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AB-st Gravel Bike

US$2,900.00

When the adventure starts at your front door your bike needs to be ready for anything and everything and our complete AB-st with Shimano’s GRX Drivetrain will take you through the badlands and back. With the main focus being to create our best-yet gravel mashing machine we went to painstaking lengths to make the AB-st equally viable as a multi-day bikepacking rig, mainly through the seemingly endless mounting options, extra wide tire clearance and the cushy, rake-adjustable front forks. Not after a complete? Get your AB-st Frameset here. Please note: Due to supply chain issues we may need to make minor adjustments to the build kit. We’ll communicate any issues with you before moving forward with the build.

Frameset

FRAME 4130 LY Select Chromoly Steel Frame with Internal Routing
FRONT FORK Carbon Adventure Fork with Internal Routing and adjustable rake.

Components

HANDLE BAR Easton EA50 AX
STEM Easton EA50 3D Forged
BRAKES Shimano GRX RX810 Hydraulic Disc Brake
SADDLE BBB Spectrum 145mm
SEATPOST Easton EA50

Wheels

RIMS Easton AR25 Novatec
HUBS Novatech sealed bearings
TIRES WTB VNine Line TCS 29 x 2.25

Drivetrain

SHIFTERS Shimano GRX
CRANKS Easton EA90 Cranks
CASSETTE
REAR DERAILLEUR Shimano GRX600

Frameset Specs

Designed to take on whatever terrain you throw at, be it your daily commute, exploring your local trails, or camping in the bush the AB-st is up for the task. Built with 4130 LY Select Chromoly Steel and our carbon ADV fork, The AB-st offers a stable, confident, yet playful feel. The frameset, front forks and the top tube are well equipped with mounting options, allowing you to attach all the accessories you need and where you want them. With clearance for up to 29×2.25” tires and a long wheelbase, this bike is designed with bikepacking and getting RAD in mind.

Features

4130 LY Select Chromoly Steel Frame with Internal Routing
Carbon Adventure Fork with Internal Routing
Front Fork Rake Adjustable to 47mm or 52mm
Thru Axels Front and Rear (12×100 F, 12×142 R)
FSA Integrated Headset
Weight of Medium is 6.25 Lbs
Available Sizing – S, M, L, XL

Included with Frameset – Frame, Fork, FSA Headset, Seatpost Clamp and Front And Rear Axels

Limited to 100

AB-st GRX Gravel Bike Build Kit

Shimano GRX Shifters

– Gravel Inspired Lever and Bracket Ergonomics.
– Anti-Slip Brake Lever.
– Greater Mixed-Terrain Control.
– Same Light Shifting Operation as Top Tier Systems.

Shimano GR600 Derailleur

– Adjustable Chain Stabilizer Prevents Chain Slapping and Drops
– Toggle Clutch On/Off To Match The Terrain
– Switch Stabilizer On/Off To Match The Terrain
– Gravel-Tuned Clutch Tension
– Silent And Uninterrupted Rear Shifting on Rough Terrain

Shimano GRX Calipers

– Excellent Heat Dissipation.
– Flat Mount And Anti-Mud Specification.
– Convenient Tool Access.
– Easy And Clean Bleeding System.

WTB VNine Line TCS 29 x 2.25 Tires

– Lightweight design specifically for cross-country racing.
– Short knob height increases rolling efficiency.
– Hard centerline tread compound matched to soft side knobs coat a supple
– Gram-conscious casing designed to be compliant while still trail worthy.

Easton AR25 Novatec

– 25mm internal width.
– EA50 Alloy.
– Offset nipple bed for improved spoke tension balance and wheel strength/stiffness.
– Tubeless ready with strong tire retention bead.

Easton EA50 AX

– The same MCD drop technology as our top of the line road bars.
– Flared to 16 degrees for comfort in the drops and control on gnarly terrain or long gravel assaults.

Easton EA50

– Durable EA50 aluminum alloy shaft .
– Easy-to-adjust two-bolt clamp.
– Forged aluminum clamps offer rock-solid stability.
– 10-millimeters of offset will accommodate any bike fit.

Easton EA50

– Easton delivers quality and sound engineering all the way down to this family of entry-level stems.
– EA50 Alloy.

Geometry

	S	M	L	XL
Recommended Rider Height	5’3″-5’6″	5’6″-5’9″	5’9″-6’2″	6’2″-6’6″
Seat Tube C-T	450mm	480mm	510mm	540mm
Seat Tube Angle	74º	74º	74º	74º
Head Tube Length	150mm	170mm	190mm	210mm
Head Tube Angle	70°	70°	70°	70°
Top Tube Horizontal Length	535mm	565mm	595mm	615mm
Stack	569mm	588mm	607mm	626mm
Reach	391mm	415mm	440mm	455mm
Fork length A-C	398mm	398mm	398mm	398mm
Chainstay Length	430mm	430mm	430mm	430mm
BB Drop	72mm	72mm	72mm	72mm
Wheelbase	1046mm	1077mm	1108mm	1130mm

Small

Recommended Rider Height	5′3”-5’5″
Seat Tube C-T	450mm
Seat Tube Angle	74º
Head Tube Length	150mm
Head Tube Angle	70°
Top Tube Horizontal Length	535mm
Stack	569mm
Reach	391mm
Fork Length	398mm
Chainstay Length	430mm
BB Drop	72mm
Wheelbase	1046mm

Medium

Recommended Rider Height	5′6”-5’9″
Seat Tube C-T	480mm
Seat Tube Angle	74º
Head Tube Length	170mm
Head Tube Angle	70°
Top Tube Horizontal Length	565mm
Stack	588mm
Reach	415mm
Fork Length	398mm
Chainstay Length	430mm
BB Drop	72mm
Wheelbase	1077mm

Large

Recommended Rider Height	5′9”-6’2″
Seat Tube C-T	510mm
Seat Tube Angle	74º
Head Tube Length	190mm
Head Tube Angle	70°
Top Tube Horizontal Length	595mm
Stack	607mm
Reach	440mm
Fork Length	398mm
Chainstay Length	430mm
BB Drop	72mm
Wheelbase	1108mm

Extra Large

Recommended Rider Height	6’2”-6’6″
Seat Tube C-T	540mm
Seat Tube Angle	74º
Head Tube Length	210mm
Head Tube Angle	70°
Top Tube Horizontal Length	615mm
Stack	626mm
Reach	455mm
Fork Length	398mm
Chainstay Length	430mm
BB Drop	72mm
Wheelbase	1130mm

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