The Bike Trainer Tips 03： Thru-Axle For Bike Trainer
Unisky Team•5/14/2026•
Bike trainer Thru AxleP1.0,P1.5,01.753 in 1 bike train thrU Axle
A thru axel is a thicker rod, the common rear axle is 12mm in diameter. Like the image below.
Thru axles are threaded directly into your bike frame. Your bike has a thru axle if the “drop out” is a hole, rather than a U-shaped dropout. Thru axles provide a stiffer ride, which is beneficial for mountain bikers.
If my bike has Thru Axel, how do I mount my bike onto a Wheel On Turbo Trainer?
You need to check what size your thru axel is and then will you need to purchase a thru axle adapter which fits your bike.
How do I know what size thru Axle I need?
In many cases, for many bike brands, you can see all the information on the stock thru-axle that came with your bike, as shown in the picture.
If you can not find the information of size , you should measure the dimensions as followings. There are 3 dimensions you need:
1. Thread pitch of your axle: Place your axle threads on top of the Fitment Guide image below to find the matching thread pitch. Determine if it is a 1.0, 1.5, or 1.75 thread pitch.
You can use the following standards to determine the thread specification.
Please note: Specialized bikes are usually always 1mm thread pitches
2. Length of the diameter: measure the end of your axle shaft.
3. Length of the axle: measure the straight length of your axle shaft. Include the over-locknut dimensions
Based on the information measured above, you can choose the corresponding thru-axle specially designed for the trainer to start your indoor cycling journey. Of course, when you need to ride outdoors, please replace it with your bike's original thru-axle to better protect both you and your bike
We ,unisky has a new product: the 3-in-1 thru-axle, which can conveniently meet the needs of bicycles with all three thread specifications. For more details, please see the link below."
Thru axles are threaded directly into your bike frame. Your bike has a thru axle if the “drop out” is a hole, rather than a U-shaped dropout. Thru axles provide a stiffer ride, which is beneficial for mountain bikers.
If my bike has Thru Axel, how do I mount my bike onto a Wheel On Turbo Trainer?
You need to check what size your thru axel is and then will you need to purchase a thru axle adapter which fits your bike.
How do I know what size thru Axle I need?
In many cases, for many bike brands, you can see all the information on the stock thru-axle that came with your bike, as shown in the picture.
If you can not find the information of size , you should measure the dimensions as followings. There are 3 dimensions you need:
1. Thread pitch of your axle: Place your axle threads on top of the Fitment Guide image below to find the matching thread pitch. Determine if it is a 1.0, 1.5, or 1.75 thread pitch.
You can use the following standards to determine the thread specification.
Please note: Specialized bikes are usually always 1mm thread pitches
2. Length of the diameter: measure the end of your axle shaft.
3. Length of the axle: measure the straight length of your axle shaft. Include the over-locknut dimensions
Based on the information measured above, you can choose the corresponding thru-axle specially designed for the trainer to start your indoor cycling journey. Of course, when you need to ride outdoors, please replace it with your bike's original thru-axle to better protect both you and your bike
We ,unisky has a new product: the 3-in-1 thru-axle, which can conveniently meet the needs of bicycles with all three thread specifications. For more details, please see the link below."
https://unisky-production-app.vercel.app/products/bike-parts/thru-axle"