Frequently Asked Questions


Is our PORTEUR compatible with other stems?

Yes, it is.
But please note that mounting the PORTEUR affects the static of the stem.
So we can only guarantee a perfect function in combination with our stem “Geiles Teil 4.0 Oversize”

Porteur Zeichnung


Bar Ends

Can I mount the Tune Barends (Hörnchen/RH1) on a carbon handlebar?

Principally it is allowed. The handlebar should be released for a barend assembly. The Tune RH1 should not be mounted in case the handlebar producer prohibits it specifically.

Bottom Bracktes

Is it possible to adjust a Tune bottom bracket to another bottom bracket cup width?

Yes, it is possible. Together with the according distances which get mounted in the bottom bracket, the AC 38 (square bottom bracket) and the Sixpack (hexagon bottom bracket) can be rebuild. For BSA (1,37”x24) there are the following possibilities: 68mm; 68mm/E-Type; 73mm/E-Type. For a width of 73mm, the shaft should be at least 110mm, for 73mm/E-type at least 117mm.

Crank Sets & Accessories

How can the chain line be measured at the crank?

Measure the distance between the middle of the seat post and

-middle of the chain ring

-middle of the both chain rings (when using two)

-middle of the middle chain ring (when using three)

What is the correct axle length for a optimal chain line?

Road bike 2-speed: 105mm (43,5mm chain line)
MTB 3-speed: 117mm (50mm chain line)
MTB 2-speed: 110mm (49mm chain line)
!!!Those chain lines are not suitable for all frames as the chain rings might contact the frame!!!

Rohloff MTB: 113mm (54mm chain line)
Fully-MTB, 3-fach (z.B. Scott, Liteville): 120mm (52mm chain line)
The chain line might vary minimal as the crank can be clamped conical.

What is the Q-factor for FastFoot cranks?

This is pending on the length of the chosen spline and of the crank type (road bike or MTB). Road bike crank with 105mm spline: MTB crank with 117mm spline.

With which bottom bracket standards are the Tune SMART FOOT & BLACK FOOT crank sets compatible?

Our crank sets are compatible with most bike frames. We offer different bottom bracket sets which can be bought separately. A overview can be found at the products.


Are Tune chain rings 11-speed compatible?

Yes, all Tune chain rings are 11-speed compatible


With which torque do the brake pads have to be fixed?

The Tune brake pad should be fixed with 5 Nm.

Who can I turn to with technical problems?

Please turn to your local bike dealer.


Which Cannonball-hub works with which Lefty-fork?

How many “clicks” do Tune hubs have?

Tune Hubs have a “27 tooth system”, in which 3 pawls intervene.

My 11 speed hub is larger than indicated. Is that normal?

Each millimetre counts!

shim_sramThere are some tricks necessary to place an 11spd cassette, as the almost 2mm, for which an additional sprocket is necessary, have to come from somewhere. Unfortunately a little longer freewheel  body is in that case not sufficient, as the chain on the smallest sprocket could collide with the frame. Therefore our hubs get built a millimeter larger. That should not affect the assembly into the frame. The rim is placed 0,5mm excentric after a rebuild from a 10spd into 11spd freewheel. Normally that does not disturb. There is an exception with a very limited rear tire freedom. Here it is useful to center the rim again. This is easily possible with our wheels.

Why it is not possible to convert from 135/142mm to BOOST 148mm?

In our opinion, the rebuilt of a conventional hub into a BOOST standard in combination with distances is a “botched-up construction” and is not offered by us. The advantage of a BOOST frame is primarily the stiffness of the wheels. On the one hand we achieve this by raising the flange distance to improve the rear dish and on the other hand by enlarging the bearing spacing of the hub. An extension of the axle stubs leads to torsional weakening of the wheel stiffness and is therefore in our view completely counterproductive.

The BOOST standard is on the technical point of view a really good development, that we can confirm. It´s worth the investment but you shouldn´t save costs regarding the wheels!


Why148mm hub-spacing and not 150mm?

The reason for 148mm is the Q-factor.  150mm width requires an increased Q-factor, this is the reason for 148mm. The Q-factor of 135mm and 142 did not change therby. Due to the increase of the width from 142mm to 148mm, the position of the cassette changed, what led to a change of the chain line consequence. In order to achieve the same shifting performance, BOOST compatible cranks are needed. For cranks with spiders an adequate chainring or boost spider is needed. The position of the chainring moves 3mm outwards equally as the cassette. The Q-factor as well as the crank- and bearing width remain the same. Tune offers already the Black Foot and Smart Foot cranks as Boost version, here we use absoluteBlack chainrings.


Surely some of you wonder why the hub producer did not adapted 150mm hubs. A reduction of the distances is not possible, that is why we have designed our own BOOST hubs. The efforts have been worth it 😉


Welchen Freilauf für welchen 11-fach Antrieb?

Neue Shimano 11-fach MTB Gruppen (XTR, XT, etc.) können auf normalen 10-fach Freilaufkörpern montiert werden, während 11-fach Road Gruppen (Dura-Ace, Ultegra, etc.) einen speziellen, breiteren Freilaufkörper erfordern. Durch den breiteren Freilaufkörper wird die Laufradsteifigkeit negativ beeinflusst, weshalb wir bei MTB Laufradsätzen weiterhin den 10-fach Freilaufkörper verbauen.
Sollten Sie auf Ihrem MTB Laufradsatz eine 11-fach Straßenkassette montieren wollen, kann auf Wunsch aber auch ein 11-fach Freilaufkörper montiert werden. Dies muss bei der Bestellung jdeoch unbedingt angegeben werden!

First aid when cracking noise occurs


Unfortunately we had in the past some problems with noisy  hubs (15mm hub version, red freewheel) wherefore the hubs have always been described as the cause. The source of the annoying noise is in most instances not the hub. By means of simple tools you can check at home where the noise comes from and thereby saving time, effort and costs. Very often it is not coming from the rear hub but results from somewhere else at the bike. The hollow spaces your bike has work as a resonance body (especially at carbon frames) and it is therefore very difficult to determine only acoustically which component is responsible for the unwanted noise. To remove the cracking noise you need to determine its source. Please try out therefore the following steps:

It is up to the rear wheel?

Please check if the crackle comes from the rear wheel. Therefore exchange your actual rear wheel – if possible – with another rear wheel. Then find out while a test drive with different load scenarios (e.g. weighing ride, uphill, curves) if it is the rear wheel. In case the cracking noise is still there it does not come from the rear wheel.

As an alternative you can mount the rear wheel including the tune hub onto another bike (e.g. of a friend) and then make a test drive.

Or is it the quick release?

Exchange the quick release or thru-axle skewer. The noise results very often from the quick release. Bad clamping force, defect quick release etc. might be the problem. In case the you don´t hear any noise with another quick release, please check the quick release. The quick release should be in perfect and clean condition and tightened properly.

Is it really the hub?

In case you have recognized that the cracking noise results from the rear wheel it might be coming from the cassette, rim, nipples or spokes.

Please check the spoke tension. Please press always with one hand, one side two spoke pairs together, they should not yield a lot. The spoke tension should be constant all around the wheel.

To determine if the spoke crossings are the source of the noise please stick a thin piece of cardboard for test purposes between the spoke crossings. In case the crackle disappears during the test drive, it is up to the spoke crossing.

It can also be the cassette (especially with SRAM XD cassettes with bolts). Please mount an alternative cassette for a test drive. In case you do not have any other cassettes for testing please take it off and clean carefuly the freewheel and the cassette. At the end, you can remount the cassette with the indicated torque value.


Should you notice at the end of the test that the cracking noise comes from the rear hub than please contact our service (, we will help you along.

In which widths are Tune Fat Hubs available?

The Fat King front hub is available in 135mm (quickrelease) and 177mm (thru-axle).

The Fat Kong rear hub is available in 170mm (quickrelease), 177mm (thru-axle), 190mm (quickrelease) and 197mm (thru-axle).

Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.

How and how often do I need to maintain my hub?

The maintenance of the hubs should be once a year. With regular use under extreme conditions (rain, mud, salted winter roads, transport in the rain) the hub should be maintained in shorter intervals. A regular maintenance of the hub ensures a long durability and optimal technical conditions.

What implies a regular maintenance?

The hub should be cleaned carefully in the assembled condition with removed cassette and disc brake and then examined carefully visual and functionaly.

When dismantled the bearings should be examined and the toothing system should be cleaned and regreased. Following up you find a maintenance manual in detail.

You can maintain your tune hub on your own, a maintenance manual can be found under Manuals.

With which torque, do I need to mount my brake disc?

The brake disc needs to be mounted with a torque of 4-5 Nm.

Eventual screw lock rests need to be removed before anew assembly.

Can I mount an 11-speed cassette on a 10-speed freewheel?

On a Shimano/Sram 10-speed freewheel you cannot assemble an 11-speed road bike cassette as it is 1,8mm to wide.

11-speed MTB cassettes are as wide as 10-speed cassettes. They can be used on a 10-speed Shimano/Sram freewheel.

By adding a 1,8mm Spacer, 10-speed road bike cassettes can be used on 11-speed Shimano/Sram freewheel.



How can I recognize an 11-speed freewheel?

The Shimano/Sram 11-speed freewheel is recognizable due to a groove (see illustration). The freewheel width of the Shimano/Sram roadbike freewheel is for Shimano/Sram 11-speed road bike cassettes designed. With a 1,8mm shim ring 8-/9-/10 -peed road bike cassettes as well as 8-/9-/10-speed MTB cassettes can be mounted.



Is it possible to convert the KONG (or PRINCE) to a X-12 system?

It is possible with hubs produced after 2009. The axle (including distances) has to be changed. Together with the adjusting washers, the axial bearing play has to be adjusted. A X-12 hub together with another axle can always be converted to a normal quick release system.

How can I adjust the axial bearing play of my hub?

It is important that there is only a little axial play in clamped conditions! A to high axial preload can damage the ball bearings. A little space increases the durability of the ball bearings significant.

Axial play might have the following main reasons:

  • One ore several ball bearings are abraded >damaged ball bearings must be replaced
  • The ball bearings have damaged the axle > the axle must be replaced
  • The axial preload onto the ball bearings is to low > the axial bearing play must be adjusted:

The adjustment can be made – depending on the type of hub – with the right adjusting nut

  • Hubs with red freewheel and aluminium axle
  • With an adjusting washer which are lying under the right distance
  • Hub has no spot for the allen key
  • Hubs with red free wheel and carbon axle
  • Hubs with blue free wheel

Not suitable for hubs which have been produced before 2004

!!!! Attention, please have a look into the user manual of the concerned hub!!!

Is it possible to change the width of Tune rear hubs (130mm>135mm; 135mm

Yes it is possible.

The hubs can be converted with our conversion kits.

Is it possible to modify the loudness Tune freewheels?

The loudness is a typical property of Tune hubs.

It is possible to reduce the loudness at short-term by adding more grease into the interlocking.

Thereby the strike of the pawl onto the interlocking gets dampened.

A doubling of the pawl spring (two pawl springs are placed on top of each other) makes the hub louder as the pawls get pressed with more pressure in the interlocking.

The use of two pawl springs leads to a higher abrasion of the freewheel and of the pawls.

Is it a problem if the freewheel has grooves from the sprockets at the bridge?

Single sprockets always eat through the bridge of the freewheel due to the lower surface hardness  of the aluminum freewheel towards the steel or titanium sprockets. This is normally not a problem, as the material gets compressed at that spot and the movement stops.

You can remove the sprockets the easiest with two drivers, while turning it into the opposite directions of the load. Protruding burrs should be removed with a file so that the cassette sprockets can be mounted.

What can I do in case the sprocket cannot be removed from the freewheel after the head lock nut has been removed?

It is possible that single sprockets eat through the bridge of the freewheel body in the direction of loading.

The sprockets are the easiest detachable with the help of two chain whips, whereby the through eated sprocket needed to be turned contrary to the direction of loading.

Remove edges and ridges with a file and mount again the cassette sprocket.

It is possible to replace my carbon axle with an aluminium axle?

Yes this is no problem. You need to replace the whole axle and both distances.

Is it possible to exchange the XOT double bearing of my older hub with a single bearings?

Yes, when the hub has an aluminium axle, the XOT bearing can be exchanged with one 61802 (15x24x5mm) and one 61902 (15x28x7mm) bearing. You need to insert a thin adjusting washer  (0,2mm) between both bearings. In case the hub has a carbon axle XOT bearings have to be used.

Wie stelle ich das axiale Lagerspiel meiner Nabe ein?

Entscheidend ist, dass nur wenig axiales Spiel im eingebauten (geklemmten) Zustand vorhanden ist!

Eine zu hohe axiale Vorspannung kann die Kugellager schädigen, eine wenig „Luft“ erhöht die Lebensdauer der Kugellager entscheidend.


Axiales Spiel kann hauptsächlich folgende Gründe haben:

-ein oder mehrere Kugellager sind verschlissen

>defekte Kugellager müssen ersetzt werden

-die Kugellager sind auf der Achse eingelaufen

>die Achse muss ersetzt werden

-die axiale Vorspannung auf die Kugellager ist zu gering

>das axiale Lagerspiel muss reguliert werden:

Die Regulierung geschieht je nach Nabentyp entweder

-mittels der rechtsseitigen Einstellmutter

>Naben mit rotem Freilauf und Aluminium Achse

-mittels Passscheiben, die sich unter der rechtsseitigen Distanz befinden

>Nabe hat keine Inbusaufnahme in der Achse

>Naben mit rotem Freilauf und Karbon Achse

>Naben mit blauem Freilauf

Naben, die vor 2004 produziert wurden, weichen davon ab.

!!!Bitte beachten Sie dazu auf jeden Fall die Gebrauchsanleitung der entsprechenden Nabe!!!

Is it possible to maintain or exchange bearings?

Only industrial ball bearings are used in our hubs, which cannot be regreased. In case a bearing is completely abraded it needs to be exchanged.

Are old Tune hubs compatible with Campagnolo 11-speed freewheel bodys?

Yes this is possible, but must be tried individually. If you have problems please change the freewheel body.

Is it possible to convert my front hub to QR15?

All disc front hubs, built since 2009, can be converted to QR15 with a special conversion kits. The hub cannot be rebuild in case there is a spot for the allen key on the axle.

Can my hub be rebuilt to another axle- or free wheel standard?

Tune hubs get steadily developed and therefore details change over time. The colour of the free wheel has been changed during bigger changes, therefore the colour of the free wheel is important for the recognition of the hub. The axle or free wheel standard might be changed with appropriate conversion kits.

Options for disc brake hubs (Kong / Prince)
freewheel body colour: red blue
Shimano/SRAM 10-speed X X
Shimano/SRAM 11-speed X
Campagnolo X X
Sram XD
Schnellspanner (135 mm) X X
X12 (142×12) X X
Maxle (135×12) X X


Options for rim brake hubs (Mag)
freewheel body colour: red blue
Shimano/SRAM 10-speed
Shimano/SRAM 11-speed X
Campagnolo X X
quickrelease buld in width 130mm X X
quickrelease buld in width 135mm X X


How can I see how old my rear hub is?

You can determine more or less the age of the hub on the basis of the colour of the freewheel body.

  • Blue – delivery since 2011
  • Red- delivery between 2004-2011 (except Kong MK with 150x12mm)
  • Green or grey – delivery before 2004

One Shot Tire Sealant

How can I remove the ONE SHOT out of the tire and dispose of it afterwards?

ONE SHOT is biodegradable and can be removed completely and easily with the help of warm water, some soap and a brush.

Is it possible to use ONE SHOT under -10°C?

We specify  -10°C / 14°F  as the coldest application temperature for the ONE SHOT sealant. Our sealant is functional up to this limit. ONE SHOT is even applicable up to -17°C / 1°F, but here the sealing period might stall due to the increase in viscosity.

Can I use CO2 cartridges?


Our sealant can be used with CO2 cartridges.

How much do I use in a racing tire?

It is not easy to estimate the exact quantity of sealant needed for a racing tires. Too much of the sealant means extra weight, too little of the sealant might not seal. We recommend therefore to work around to the required amount. The amount may vary considerably according to the tire size and model.

Is it possible to use the sealant in latex tubes?

Yes it is possible to use the sealant in latex tubes, also with tubular tires..

Is it possible to use the sealant in road bike tubular tires?

Yes it is possible to use the sealant in road bike tubular tires. It is also no problem for tubular tires with latex tubes.


Is it possible to shorten too long quickrelease axles?

Too long axles might be shortend. But the warranty for the axle and the female thread will then be voided. But the guarantee for the tensile strength remains valid. In case the thread needs to be shorten, then please deburr the end of the axle subsequently. The nut then can be unscrewed easily without grating.

Attention: Please do NOT shorten U20 quickrelease axles!

Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.

Are the Tune MTB quickreleases released for disc brakes and suspension forks?

Yes all Tune MTB quickreleases can be used with disc brakes and suspension forks.

Why does my Tune time trail skewer does not build up any tension?

Most probably the dropout is too narrow so that the skewer axle is not supported at the dropout but at the hub axle. The dropout width must be wider than 7mm and the axle end piece of the hub must be at least 1,5mm shorter than the drop out of the frame or the width of the fork.

Why there are no spiral springs delivered together with DC-quickreleases?

The springs can negatively influence the clamping force of the quickrelease.

What can I do in case the clamping force of my quickrelease is too low?

As a rule the quickrelease is not strengthened sufficiently. It is necessary to use a higher operational force to close Tune quickreleases compared to other quickreleases. Please close the quickrelease by screwing on the nut to the stop, close then the quickrelease and open it again and then tighten the nut once again. Please close the quickrelease and position the lever next to the frame or fork. Don´t be afraid to damage the quickrelease. Due to its construction, the quickrelease withstands the force.


Is it possible to re-cover the Speedneedle and what are the costs for it?

Yes it is possible. Please refer directly to Tune (Germany) or to the responsible distributor (outside of Germany).

Are there any weight restriction for the saddles?

For all the saddles there is a weight restriction of 90kg.

Are the Tune saddles compatible with my seat-post?

Principally there are no restrictions except that the seat-post producer prohibits the mounting of carbon saddles.

The saddle rails of Tune saddles are high-oval, problems may occour with lateral clamp rings. Special clamp rings are very often offered. You can find more information in our product descriptions.

With which torque is my Tune saddle fixed to the seat-post?

Due to the different clamping mechanisms it is not possible to specify an exact value. The torque is prescribed on behalf of the producer and needs to be respected.


Is it possible to shorten the seat-post?

Yes, the Starke Stück can be shortend. But please note, changes not made by Tune, render the warranty void. Due to safety reasons it is not allowed to shorten the Schwarze Stück.


Which clamping method does Tune offer?

Nearly all Tune hubs are suitable for quickrelease or thru-axle systems. You can choose the clampig method, even after purchase a rebuilding with a conversion kit is possible.


Welche Bremsbeläge für Tune Aluminiumfelgen?

Tune Alu-Laufräder können mit allen Bremsbelägen für Aluminiumfelgen verwendet werden.

Wir empfehlen SwissStop FLASH PRO BXP Bremsbeläge für otimale Bremsleistungen.

Which brake pads for Tune aluminium rims?

Tune aluminium wheelsets can be used with all brake pads for aluminium rims.

We recommend the use of SwissStop FLASH PRO BXP brake pads for a optimal brake performance.

Can the labels on the Schwarzbrenner-rim be removed?

The discreet stealth-desing is integrated in the top layer of the rim and therefore can not be removed.


Where is the advantage of an asymmetric (offset) rim?

Well, it’s all about equalising spoke tension.

By offsetting the rim, the nipple holes are placed more directly in line with the centre of the hub, which allows a more even spoke length, and therefore tension of spokes between both sides of the wheel.

(It also improves the bracing angle of a dished wheel)

This is one of the reasons wheels are cross-laced.


The rim asymmetry enables an entire wheelset to be built, with almost uniform spoke tension.

This results in a stiffer and more stable wheelset, which is under less strain ( similar to the Evo boost idea).


Which rims are tubeless suited?

All our clincher rims can be converted with a tape, tubeless valve and sealant to tubeless rims.