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Allied BC40 Framekit

Start your dream mountain bike build with BC40’s frameset. It’s the perfect canvas to create your one-of-a-kind ride with custom components and head-turning custom paint.

  • Carbon frame
  • 120mm rear travel
  • Spec to suit

RACE-DAY LIGHT, PLAY-DATE READY

Inspired by the rocky surfaces, dynamic corners, and punchy climbs of our legendary Back 40 trail, BC40 is a second-to-none, modern XC racing bike with legs to take on much bigger trails. Its lightweight, high-performance carbon frame and progressive geometry deliver fast accelerations and race-day sharpness. Its World Cup talent extends to the 120mm suspension travel that also sets it up as a do-it-all weekend trail sled, delivering uncanny levels of control and confidence beyond its category.

Fork 120mm / 530 Axle to Crown
Front derailleur -
Rear derailleur UDH Compatible
Shift levers -
Cassette -
Chain -
Crankset Boost Chainline
Bottom bracket 73mm Threaded
Brakes Post Mount 160
Handlebar -
Handlebar tape -
Stem -
Saddle -
Seatpost 31.6 or 30.9
Wheelset -
Tires 29x2.4 max

Geometry

For optimal performance and control on fast and technical tracks, BC40 uses a slack head tube angle and a long front-to-center measurement. The result is geometry that positions the rider further behind the front wheel for world-class ride quality and predictable handling, no matter how hard you push it.

All units are in Millimeters or Degrees
SM MD LG XL
a Stack 598 609 622 633
b Reach 420 445 475 501
c Effective top tube 569 596 630 659
d Seat tube length 395 420 450 500
e Head tube length 95 105 120 135
f Head tube angle 66.5° 66.5° 66.5° 66.5°
g Seat tube angle 76° 76° 76° 76°
h Bottom bracket drop 40 40 40 40
i Chainstay length 435 435 435 435
k Wheelbase 1145 1174 1210 1241
m Fork rake 44 44 44 44
n Front center 710 739 778 806
o Wheel size 29 29 29 29

Start your dream mountain bike build with BC40’s frameset. It’s the perfect canvas to create your one-of-a-kind ride with custom components and head-turning custom paint.

  • Carbon frame
  • 120mm rear travel
  • Spec to suit

RACE-DAY LIGHT, PLAY-DATE READY

Inspired by the rocky surfaces, dynamic corners, and punchy climbs of our legendary Back 40 trail, BC40 is a second-to-none, modern XC racing bike with legs to take on much bigger trails. Its lightweight, high-performance carbon frame and progressive geometry deliver fast accelerations and race-day sharpness. Its World Cup talent extends to the 120mm suspension travel that also sets it up as a do-it-all weekend trail sled, delivering uncanny levels of control and confidence beyond its category.

Fork 120mm / 530 Axle to Crown
Front derailleur -
Rear derailleur UDH Compatible
Shift levers -
Cassette -
Chain -
Crankset Boost Chainline
Bottom bracket 73mm Threaded
Brakes Post Mount 160
Handlebar -
Handlebar tape -
Stem -
Saddle -
Seatpost 31.6 or 30.9
Wheelset -
Tires 29x2.4 max

Geometry

For optimal performance and control on fast and technical tracks, BC40 uses a slack head tube angle and a long front-to-center measurement. The result is geometry that positions the rider further behind the front wheel for world-class ride quality and predictable handling, no matter how hard you push it.

All units are in Millimeters or Degrees
SM MD LG XL
a Stack 598 609 622 633
b Reach 420 445 475 501
c Effective top tube 569 596 630 659
d Seat tube length 395 420 450 500
e Head tube length 95 105 120 135
f Head tube angle 66.5° 66.5° 66.5° 66.5°
g Seat tube angle 76° 76° 76° 76°
h Bottom bracket drop 40 40 40 40
i Chainstay length 435 435 435 435
k Wheelbase 1145 1174 1210 1241
m Fork rake 44 44 44 44
n Front center 710 739 778 806
o Wheel size 29 29 29 29

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