The trail bike GLEN is based on our new frame platform. The many improved details and the contemporary geometry are inspiring uphill and downhill. The GLEN offers a lot of feedback and is especially fun on home trails. It is agile and playful and has the same robustness and stiffness as the downhill-oriented COAL.





"With the new generation we present our most versatile aluminium frames. The GLEN now has slightly more suspension travel at 145 mm and we have further refined the geometry - with the seat position closer to the front the new GLEN climbs excellent and we were able to adapt the bike even better to different body sizes. The progressive kinematics perform LAST typical efficiently. The GLEN is easy to throw through turns and the smallest features get you airborne."


- Jochen Forstmann | LAST





The size-specific geometry of the GLEN integrates you perfectly into the bike - new is size 155.

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The suspension system is sensible and offers a mid stroke support, making playful riding easy.

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The GLEN is a trail bike with a very versatile range of use - bike park ready inclusive crash replacement. 

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Bearings of best quality and precise 5-axis CNC machining means Total Bearing Quality.

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The GLEN is robust and durable. The frame details guarantee maximum reliability and versatile solutions.

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Each Glen is customized according to your wishes in our manufactory in Dortmund.

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Configure Your Complete Bike Or Frameset




GLEN Custom  from 3299 €

GLEN Frame  from 1799 €

GLEN CUSTOM - Komplettbike GLEN - Rahmenset






The GLEN is a very agile trail bike with a 65 degree steering angle and a 77 degree seat angle. The seating position on the GLEN is shifted about 10 mm forward compared to the COAL. However, this increase in reach does not lead to greater stretching, as the top tube length is practically the same. The stack is about 8 mm lower and gives the sportier impression that you can feel in direct comparison. To give a starting point for the size selection, we named the sizes according to prototypical body height of riders: 155, 165, 175, 185 and 195.



Geometry Optimization Of The Frame Sizes 

For GLEN we adjusted the chainstay length, seat angle, bottom bracket height and head tube length to suit the size of the bike. The chainstay length of size 155 is a short 427 mm and increases gradually up to 444 mm for size 195. For the larger sizes we adjusted the seat tube a little steeper to get more pressure on the front wheel. The short seat tubes and the full retractability of the seat post give every rider the choice between several sizes - depending on their preference for a longer or shorter bike. The sizes 155 and 165 offer a 5 mm lower bottom bracket, as we recommend shorter 170 mm cranks due to the pedalling ergonomics. Together with the short seat tube and the very compact chain stays, this results in an exceptionally agile 29er or MX for small riders.




Progressive Suspension System



For almost 20 years we have been using very progressive suspension designs. Even today, for steel spring dampers, progressive kinematics is still the best option to realize sensitivity, support and bottom out protection. Shocks with air springs benefit when the excessive use of volume spacers can be avoided. Likewise, the forces introduced into the frame and the bearings via the damper are reduced when the transmission ratio decreases towards the end of the spring travel. This allows for a lighter design and less stress on the bearings. The GLEN shows 41% progression from the SAG point to the end of the travel and is equally suitable for air and steel spring shocks.




Size-Specific Anti-Squat

In order to generate the best possible pedalling efficiency for each frame size, the kinematics are optimised to minimise the differences between the anti-squat curves. The graphs below show in blue the course of the anti-squat value for the five frame sizes in dependence of the gear engaged. This complex design is particularly advantageous for small and large riders, as their low resp. high center of gravity would otherwise be far from optimum.





The Anti-Rise value determines how the suspension behaves when braking. A value around 100% is considered the optimum, as the suspension then behaves neutrally. This means that the braking has no disturbing influence on the suspension system. Due to the size-specific optimization of the pivot point position, all five values of the GLEN are practically congruent, shown in blue. 





Wide Range Of Use 



Our GLEN is an efficient and versatile trail bike - perfect for your home trails and ambitious multi-day tours. With 150 mm suspension travel at the front and 145 mm at the rear, it offers you sufficient reserves and great feedback. The complex adapted geometry generates best uphill characteristics, gives you a lot of control and widens the limit. The GLEN is playful, precise and agil. The 29 inch wheels provide optimal rollover resistance and make the bike fast.

At the same time, the bigger wheels and thus higher front axle help to avoid rollovers on steep slopes and unexpected obstacles. In relation to the axles, the bottom bracket of the 29” frames sits lower and provides the biker with a good stand on the bike.


The GLEN is reliable and robust - it is based on the same frame as our COAL. You can ride at bike parks or use it in racing - depnding on the choice of the right wheel options and attachment parts. In addition to our warranty for defective material or craftsmanship, we offer a crash replacement program for the first 3 years which is not limited to the first owner.







Total Bearing Quality 



With the term Total Bearing Quality we describe everything that is necessary to achieve a high quality and durable bearing. In addition to the bearings as such, this includes the bearing seats, the alignment of the bearing seats to each other, the mounting and protection against dirt.



  • Stainless steel full complement bearings allow for better load carrying capacity and increase the radial stiffness while increasing corrosion protection. Manufactured by Endurobearings.
  • The machining of all bearing seats on the frame with a high-precision 5-axis milling machine in Germany allows for the most precise diameter, shape and position tolerances, so that components are not stressed during assembly and operation.
  • All contact surfaces and the threads for the bearing bolts are also milled in one go on the 5-axis machine.




Frame Design And Details 




Frame Material and Treatment 

The frame is hand-welded from 6011 aluminium alloy tubes using the TIG process and then heat treated. 6011 is far superior to many other alloys in terms of fatigue strength, especially when the labor intensive smooth-welding process is used. The combination of cross sections and wall thicknesses designed to withstand loads results in a frame with particularly high design strength. The new generation uses a slightly larger down tube for more stiffness, as well as slightly rounder profiles on the rear end. The dropouts are hollow milled to avoid pockets where mud can accumulate. The even more complex CNC machining of the frame contributes to a frame weight of 2.9 kg.



Internal Cable Routing

The cables run in the front end, foam covers prevent rattling. The transition to the rear end is close to the pivot point to reduce flexural loads. On the chain stay the cable runs under the chain stay guard. The available installation space is taken up for tire and chainring clearance instead of making the milled part wide enough for a drill channel.




MX Option

On the MX version, the GLEN use a 27.5 inch rear wheel, combining the advantages of 29 inch and 27.5 inch in one bike. The large front wheel has good rollover characteristics and the smaller rear wheel offers greater stiffness and more room to move. The seat can be lowered without the tire touching it during full compression. This allows smaller riders to use seat posts with more travel. The MX Link, which is slightly longer than the standard link, compensates for the smaller wheel diameter, leaving the geometry virtually unchanged. This way you can make perfect use of all advantages without compromising.



Universal Derailleur Hanger

We now use the Universal Derailleur Hanger by Sram for all our bikes which allows the installation of a normal rear derailleur - no matter which manufacturer. This is a great advantage since not only we use it – many bicycle shops will also stock this derailleur hanger, so it is always readily available – no matter where you are. From a technical point of view, it is nice to see that the thread for the axle is placed inside the derailleur hanger and in case of wear or defect can simply be replaced by a new derailleur hanger.



ISCG And BSA Bottom Bracket

If required, an ISCG mount can be mounted on the bottom bracket to attach chain guides or bash guards. The adapter is clamped to the bottom bracket when it is screwed into the BSA thread.



Mounting Hardware

On the GLEN the lower and upper mounting hardware is made of titanium and has a dark PVD coating. The new titanium hardware is compatible with all predecessing COAL, CLAY and GLEN models.



Color Optiones and Custom Colors

GLEN is available in untreated aluminum - raw. This version is neither anodized nor does it feature clear varnish. So the frame can be re-polished at any time. There is also a very robust black anodized version and a transparent blue powder coating. Thanks to our cooperation with 70ID, we can also realize individual color requests.

The frame stickers are available in different color variations.If you want to individualize your bike you can download the vector data. Click here to download.



The Frame Platform

The GLEN is based on the same frame as our COAL. Both bikes vary by only 15 mm travel at the rear and 20 mm at the front. When riding, the more direct, playful GLEN and the plusher COAL differ more than this small difference in rear travel would initially suggest. Based on the front and rear of the platform, the damper installation length and the rocker arm are varied depending on the model. The MX option is realized by a longer link and the original geometry is untouched. So the frame offers maximum flexibility, whether temporarily for a day at the bike park or permanently.




Frame Specifikation


Sizes 155, 165, 175, 185, 195
Travel 145 mm 
Fork travel max. recommended 150 mm, max. 170 mm
colors black anodized, raw, transparent blue powder couted, custom
Materials Aluminum 6011 T6 Frame and 7075 T6 milled parts
Head tube IS41, IS52
Bottom bracket BSA, 73 mm
Q-Faktor mind. Q-168
Chain guide tabs ISCG 05 via. Adapter
Seat tube 31,6 mm, min. 130 mm minimum insert
Seat clamp 34,9 mm
Shock size 210 x 55 mm 
Compatible shocks Rock Shox, Fox - every other shock must be test assembled and checked for free running and to be collision free by a skilled technican.
Hardware top 30,0 x 8,0 mm
Hardware bottom 22,2 x 8,0 mm
Bearings Enduro Bearings Max Type, full complement, stainless steel, sealed deep groove ball bearings, dimension 28x15x7 mm
Bottle cage yes, for size 155 and 165 you will need to use a shock without piggyback
Max. sprocket 34T (52 mm chainline)
Rear axle Through Axle 12 mm, M12x1, X12 compatible
Rear spacing 148 mm
Brake mount Postmount 180, max. 203 mm discs
Front deraileur not possible, only one by drive train
Derailleur hanger UDH (Universal Derailleur Hanger)
Tires 29" uo to 2,5" width (depends on tire/rim combination)
Frame weight 2,9 kg
Complete bike weight from 12,5 kg


Frame Sets And Complete Bikes


Every GLEN is customized according to your whishes in our manufacture in Dortmund. In addition to frame sets we also offer complete bikes. All complete bikes are individually configured and optimally adjusted. This concerns both the selection of components and the color of the decals. We will gladly advise you by mail, telephone and of course in our showroom.   

GLEN complete bikes are possible from 12,5 kg and prices start at 3299 €.

In addition to the shipping option, customers can pick up their bike from us in Dortmund and have it perfectly adjusted to their needs during a guided tour. 

The GLEN is available as individual custom built or as a frameset. It can be ordered from now on and will be available from July.

Responsibility and Ecology 



In choosing our partners and suppliers, we attach great importance to good conditions, both in terms of the environment and conditions for employees. That's why we prefer suppliers from free democratic countries. For the COAL and the GLEN, this means: frames are welded and anodized in Taiwan. CNC processing of bearing seats and screw joints is done in Germany. Custom paint jobs are executed in Hagen, Germany. Finally, all frames are assembled, tested and, if desired, assembled into complete bikes in Dortmund.



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GLEN CUSTOM - complete bike

Please get in touch with us to discuss the options and to order the GLEN Custom.

SRAM UDH Derailleur Hanger

14.90 *
In stock or availibility at a certain date.


19.90 *
In stock or availibility at a certain date.
* Prices incl. VAT, plus delivery