Table of Contents
Turnstange & Wunderbar
Updated by tune
Manual Turnstange & Wunderbar handlebars
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.
Before you can start with the assembly, the compatibility of the stem and handlebar must be checked:
- 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!
- 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:
- Loosen and remove the front plate of the stem.
- 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.
- Insert the handlebar into the stem and roughly align it.
- Secure the handlebars against slipping by hand-tightening the front plate screws of the stem.
- Tighten the stem clamp according to the manufacturer's specifications within the foreseen clamping zone (rough surface area). Do not exceed the maximum tightening torque of the handlebar!
- Tighten the shift and brake levers according to the manufacturer's specifications. Do not exceed the maximum tightening torque of the handlebar!
- Check the alignment of the handlebars and the shift-brake levers and readjust if necessary.
- Mount grips before your first ride to increase comfort.
Stem clamping screws
Lever clamping screws
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.
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: