For our GLEN MX there is now a new model generation. Direct to the new GLEN: click here! 

We still have a few frames from the GLEN MX in stock - all available sizes and colours can be found under the article "GLEN MX Frame" on this page. 


GLEN MX Beauty



"The GLEN MX with its 29" front and 27.5" rear gives me the perfect mix of stability and agility. The smaller rear wheel offers me more flexibility in steep and technical terrain. Especially for me as a smaller rider it is optimal. Manuals, cutting corners, pulling off and moving the bike on jumps - the GLEN MX runs super playful with lots of grip through the 29" front wheel."

- Betti Lysko | 167cm | LAST Factory Team




MX_Seitenansicht_288x193 MX_Federungssystem_2_288x193 GLEN MX Einsatzbereich

The Glen MX has an optimized geometrie for an 27,5" rear wheel and all known features of the GLEN.

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The progressive suspension system is suitable for air and coil shocks. It is sensible and offers mid stroke support.

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From trail to enduro - the combination of 29" front wheel and 27,5" rear wheel offers maximum control und agility.

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MX_Lagersitze_1_288x193 MX Link MX_Custom_1_288x193

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

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The MX - Link is manufactured in Germany and can be upgraded at the GLEN. The frame is robust and reliable.

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Each GLEN MX is custom-built as a frame kit or complete bike in Dortmund, Germany. Just contact us for mor information.

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GLEN MX verspielt





Configure your Complete Bike or Frame Kit


GLEN MX Custom  

GLEN MX Frame  was 1919 € - now 1519 €

MX_Studio_2_350x233 glen_raw_frame_beauty




The new GLEN MX is based on the successful geometrie of our GLEN with all its advantages: besides our significantly flat head angle we extesively adjusted the geometry to the size of the frame by optimizing the length of the chain stays and the effective seat angle.

The main reason why we use a 29er as a base for the GLEN MX: the geometry values can be better maintained at a constant good level. The MX-Link compensates the smaller wheel diameter at the rear wheel. So bottom braket height, head angle, seat angle, etc. are maintained without significant changes. Because of this it is possible to use the advantages of the small rear wheel.

"In the recent past, several EWS racers have equipped their 27,5" bikes with 29er forks and front wheels and used them successfully in races. The reason was usually that a 29er was not available. To be able to use the advantages of the large front wheel in terms of rollover behavior and grip, the riders were forced to make compromises, which they did - which shows how big the advantages must be. The compromises consisted aof a sharp flattening of head- and seat angle, as well as a higher bottom bracket and a shorter reach. The changes result from the higher axle position of the front wheel axle due to the bigger 29er wheel and the large overall height of 29er forks. They are unavoidable with the same susoension travel of the fork, but this is not a sensible option either." - Jochen Forstmann | Founder and CEO at LAST  

The GLEN MX avoids these disadvantages completely, because it is based on a 29er. In this context it could be called a second generation bike - whith different wheel sizes. 

The advantages of the 27,5" rear wheel are especially useful for smaller riders: the freedom of movement is increased in steep sections for larger jumps, drops and manuals.

Due to the short seat tubes, bikers with long torsos or long arms can choose a frame size bigger than normal. This also works vice versa if a seatpost is used that is long enough. The seat tube is designed in a way that the seat post does not conflict with the bolt of the rocker arm and can be slammed down all the way.

MX Geometry




Suspension and Metric Shocks



Following our well-proven philosophy, the GLEN MX features progressive kinematics. Rocker tuned suspension provides a fine response behavior for little shocks. In the middle part, the kinematics offer a lot of feedback and the spring travel allows for a smooth ride and easy take off at lips. The generously dimensioned progression at the end provides good bottom out protection and reserves. Thanks to the kinematics, the suspension type can be chosen freely – air or steel spring – since the progression comes from the kinematics and not from volume spacers in the air shock. This means that the suspension system remains progressive even with linearly coiled steel springs.

Before using an shock thats not delivered by us it's necessary to compress the shock completely and check for sufficent clearance.




The position of the pivot point on the main frame guarantees high pedaling efficiency. Anti squat and ant rise values that were achieved this way draw the image of a carriage so efficient that it is often unnecessary to use the damper platform.


The generous installation space enables the installation of most dampers – even with piggyback. The rocker arms keep away dangerous shear forces from the damper. For perfect adjustment, the lower damper mount is milled on the completely welded and heat-treated frame using a CNC machining center. The damper is protected against rockfalls by its position in front of the seat tube.


From Trail to Enduro



With 150 mm at the front and 140 mm at the rear, the GLEN MX brings along a suitable suspension travel for all-round use without losing focus on efficiency and playfulness. The 29” wheels provide optimal roll-over 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. Thanks to the MX-Link, the bottom bracket height remains almost unchanged from our 29er GLEN and lets you stand safely in the bike.



The GLEN is certified for ASTM class 4 which normally is put on one level with Enduro. If you want to built an even more potent bike, you can use suspension forks with up to 160 mm of suspension to be used in racing or at bike parks. All wheel options and attachment parts are robust and designed for the expectable loads. 


GLEN MX Action



Total Bearing Quality 



By Total Bearing Quality we mean everything that is necessary for high quality and thus durable bearings. This includes roller bearings, bearing seats, mounting, and protection against dirt.



  • Full-ball type roller bearings improve load rating and stiffness. We use only 28x15x7 bearings that are globally available in cases of need. Our bearings are produced by Enduro Bearings and are made of stainless steel.
  • Machining the frame's bearing seats in one clamping on a highly precise 5-axis milling machine in Germany enables us to adhere to strictest diameter, form, and positional tolerances to avoid tensioning of the components during installation.
  • All contact surfaces and threads for the bearing pins are also milled in one clamping.





Frame Design und Details 



Frame Material and Fabrication

We process the aluminum alloy 6013 which is welded using TIG process. The smooth welding strategy we use is beneficial for the stability and creates notch-free joints.

After that, the frames receive a T4 heat-treatment at 500 degrees Celsius, followed by the straightening in solution annealed condition. To achieve a special vibration endurance of alloy 6013, it is then T6 heat-treated. Eventually, the frame is inspected again and head tube fit and bottom bracket bearing are manufactured.




MX - Link

The MX - Link is manufactured on a 5-axis CNC milling machine from 7075 T6 aluminium and can be upgraded at the GLEN. The produktion in Germany allows us a short supply chain, access to the most modern machining centres and highprecision tool technology.

MX Link



Bottle Cage

A drinking bottle can be fitted to the down tube. Threaded sleeves are welded into the frame which makes them particularly robust. The size of the mountable bottle depends on the size of the frame and the dampers used. For size M it normally is necessary to use a damper without piggyback. Conventional bottle cages position the bottle in a place comparable with that of the fastening threads. Alternative systems, e.g. Fabric or Fidlock, might follow different approaches. We recommend testing the intended combination and making sure that the damper does not make contact with the bottle.

Glen Bottle Cage



Through Axle and Rear Width

The GLEN frame is compatible with 148 mm Boost spacing. Using a different derailleur eye and a special spacer it can be converted to 142 mm hub spacing. Boost and non Boost cranks will fit alike. Q-Factor 168 is required.
The X-12 compatible through axle operates with a nut that is threaded in the drop out. In case you strip the threads they can be replaced by changing this part. The frame is delivered with a DT Swiss RWS through axle. The lever is a plug-in type. If you don´t want to use the lever, pul it out and simply tighten the axle with an allen key.

GLEN Steckachse



Disk Brake Mount

The GLEN features a disk brake mount according to Postmount 180 standard. As in the case of our other frames, the disk brake mount and the fork end are a monolithic milled part. To ensure the precision of the contact surfaces and threads, we machine them in Germany on a 5-axis CNC mill along with the fabrication of the bearing fit.

GLEN CNC Scheibenbremsaufnahme



Bottom Bracket and ISCG Mount

Again we decided for the durable and easy to maintain option, the bolted BSC bottom bracket. The ISCG mount is embedded in the milled bottom bracket and robustly designed. In addition to Chain Guides, crash plates can be installed. There is an optional mounting hole on top.

GLEN ISCG und Tretlager



Headtube and Headset

The head tube houses integrated headsets Type IS41/IS52 and does without press fitting which makes the system easy to maintain. Additionally, the head tube can easily be remilled for integrated headsets. The function surfaces with a slope of less than 45 degrees are machined immediately which is not possible with cylindrical tubes. The Head tube features asymmetrical wall thickness with a good load-bearing capacity.

GLEN Steuerrohr



Cable Routing

Free of narrow bending radiuses and well protected against rockfall, the cable routing sits on the down tube. This improves the shifting performance and allows for a quick and easy replacement of the brake without bleeding it. Cable guides are flexible and can be replaced with other guides if needed, e.g. for the cable of a remote shock remote control. The remote cable of the seat post is completely housed inside the frame.

GLEN Zugverlegung



Colors and Frame Decals

The frame is available in black anodized, Raw, blue, and red. Before the application of the powder coating, the frames are polished. The transparent paints allow the polished metal surface to shine through and add a certain brilliance to the colors. The Raw look is finished with Scotch Brite pads and comes out quite shiny. With time the surface of the Raw frame can get a Patina, but you can easily refurbish the frame with Scotch Brite pads.

Decals are available in different color variations. If you want to personalize your bike, you can download the vector data of the logotype and create your own color design. Click here to download the file.


GLEN Farben und Decals




Frame Specifications


GLEN Exploded

Frame LAST GLEN MX (V01)
Travel 140 mm
Colors black anodized, Raw aluminium brushed, transperent red and blue powder couted
Sizes M, L, XL, XXL
Rider Hight 1,65m ; 1,75m ; 1,85m ; 1,95m
Materials Aluminium 6013 T6 frame and 7075 T6 milled parts
Head Tube IS41, IS52
max. Fork Travel 160 mm
Bottom Bracket BSA, 73 mm
Q-Fakcor min. Q-168
Chain Guide Tabs ISCG 05
Seat Tube 31,6 mm
Seat Clamp 34,9 mm
Shock Size 210 x 55 mm
compatible Shocks Rock Shox, Fox, Cane Creek, DVO, Push 
other Shocks 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 M you will need to use a shock without piggy back
Rear width 148 mm, mit adapters an a different drop out 142 mm is possible
Disc Mount Postmount 180, max. 203 mm discs
Front Derailleur not possible, only one by drive trains
Tires 29" front wheel und 27,5" rear wheel up to 2,6" width (depends on tire/rim combination)
Weight 2,9 kg
Frame Kits and Complete Bikes


We assemble the welded and milled parts in our manufactury in Dortmund, Germany and exercise great care. Each frame is custom-built according to our customers' wishes regarding color, size, decals and shocks.

The Glen MX is available as a frame kit and as a custom bike for which all components from our portfolio can be chosen. We are more than happy to provide you with advice on the telephone and to help you finding the perfect package for you.


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GLEN MX CUSTOM - Complete Bike

The GLEN MX (V01) is no longer produced by us. To the current GLEN MX: click here!

GLEN MX - Frame Set

The GLEN MX (V01) is no longer produced by us. To the current GLEN MX: click here!

* Prices incl. VAT, plus delivery