F.A.Q.

What are the Advantages of Tubeless Ready Wheelset

1. Lighter: Since no tubeless tape wrapping on the Tubeless Ready wheels, the weight of Tubeless Ready wheel goes lighter than the weight of common wheel with tape wrapped;

2. Stronger: No holes drilling on rim bed (except valve holes) and the carbon fibers not being damaged, the rim bed would be kept integral and the strength increases;

3. Safe: Tubeless Ready wheels no risk of air leaking from the rim bed, the cycling stays safe and the journey could be longer than riding bike with common wheels.

Notes: Tubeless Ready wheels could be mounted tubes too.

How much spoke tension should I use?

Although the maximum recommended spoke tension of our rims is 130kgf, you don't need to lace your wheelset so intense.

Generally, 3 of charging tension are involved in wheel building. Riding comfortability and performance are supposed to be considered while choosing charging tension.

A. Tension for "transportation riders" (Comfortability)

80-90kgf are ideal for regular transportation riders or exercise on a regular basis.

B. Tension for "enthusiast riders" (Balance)

100-110kgf are good for people with enjoyful and training purpose.

C. Tension for "professional riders" (Performance)

120-130kgf are charged for riders who are expertized in riding or competition.

Avoid using ERD, that’s very often a misleading system. Use SED to caculate.

"Spoke-End Diameter"

Rim manufacturers always offer ERD figures however we warmly recommend to precisely measure the rim+nipple combination.

Basically a correct spoke calculation requires exact "spoke-end diameter" and rim drilling.

Spoke-end diameter depends on your rim internal diameter and nipple type.

How to measure "spoke-end diameter"

Spoke-end diameter depends on your rim and nipple type.

Below you see the 2 methods:
External nipple configuration
Internal nipple configuration

Take measures very precisely because a correct nipple/spoke assembly accepts a spoke-length tolerance of +/-1mm only.
(All measures are expressed in mm)

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External nipple configuration

1) Insert 2 spokes with nipples into 2 opposite rim holes.

This simple trick may help you to have spokes aligned an slightly tensioned.

2) Precisely measure distance between nipples.

Be careful to take measure between the 2 nipple-ends.

3) Add 2x nipple height to the measure above. This is "spoke-end" diameter.
Note: with slotted nipples measure height inside the cut.

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Internal nipple configuration

You can get the necessary data following the procedure below:
1) Precisely measure outer rim diameter (A).

2) Insert 1 nipple into hole. Use a spoke to hold nipple in position.
3) Precisely measure distance between nipple-end and outer rim diameter (B).

This is the correct caliper positioning inside the rim (don't cut your rim!)

4) A-2B = "spoke-end diameter".

Modular Design

Imtos axles feature a modular design with interchangeable threaded heads, allowing riders to adjust both thread pitch and effective length. This flexible system ensures compatibility with most bike frames, making one axle set adaptable to multiple bicycles.

Ultra-Light Structure

IMTOS products feature a next-generation carbon layup structure designed to optimize fiber orientation and structural efficiency.

This innovative layering method allows us to significantly reduce weight while maintaining exceptional strength and durability.

For example, the IMTOS carbon thru axle weighs only 25g, yet it achieves over 1000 kgf tensile strength and more than 20 Nm torque resistance.

This advanced engineering ensures reliable performance while delivering meaningful weight savings for riders who demand the highest performance

Room-Temperature Coating

IMTOS uses an advanced Room-Temperature Coating Technology that eliminates the need for secondary high-temperature curing commonly used in traditional coating processes. By avoiding additional heat exposure, the original structural integrity of the carbon fiber is better preserved.

This process helps maintain the material’s maximum strength and stiffness, while ensuring a clean and durable surface finish without compromising performance.

Thermoplastic Carbon Technology

Thermoplastic composite materials use linear polymer matrices combined with high-strength carbon fibers. The inherent toughness of thermoplastic polymers gives the composite excellent impact resistance and damage tolerance.

Compared with traditional thermoset composites, thermoplastic carbon structures offer superior impact performance and outstanding fatigue resistance, ensuring long-term durability under repeated stress.

Another key advantage is the ability for secondary compression molding. Defective or imperfect parts can be reprocessed through a second pressing process, restoring structural integrity without reducing the mechanical performance of the final product.

This advanced technology allows IMTOS components to achieve high strength, improved reliability, and consistent performance while maintaining lightweight construction.

Recyclable Carbon Technology

IMTOS utilizes advanced thermoplastic carbon composite technology, which enables carbon fiber components to be chemically separated and recycled at the end of their lifecycle.

Through a specialized solvent-based process, thermoplastic resin can be extracted from the carbon fiber structure and purified through filtration, concentration, and extraction, producing high-purity recyclable resin. At the same time, the recovered carbon fibers retain over 90% of their original mechanical performance.