alpenchallenge AC01 IGH - Alfine 8


Technical Details

Specification

Geometry

 

Size S M L XL
Stack mm 533 571 590 628
Reach mm 390 406 415 431
Seat tube st mm 440 485 515 560
Top tube tt‘ mm 547 575 590 617
Head tube ht mm 100 140 160 200
Seat angle sa ° 73.5 73.5 73.5 73.5
Head angle ha ° 72 72 72 72
Rear center rc mm 412 412 412 412
Front center fc mm 591 620 635 663
Wheelbase wb mm 992 1022 1037 1075
BB drop mm 71 +/-5 71 +/-5 71 +/-5 71 +/-5
Fork length fl mm 400 400 400 400
Fork rake fr mm 45 45 45 45
Trail mm 63 63 63 63
Crank length mm 170 170 175 175
Stem length mm 90 100 110 120
Stem angle ° ±12 ±12 ±12 ±12
Bar width mm 600 600 600 600
Post length mm 350 350 350 350
Post offset mm 15 15 15 15
Stand over height mm 724 767 787 828

 

Concept

Looks faster

Technology and innovations from our rapid road bikes can easily be seen in the new design. We incorporated aero advantages from our Timemachine models and integrated the benefits of angle compliance from our Granfondo designs.

Feels faster

We designed a cut-away shape into the seat tube for more than an aerodynamic advantage. It also allowed us to match the 412 mm chain stays of our Granfondo GF01, while at the same time creating clearance for fenders and wider tires, resulting in road responsiveness with urban utility.

Turns faster

Our carbon and aluminum forks were designed in conjunction with the frame, and dimensioned specifically for our ideal fender, tire and wheel sizes. We minimized the fork length, steepened the frame’s head angle and optimized the fork’s trail dimension to achieve quicker steering while retaining confidence-inspiring stability.

Climbs faster

By careful design and material selection, our engineers reduced frame weight by over 500 grams compared to the previous generation. At the same time, lateral and torsional stiffness also increased, resulting in a far more efficient chassis.

Adapts faster

Proprietary Curana fenders can be installed or removed in seconds, allowing riders to change faster than the weather. Aftermarket fenders can be bolted directly to the frame and fork, eliminating noisy, heavy adaptors.

Frameset

  • Triple-butted aluminum tubing
  • Hidden mounting points for fenders
  • Optimized for faster connection using the BMC City Kit
  • Designed for direct mounting of aftermarket fenders, eliminating heavy, noisy adaptors
  • Dedicated to 700c wheels, optimized for tires 28 to 32 mm wide
  • Angle compliance rear triangle design
  • Postmount disc brake attachment for 160 mm rotors
  • Round 31.6 mm seatpost
  • Frame weight 1550 g

Fork 

  • Full carbon construction for Alfine 11 specifications
  • Air-formed aluminum construction for Alfine 8 specifications
  • Hidden mounting points for fenders

Bottom Bracket 

  • BSA threaded bottom bracket

Tapered head tube 

  • 1–1/8" to 1–1/2"

Internal cable routing

Frame sizes 

  • 4 sizes: S / M / L / XL (details see geometry chart)

BMC City Kit - Optional accessories designed to protect both riders and their alpenchallenges 

  • Proprietary, fast-connecting fenders by Curana
  • Fixed, aluminum, LED/LiPo/USB lights by Sparse
  • Antitheft bolts for wheels and cockpit by ixow