x (c) Total Length (b) Thread Length (d) Thread Pitch
Set 17 (standard) 15 x 100 148 15 M15 x 1.5
Set 17 (boost) 15 x 110 158 15 M15 x 1.5
Set 18 (standard) 15 x 100 146 15 M14 x 1.5
Set 18 (boost) 15 x 110 156 15 M14 x 1.5
Set 19 15 x 100 133.2 15 M15 x 1.5
Set 20 (standard) 12 x 142 174 20 M12 x 1.75
Set 20 (boost) 12 x 149 179 20 M12 x 1.75
Set 21 (Standard) 15 x 100 140 N/A N/A
Set 21 (Boost) 15 x 110 150 N/A N/A
Set 22 15 x 100 118 N/A N/A
Set 23 (standard) 12 x 100 125 15 M12 x 1.5
Set 23 (narrow) 12 x 100 120 15 M12 x 1.5
Set 24 (standard) 12 x 142 170 20 M12 x 1.5
Set 24 (boost) 12 x 148 175 20 M12 x 1.5
Set 25 15 x 100 125 15 M15 x 1.5
Set 26 (standard) 12 x 142 165 20 M12 x 1.0
Set 26 (boost) 12 x 142 170 20 M12 x 1.0
Set 26 (boost long) 12 x 148 175 20 M12 x 1.0
Set 27 12 x 100 120 15 M12 x 1.0
through axle measurement guide

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Showing 1–10 of 11 results

  • Set 17 Pitlock Rockshox Maxle Locking Thru Axle 15mm

    (3) From: $70.99 Upgrade your 15mm RockShox fork with the unmatched security of Pitlock. Set17 fits all SRAM Rockshox forks which use the 15mm x 100mm Maxle, Maxle Lite, and Maxle Ultimate. This set can be purchased in two lengths: Standard or Boost. Standard installation width is 15mm x 100mm, and Boost installation width is 15mm x 110mm. This set comes with all the necessary components for installation: one black thru axle, and up to two keys.
  • Set 18 Pitlock Fox Locking Thru Axle 15mm

    (5) From: $65.99 Lock down your Fox Racing Shox thru axle with the unmatched security of Pitlock. Set18 is suitable for use with all Fox forks which use a 15mm x 100mm thru axle (including Racing Shox thru axles.) This set can be purchased in two lengths: Standard or Boost. Standard installation width is 15mm x 100mm, and Boost installation width is 15mm x 110mm. This set comes with all the necessary components for installation: one black thru axle, and up to two keys.
  • Set 19 Thru Axle for Stevens Bikes

    From: $82.99 Replace the thru axle on your STEVENS Superlite fork with a Pitlock security system. Set 19 is suitable for use on the following models from STEVENS: Super Flight, Courier Luxe, 8X Lite Tour, P18 (models 2016-2018), and C12 (models 2019-2020.) Other models may not be compatible. This set measures 15mm x 133.2mm (the total length), with an installation width of 15mm x 100mm. The set comes complete with all necessary components for installation: one black thru axle, one thread socket, and up to two keys.
  • Set 20 Thru Axle 12mm for Rock Shox Maxle

    (4) From: $72.99 Upgrade your rear Maxle with the unmatched security of Pitlock. Set 20 is compatible with rear wheels using Rockshox Maxle thru axle mounts. This set can be purchased in two lengths: Standard or Boost. Standard installation width (the hub width) is 12mm x 142mm, and Boost installation width (the hub width) is 12mm x 148mm. The total length of the standard and boost thru axles is 174mm and 179mm respectively. You may see different lengths advertised on other websites, but this length is correct (see the photos) and is what is labeled on the packaging itself. This set comes with all the necessary components for installation: one black thru axle, and up to two keys.
  • Set 21 Thru Axle for Suntour (Mountain Bike)

    (2) From: $66.99 Replace your mountain bike's thru axle with a Pitlock security system. Set21 is fully compatible with Suntour forks that use the QLoc locking system. This set can be purchased in two lengths: Standard or Boost. Standard installation width is 15mm x 100mm, and Boost installation width is 15mm x 110mm. This set comes with all the necessary components for installation: one black thru axle, one 15mm x 100mm (15mm x 110mm) adapter, and up to two keys.
  • pitlock set 22

    Set 22 Thru Axle for Suntour (Trekking)

    From: $71.99 Upgrade your thru axle with a Pitlock security system. Set 22 is fully compatible with Suntour Trekking forks (QLoc) with narrow 10mm dropouts. This set measures 15mm x 118mm (the total length), with an installation width (the hub width) of 15mm x 100mm. You may see a different total length advertised on other websites, but this length is correct (see the photos) and is what is labeled on the packaging itself. This set comes complete with the necessary components for installation: one black thru axle, one 15mm x 118mm adapter sleeve, and up to two keys.
  • Set 23 12mm Thru Axle for Road Bikes

    (7) From: $69.99 Upgrade your road or cyclocross bike's thru axle with a Pitlock security system. This set can be purchased in two sizes: 12mm x 120mm ("narrow") or 12mm x 125mm ("standard".). The installation width is the same for both: 12mm x 100mm. This set comes complete with the necessary components for installation: one black thru axle, and up to two keys.
  • Set 24 E-Thru Replacement Thru Axle

    (4) From: $71.99 Replace your "E-Thru" thru axle with a Pitlock security system. This set can be purchased in two lengths: Standard or Boost. Standard installation width is 12mm x 142mm, and Boost installation width is 12mm x 148mm. This set comes with one black thru axle, up to two keys, and the necessary components for installation.
  • set 25 overview

    Set 25 Thru Axle for Road & Cyclocross 15mm Hubs

    (4) From: $59.99 Replace your road and cyclocross bike's 15mm hub with Pitlock security. This set is intended to replace thru axles on road and cyclocross forks with 15mm Maxle mounts. The set comes in one length, 15mm x 125mm. The thread pitch is M15 x 1.5mm.
  • Set 26 overview

    Set 26 Thru Axle for X-12 Mount

    (2) From: $71.99 Replace your X-12 Mount thru axle with a Pitlock security system. This set can be purchased in three lengths: Standard, Boost, and Boost Long. Each thru axle is an M12 x 1.0mm thread pitch, and varies in length.