KAHA - SRAM FORCE ETAP AXS

$9,990.00

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Chapter2 KAHA Complete Bike – Engineered for Gravel Racing


Speed, control, and versatility—the Chapter2 KAHA Complete Bike is built to dominate gravel racing and off-road adventures. Designed with Chapter2’s “Controlled Speed” philosophy, the KAHA is a high-performance gravel race machine that balances stability, agility, and power transfer, ensuring you can push harder across any terrain.

Crafted from 100% Toray carbon fiber in Japan, the KAHA is lightweight yet incredibly strong, with over 300 individually cut carbon fiber pieces meticulously laid into custom stainless steel molds for optimal performance and durability. This race-focused chassis is paired with the MANA-GRVL integrated handlebar, which enhances aerodynamics while concealing cables and hydraulic hoses for a sleek, clean aesthetic.

The KAHA isn’t just about raw speed—it’s designed for the demands of real-world adventure. With internal downtube storage, multiple mounting points for bottles, racks, and accessories, and generous 47mm tire clearance, it’s ready for everything from gravel racing to multi-day expeditions.

SRAM Force AXS 1x for Seamless Shifting


Equipped with the latest SRAM Force D2 eTap AXS XPLR 12-speed drivetrain, the KAHA delivers instant, wireless shifting precision, giving you complete control in even the roughest conditions. The 1x drivetrain, paired with a 10-44T cassette and a choice of 40T, 42T, 44T, or 46T chainrings, offers a perfect blend of climbing power and high-speed efficiency. Braking is handled by SRAM Force D2 hydraulic disc brakes, with 160mm Centerline XR rotors providing exceptional stopping power on technical descents and loose surfaces.

Winspace Grapid Carbon Wheels – Built for Gravel Performance


The KAHA Complete Bike is fitted with Winspace Grapid carbon wheels, engineered specifically for gravel racing. Designed to offer aero efficiency without sacrificing durability, these wheels enhance acceleration, responsiveness, and ride quality on unpredictable terrain. Wrapped in Pirelli Cinturato Gravel H 700x40c tires, this setup ensures grip, comfort, and reliability on everything from hardpack trails to rough gravel tracks.

Key Specifications

  • Frame & Fork: Chapter2 KAHA Carbon – 100% Made in Japan by Toray
  • Cockpit: Chapter2 MANA-GRVL Integrated Handlebar/Stem, Chapter2 Black Bar Tape
  • Drivetrain: SRAM Force D2 eTap AXS 12-speed (40T, 42T, 44T, 46T Chainring / 10-44T Cassette)
  • Brakes: SRAM Force D2 Hydraulic Disc, SRAM Centreline XR 160mm Rotors
  • Wheels: Winspace Grapid Carbon Wheelset
  • Tyres: Pirelli Cinturato Gravel H - 700x40c
  • Bottom Bracket: Wishbone T47 Ceramic Bottom Bracket
  • Saddle & Seatpost: TCP 3D Printed Carbon Saddle, Chapter2 TUMU Carbon Seatpost

Whether you’re racing Unbound Gravel, tackling SBT GRVL, or simply pushing your limits on local trails, the KAHA Complete Bike is built for performance, speed, and adventure.
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
TAPE: Chapter2 Black Bar Tape
SADDLE: TCP 3D Printed Carbon Saddle
SEATPOST: Chapter2 TUMU Carbon
FRONT BRAKE: SRAM Force D2
REAR BRAKE: SRAM Force D2
SHIFT LEVERS: SRAM Force D2 Etap AXS
REAR DERAILLEUR: SRAM Force D2 Etap AXS XPLR, 12-speed
CHAIN: SRAM Force
CASSETTE: SRAM XG1271, 10-44
CRANKSET: SRAM Force D2 (165, 167.5, 170, 172.5 or 175mm), (40, 42, 44, 46T)
BOTTOM BRACKET: Wishbone T47 Ceramic Bottom Bracket
FRONT WHEEL: Winspace Grapid Carbon Wheel
REAR WHEEL: Winspace Grapid Carbon Wheel
ROTORS: SRAM Centreline XR 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.

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.

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°