Aluminum
Enduro

The COAL with 29" wheels and 160 mm travel is progressive and gives you control at all times. The geometry is downhill-oriented and thanks to size-specific optimisation, the kinematics and riding position are very efficient. Optional as MX version with 27.5" rear wheel. Everything on the COAL is designed for demanding enduro use - race ready!
COAL
COAL
COAL
COAL
COAL
COAL

"The Coal has become more powerful with each generation. 29", a lot of suspension travel and our very sophisticated geometry make the COAL extremely fast. For the new frame we have optimized all tube cross sections and wall thicknesses. The milled parts are elaborately hollow and form closed cross sections with the adjacent tubes, so that the frame achieves high strength at a weight of only 2.9 kg."

Jochen Forstmann

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Complete Bike

from 3,919.00 EUR

HIGH KOMPLETTAD

from 3,799.00 EUR

BASE KOMPLETTRAD

from 2,899.00 EUR

Frameset

from 999.00 EUR

Geometry

The geometry of the COAL is perfect for demanding enduro tracks, racing and bike parks. The steering angle of 64 degrees gives a lot of safety and control in difficult terrain. We deliberately chose a moderate bottom bracket height, so that a good compromise between positioning "in the bike" and sufficient ground clearance is achieved. For the COAL 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 428 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. 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.
Geometrie
Frame Size 155 165 175 185 195
Suggested Rider Height 1.55 M 1.65 M 1.75 M 1.85 M 1.95 M
Reach 400 429 454 485 518
Stack 622 622 631 640 649
Head Angle 64° 64° 64° 64° 64°
Seat Angle (effective) 76° 76° 76° 76,2° 76,4°
Seat Angle (actual) 65,5° 66,9° 68,1° 69,9° 71,2°
Seat Tube Length 385 385 415 455 510
Chainstay 428 430 432 438 444
Headtube 95 95 110 120 130
BB Drop (to Front Axle) -32 -32 -27 -27 -27
Wheelbase 1184 1194 1227 1268 1313
Fork + Headset 581 + 1 581 + 1 581 + 1 581 + 1 581 + 1
Toptube (horizontal) 555 584 611 642 675

Specifications

Frame
LAST COAL V3
Sizes
155, 165, 175, 185, 195
Travel
160 mm
max. Fork travel
180 mm (V01.1) | for previous version V01 the max. fork travel is 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-Factor
min. Q-168
Chain guide tabs
ISCG 05 via Adapter
Seat tube
31,6 mm, min. 130 mm Einstecktiefe
Seat clamp
34,9 mm
Shock Size
205 x 65 mm Trunnion
Compatible shocks
Rock Shox, Fox - every other shock must be test assambled and checked for free running and to be collision free by a skilled technican
Bottle Cage
yes, for size 155 and 165 you will need ti use a shock without piggyback
Hardware bottom
22,2 x 8,0 mm
Lager
Enduro Bearings Max Type, full complement, stainless steel, seeled deep grove ball bearings, dimension 28x15x7 mm, Trunnion bearings 22x10x6 mm in black oxid
Max. sprocket
34T (52 mm chainline)
Rear axle
Through Axle 12 mm, M12x1, X12 compatibel
Rear spacing
148 mm
Brake mount
Postmount 180, max. 203 mm discs
Front derailleur
not possible, only one by drive train
Derailleur hanger
Sram UDH (Universal Derailleur-Hanger) | compatible to Sram T-Type drivetrain (V01.1) | the rear triangle of version V01 with external gear house is not compatible to Sram T-Type drivetrain
Tires
29" to 2,5" width (depends on tire/rim combination)
Frame weight
2,9 kg
Complete bike weight
from 12,6 kg
Suspension System

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 COAL shows 28% progression from the SAG point to the end of the travel and is equally suitable for air and steel spring shocks. We have changed the calculation method to achieve better comparability. According to the previous calculation method, the progression is 41% from SAG to bottom out.
Anti Squat

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.
Anti Rise

Anti-Rise

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 COAL are practically congruent, shown in blue.

Geometry

The geometry of the COAL is perfect for demanding enduro tracks, racing and bike parks. The steering angle of 64 degrees gives a lot of safety and control in difficult terrain. We deliberately chose a moderate bottom bracket height, so that a good compromise between positioning "in the bike" and sufficient ground clearance is achieved. For the COAL 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 428 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. 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.
Geometrie

155 Frame Size

Suggested Rider Height
1.55 M
Reach
400
Stack
622
Head Angle
64°
Seat Angle (effective)
76°
Seat Angle (actual)
65,5°
Seat Tube Length
385
Chainstay
428
Headtube
95
BB Drop (to Front Axle)
-32
Wheelbase
1184
Fork + Headset
581+1
Toptube (horizontal)
555

165 Frame Size

Suggested Rider Height
1.65 M
Reach
429
Stack
622
Head Angle
64°
Seat Angle (effective)
76°
Seat Angle (actual)
66.9°
Seat Tube Length
385
Chainstay
430
Headtube
95
BB Drop (to Front Axle)
-32
Wheelbase
1194
Fork + Headset
581+1
Toptube (horizontal)
584

175 Frame Size

Suggested Rider Height
1.75 M
Reach
454
Stack
631
Head Angle
64°
Seat Angle (effective)
76°
Seat Angle (actual)
68,1°
Seat Tube Length
415
Chainstay
432
Headtube
110
BB Drop (to Front Axle)
-27
Wheelbase
1218
Fork + Headset
581+1
Toptube (horizontal)
611

185 Frame Size

Suggested Rider Height
1.85 M
Reach
485
Stack
640
Head Angle
64°
Seat Angle (effective)
76,2°
Seat Angle (actual)
69,9°
Seat Tube Length
455
Chainstay
438
Headtube
120
BB Drop (to Front Axle)
-27
Wheelbase
1268
Fork + Headset
581+1
Toptube (horizontal)
642

195 Frame Size

Suggested Rider Height
1.95 M
Reach
518
Stack
649
Head Angle
64°
Seat Angle (effective)
76,4°
Seat Angle (actual)
72,1°
Seat Tube Length
510
Chainstay
444
Headtube
130
BB Drop (to Front Axle)
-27
Wheelbase
1313
Fork + Headset
581+1
Toptube (horizontal)
675

Specifications

Frame
LAST COAL V3
Sizes
155, 165, 175, 185, 195
Travel
160 mm
max. Fork travel
180 mm (V01.1) | for previous version V01 the max. forl travel is 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-Factor
min. Q-168
Chain guide tabs
ISCG 05 via Adapter
Seat tube
31,6 mm, min. 130 mm insert
Seat clamp
34,9 mm
Shock Size
205 x 65 mm Trunnion
Compatible shocks
Rock Shox, Fox - every other shock must be test assambled and checked for free running and to be collision free by a skilled technican
Bottle Cage
yes, for size Größe 155 and 165 you will need to use a shock without piggyback
Hardware bottom
22,2 x 8,0 mm
Bearings
Enduro Bearings Max Type, full complement, stainless steel, seeled deep grove ball bearings, dimension 28x15x7 mm, Trunnion bearings 22x10x6 mm in black oxid
Max. sprocket
34T (52 mm chainline)
Rear axle
Through Axle 12 mm, M12x1, X12 compatibel
Rear spacing
148 mm
Brake mount
Postmount 180, max. 203 mm discs
Front derailleur
not possible, only one by drive train
Derailleur hanger
Sram UDH (Universal Derailleur-Hanger) | compatible to Sram T-Type drivetrain (V01.1) | the rear triangle of version V01 with external gear house is not compatible to Sram T-Type drivetrain
Tires
29" to 2,5" width (depends on tire/rim combination)
Frame weight
2,9 kg
Complete bike weight
ab 12,6 kg

Progressive Suspension System

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 COAL shows 28% progression from the SAG point to the end of the travel and is equally suitable for air and steel spring shocks. We have changed the calculation method to achieve better comparability. According to the previous calculation method, the progression is 41% from SAG to bottom out.

Size-specific Anti-Squat

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.

Anti-Rise

Anti Rise 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 COAL are practically congruent, shown in blue.

Features

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.