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KAHA - SRAM RED E1 ETAP AXS

$11,990.00
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Chapter2 KAHA Complete Bike – Unmatched Speed, Power, and Control on Gravel


The Chapter2 KAHA Complete Bike with SRAM Red E1 AXS is the ultimate high-performance gravel machine, built for speed, precision, and adventure. Whether you’re lining up for Unbound Gravel, SBT GRVL, or tackling long off-road expeditions, this race-tuned gravel bike delivers uncompromising performance on every surface.

Precision Carbon Engineering for Controlled Speed


Designed around Chapter2’s “Controlled Speed” philosophy, the KAHA’s 100% Toray carbon fiber frame and fork are crafted to balance aerodynamic efficiency, stability, and rugged durability. With an integrated MANA-GRVL handlebar, fully concealed cables, and a T47 ceramic bottom bracket, this build ensures seamless power transfer and a clean, fast front-end profile. The TUMU carbon seatpost and TCP 3D-printed carbon saddle round out the cockpit, offering exceptional comfort and support for long hours in the saddle.

With internal downtube storage, multiple mounting points for racks and accessories, and a massive 47mm tire clearance, the KAHA is designed for both race-winning speed and multi-day adventure capability.

SRAM Red E1 AXS – The Pinnacle of Wireless Gravel Drivetrains


The SRAM Red E1 AXS XPLR groupset provides effortless, wireless electronic shifting, with a 12-speed 10-44T cassette offering a wide gear range for climbing, power flats, and technical descents. The Red E1 crankset, available in 40T, 42T, 44T, or 46T chainrings, ensures precise and efficient power delivery across all terrains. SRAM Paceline X 160mm rotors provide powerful, consistent braking, giving you total confidence on steep and unpredictable descents.

Winspace Grapid Carbon Wheels – Designed for Speed and Durability


Rolling on the Winspace Grapid carbon wheelset, the KAHA is optimized for efficiency, speed, and control across gravel and mixed terrain. These lightweight, aero-enhanced wheels are paired with Pirelli Cinturato Gravel H 700x40c tires (available in black or tan wall), ensuring low rolling resistance, exceptional grip, and puncture resistance for long-haul durability.

For those who refuse to compromise, the KAHA Complete Bike with SRAM Red E1 AXS delivers a race-ready experience with the latest technology, cutting-edge materials, and the geometry to push the limits of gravel performance.

Key Specifications

  • Frame & Fork: Chapter2 KAHA Carbon – 100% Made in Japan by Toray
  • Cockpit: MANA-GRVL Integrated Handlebar/Stem (Customisable Length + Width), Chapter2 Black Bar Tape
  • Drivetrain: SRAM Red E1 AXS 12-speed (40T, 42T, 44T, or 46T Crankset + 10-44T Cassette)
  • Brakes: SRAM Red E1 Hydraulic Disc, SRAM Paceline X 160mm Rotors
  • Wheels: Winspace Grapid Carbon Wheelset
  • Tyres: Pirelli Cinturato Gravel H - 700x40c (Black or Tan Wall)
  • Bottom Bracket: Wishbone T47 Ceramic Bearings
  • Saddle & Seatpost: TCP 3D Printed Carbon Saddle, Chapter2 TUMU Carbon Seatpost

The KAHA Complete Bike with SRAM Red E1 AXS is built for riders who demand the best in gravel performance—blending race-ready speed, adventure-ready durability, and world-class engineering into one unstoppable machine.
BIKE SPECIFICATIONS

FRAME: Chapter2 KAHA Carbon: 100% Made in Japan by Toray
FORK: Chapter2 Carbon: 100% Made in Japan by Toray
HANDLEBAR/STEM: Chapter2 MANA GRVL Integrated (Choose your length + width)
TAPE: Chapter2 Black Bar Tape
SADDLE: TCP 3D Printed Carbon Saddle
SEATPOST: Chapter2 TUMU Carbon
FRONT BRAKE: SRAM Red E1
REAR BRAKE: SRAM Red E1
SHIFT LEVERS: SRAM Red E1 Etap AXS
REAR DERAILLEUR: SRAM Red R1 Etap AXS XPLR, 12-speed
CHAIN: SRAM Red E1
CASSETTE: SRAM XG-1271, 10-44
CRANKSET: SRAM Red E1 (165, 167.5, 170, 172.5 or 175mm), (40, 42, 44, 46T)
BOTTOM BRACKET: Wishbone T47 Ceramic Bearings
FRONT WHEEL: Winspace Grapid Carbon Wheel
REAR WHEEL: Winspace Grapid Carbon Wheel
ROTORS: SRAM Paceline X 160mm
TYRES: Pirelli Cinturato Gravel H - 700 x 40c (Black or Tan Wall)

ABOUT THE FRAME

The KAHA features fully integrated cabling via the MANA-GRVL Handlebar, Internal downtube storage compartment as well as a race ready and well balanced performance geometry.

The design brief for the KAHA was relatively simple, scratched onto the back of an envelope were the words “Controlled Speed”.

However, the journey to arrive at the perfect solution was anything but simple. We don’t want to skimp on practical details like storage, pannier/ fender racks, or ability to fit TT-Clip bars. Iteration after iteration, review after review, every little detail and decision was scrutinized to the nth degree.

Needless to say, all that effort was worth it, as the final deliverable achieves all the performance metrics we had envisioned for a High-Performance Gravel Racer.

FEATURES/BENEFITS

Performance Geometry: Improved Agility at Speed

Integrated MANA-GRVL: Improved Aerodynamics and Clean Aesthetics

MANA-GRVL (Clip-on): Ability to use Clip-on Bars

50mm Front & 47mm Rear Tire Clearance: Increased Tire Options

Integrated Storage: Hidden Storage for CO2 Cartridges/Tubes etc

Ample Mounting Points: Flexible Hydration, Luggage & Rack Options

T47 BB: Noise-free and Easy to Service

Frameset Only: Bespoke & Personal

TORQUE SPECS
Seatclamp:
6Nm
Stem (Steerer):
6Nm
Stem (Handlebar):
6Nm
Front Derailleur Hanger:
3Nm
Rear Derailleur Hanger:
2Nm
BB Cable Guide Cover:
1Nm
Thru-Axle:
10Nm
Water Bottle Cage Bolts:
3Nm

CUSTOMISABLE AT NO EXTRA COST

Unlike most bike brands where you are left paying extra for switching out stem length, handle bar width, tyre width, cassettes, chain ring size and crank length we can tailor build the bike to your preferences.

Choose the following preferences:

  • MANA GRVL handlebar size (available in 11 size combinations)
  • Cassette
  • Chainring
  • Crank length
  • Tyre width

MANA GRVL HANDLE BAR INNOVATION

The MANA-GRVL has been designed for the KAHA to optimise aerodynamics and enable integrated cabling.

The MANA-GRVL’s one-piece bar and stem construction features a 12º flare for tackling any gravel adventure you throw at it.

Made 100% from TORAY® Carbon and tested to EN ISO 4210:2014. The careful use of specific carbon lay-ups made in Japan creates just the right blend of stiffness for accurate and predictable steering yet enough “give” to take the sting out of any uneven road surfaces.

The MANA-GRVL is available in 6 size combinations so that you can dial in your desired position with effective stem lengths from 80-130mm and widths from 469-525mm.

Finally, with the adoption of trigger-happy electronic shifting and use of out-front GPS devices for those Strava® moments, the CHAPTER2 Bar + Stem combo comes ready to install Shimano® EW-RS910 bar end mounted Junction Box and Barfly® or K-Edge® style GPS mounts respectively.

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FEATURES

FULLY INTEGRATED CABLING - IMPROVED AERODYNAMICS - CLEAN AND SLEEK AESTHETIC

ADVENTURE OPTIONS - PANNIER & FENDOR MOUNTS  - UP TO 5 BOTTLE MOUNTS - BENTO BOX MOUNT

INTEGRATED STORAGE - STORE SERVICE ITEMS - MOUNT DI2/EPS BATTERY

TIRE CLEARANCE - UP TO 50MM FRONT - UP TO 47MM REAR

BIKE FIT OPTIONS - CAN BE USED WITH MANA - OR WITH STANDARD STEM

DOWNTUBE/BB - T47 85.5BB - DOWNTUBE PROTECTION - ADDITIONAL BOTTLE MOUNT

integrated mana2 aero bar

The MANA-GRVL has been designed for the KAHA to optimise aerodynamics and enable integrated cabling.

The MANA-GRVL’s one-piece bar and stem construction features a 12º flare for tackling any gravel adventure you throw at it.

Made 100% from TORAY® Carbon and tested to EN ISO 4210:2014. The careful use of specific carbon lay-ups made in Japan creates just the right blend of stiffness for accurate and predictable steering yet enough “give” to take the sting out of any uneven road surfaces.

The MANA-GRVL is available in 6 size combinations so that you can dial in your desired position with effective stem lengths from 80-130mm and widths from 469-525mm.

Finally, with the adoption of trigger-happy electronic shifting and use of out-front GPS devices for those Strava® moments, the CHAPTER2 Bar + Stem combo comes ready to install Shimano® EW-RS910 bar end mounted Junction Box and Barfly® or K-Edge® style GPS mounts respectively.

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SIZE GUIDE
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FRAME GEOMETRY

Note:

All dimensions are in mm unless otherwise noted

KAHA XS S M L XL
Stack 519 545 571 596 622
Reach 377 386 395 404 413
A. Top Tube 535 553 569 586 603
B. Head Tube 101 129 148 175 202
C. Seat Tube Angle 73° 73° 73° 73° 73°
D. Head Tube Angle 71° 71° 72° 72° 72°
E. Seat Tube 436 462 491 512 541
F. BB Drop 70 70 70 70 70
G. Rear Centre 415 415 415 415 415
H. Wheelbase 1009 1027 1024 1041 1059
I. Front Centre 604 622 619 636 653
J. Fork Offset 65 65 55 55 55
Stem NA NA NA NA NA
Standover 751 776 804 826 853
Rider Height 160-170 165-175 170-180 175-185 >180
Max / Tire Size F/R 50/47 50/47 50/47 50/47 50/47
Rear Caliper Mount 25 25 25 25 25
MANA HANDLEBAR

Note:

All dimensions are in mm unless otherwise noted

Size 80x469 90x480 100x491 110x502 120x513 130x524
A. Stem 80 90 100 110 120 130
B. Width at Drops 469 480 491 502 513 524
C. Width at Hoods 380 391 402 413 424 435
D. Reach 70 70 70 70 70 70
E. Drop 110 110 110 110 110 110
F. Stem Angle 7.0° 7.0° 7.0° 7.0° 7.0° 7.0°
G. Flare 12.0° 12.0° 12.0° 12.0° 12.0° 12.0°