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Manual Geweih handlebar

Thank you for purchasing tune products! Our products are designed and manufactured to the highest standards. This manual informs you about the proper handling and care of our products.


Our components are high-end parts and must always be assembled and used in accordance with the user manual. Please read this manual carefully and follow the instructions. If you are not confident with the assembly, please contact your dealer.

In case of problems with the function of the product, it must not be used. In this case, contact your dealer immediately!


The assembly instructions must be followed! Failure to follow the instructions can lead to defects and injuries! If the necessary tools for correct installation are not available, the installation must be carried out by a specialist workshop using the appropriate tools!
Technical data for the product can be found on our website in the product description and for download in the service area.
Assembly preparation

Before you can start with the assembly, the compatibility of the stem and handlebar must be checked:

  1. Check the instructions for your stem for compatibility with the diameter of the handlebar. If your stem is not compatible with the handlebar, the handlebar must not be used!
  1. Check the stem clamp for sharp edges. If the clamp is sharp-edged, the edges must be broken with a file before assembly in order to avoid damage to the handlebars.
Mounting the handlebar

After completing the assembly preparations with a positive result, follow these steps to mount the handlebar:

  1. Loosen and remove the front plate of the stem.
  2. Apply the enclosed assembly paste thinly to the clamping surfaces of the stem. The paste increases the friction and ensures a secure clamping with a lower torque.
  3. Insert the handlebar into the stem and roughly align it.
  4. Secure the handlebars against slipping by hand-tightening the front plate screws of the stem.
  5. Tighten the stem clamp within the foreseen clamping area (rough surface area) according to the manufacturer's specifications. Do not exceed the maximum tightening torque of the handlebar!
  6. Tighten the shift-brake levers within the foreseen clamping area (rough surface area) according to the manufacturer's specifications. Do not exceed the maximum tightening torque of the handlebar!
  7. Check the alignment of the handlebars and the shift-brake levers and readjust if necessary.
  8. Mount bar tape or grips before your first ride to increase comfort.
When mounting the handlebar, under no circumstances should grease be applied in the clamping area!
Attaching handlebar attachments is not permitted!
The markings on the handlebar help with symmetrical and repeatable alignment.
Our Geweih handlebar is designed for use with the bar-end junction box. It is NOT possible to route cables completely inside the handlebar! Due to the design and the manufacturing process, the interior is not completely continuous. In any case, you must refrain from drilling additional openings! Any modification on the handlebar voids the warranty!
Tightening torques
All screws and connectors must always be mounted with a calibrated torque wrench in compliance with the maximum torques! Non-compliance with the torque specifications can lead to defects and injuries!



Stem clamping screws

Max. 5Nm

Shift-brake lever clamping screws

Max. 4Nm

Intended use

Our products are designed and tested according to the current standards, which define the safety requirements and test methods for mountain bikes off-road and racing bikes for amateur use on public roads. In both cases, the standards for bikes with adjustable saddle height with a minimum saddle height of 635mm apply.

The standards mentioned do not apply to special types of bicycles such as tandems or bicycles which are used for special applications such as tough competition, stunts or acrobatics.

The standards also do not apply to bicycles with a saddle height ≤ 435mm and a saddle height between 435mm and 635mm.

Please note that our products may only be used in the amateur sector under normal conditions.

Storage & transport

When storing or transporting tune components for a longer period of time, follow these guidelines:

  • Components must be stored and transported at a temperature of 15-30°C and max. 70% relative humidity.
  • Components must not be exposed to direct or indirect sunlight. Ideally, storage and transport take place in a dark place or covered.
  • Avoid large temperature fluctuations, e.g. in a car parked in the sun. Torques must be checked again after storage or transport with large temperature differences to ensure proper function.
  • Components must be cleaned and checked for proper function before storage. Before the next operation, a new check for functionality must be carried out.
  • Wheels should be stored and transported with the tyres fitted. The mounted tyre reduces the spoke tension and thus the load on the hub flange.
  • Do not hang up carbon rims or entire bicycles, as the point load can cause permanent damage to the rim.
  • Do not hang up stored bicycles by the saddle to reduce the load on the saddle and seat post.

Maintenance & care

Depending on the conditions of use and the frequency of use, your tune components must be cared for and maintained in order to preserve their function and appearance for a long time.

You can find out more about how to care for your components here:

Here you will find information on the mandatory maintenance intervals:

Warranty & Crash Replacement

We offer a voluntary warranty on our products to protect against material or workmanship defects. For self-inflicted defects, we offer a Crash Replacement program to get you back on your bike as quickly as possible.

Here you can find out everything about our warranty:

Here you can find information about the Crash Replacement program:

Disposal & recycling

After a defect or after the service life has been exceeded, waste must be disposed of properly. Waste is a valuable raw material and correct disposal protects the environment.

Here you can find out more about the disposal of various materials:

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