bc original Flint 28" Gravel Frameset - 2023 Model

The Flint 28" Gravel frameset with Kol fork by bc original - The perfect combination for your gravel road adventure

The bc original Flint, already known as a versatile gravel bike frame with generous tyre clearance, has found the perfect complement in the bc original Kol carbon gravel fork. The Kol is an all-round model that impresses with its safety, low weight and numerous bikepacking accessories. With its simple and functional design, it ideally matches the classic look of the Flint, which offers you a modern foundation for gravel road adventures. Thanks to a 70° head tube angle, even more difficult descents are manageable. Toe-overlap, i.e. contact between the toe and the front wheel when turning in, does not occur even with thick 28" tyres and fenders. Speaking of tyre clearance: tyres up to 45 mm wide at the rear and even up to 50 mm wide at the front are possible. In addition, the compact design of the frame with a bottom bracket drop of 55 mm prevents you from pedalling in narrow, gnarly terrain. This way, your bike always retains its agility and you benefit from the direct propulsion of the high-quality aluminium chassis on both short and long distances. This makes for more riding fun and comfort!
In the second generation, the Flint frame features a third bottle cage mount, a revised head tube and improved brake hose routing. The fender and pannier rack eyelets are tried and tested, making this frame suitable for commuting and bikepacking. A Cane Creek headset, a BSA bottom bracket and a seat clamp with integrated dust protection round out the frameset and make it a low-maintenance companion. As you probably know, the name " Flint" is an allusion to the flint that used to be mined from the Lousberg in Aachen, Germany. Behind the name " Kol" is the Middle High German word " kol" for " carbon" , which is a reference to the fork's carbon fibre material.

You can see more of the Flint Gravel frameset and sample builds on our topic page.

Specifications:

Application:

Gravel

Wheel Size:

28"

Size:

S, M, L, XL

Frame Material:

aluminium

Fork Material:

carbon

Technical Information - Frame:

Wheel Standard:

12 x 142 mm (standard)

Axle Type:

12 mm thru-axle

Seatpost (Ø):

27.2 mm

Seatpost Clamp(Ø):

31.8 mm

Headset:

ZS44-EC44

Bottom Bracket Standard:

BSA

Shell Width:

68 mm

Chainline:

43.5 mm

Brake Mount:

flat mount

Chainstay Thickness:

25 mm

Front Derailleur Mount:

low clamp (31.8 mm)

Cable Routing:

external

Bottle Cage Mounts:

3

Technical Information - Fork:

Steerer Tube:

1 1/8" - 1.5" tapered

Wheel Standard:

12 x 100 mm (standard)

Axle Type:

12 mm thru-axle

Brake Mount:

flat mount

Offset:

50 mm

Steerer Tube Length:

300 mm

Axle to Crown:

398 mm

Over Locknut Dimension:

100 mm

Steerer Tube Material:

carbon

Crown Material:

carbon

Blade Material:

carbon

Dropout Material:

carbon

Approved For:

Weight Limit:

120 kg system weight (bike, rider, gear)

Rotor Size (max.):

160 mm (rear), 180 mm (front)

Tyre Size (max.):

45-622 (rear), 50-622 (front)

Chainrings:

1x, 2x

Chainring Size (max.):

1x 42 teeth, 2x 36-46 teeth

Features:

• balanced geometry for short or long trips
• classic, compact frame shape
• integrated chainstay protector
• lightweight full carbon fork with numerous mounts for lighting, fender, pannier rack
• external cable routing on the frame enables easy maintenance
• internal, user-friendly cable and hose routing on the fork
• revised model with an additional bottle cage mount on the down tube
• improved brake hose routing: plastic brackets instead of braze-ons
• head tube with black anodised bevel for improved optics
• crown race angle / lower headset bearing 36° x 45°
• frame and fork developed and tested according to Zedler ADV+ standard
• fender mount
• pannier rack eyelets
• seatpost Clamp w/ Dust Cover
• thru-axle lever with integrated T25

Geometry:

S:

Recommended Height:

160 cm - 170 cm

Stack:

570 mm

Reach:

365 mm

Seat Tube Length:

475 mm

Effective Top Tube Length:

540 mm

Head Tube Length:

150 mm

Chainstay Length:

425 mm

Wheelbase:

1022 mm

BB Drop:

55 mm

Seat Tube Angle:

73°

Head Tube Angle:

70°

M:

Recommended Height:

165 cm - 180 cm

Stack:

580 mm

Reach:

382 mm

Seat Tube Length:

485 mm

Effective Top Tube Length:

560 mm

Head Tube Length:

160 mm

Chainstay Length:

425 mm

Wheelbase:

1044 mm

BB Drop:

55 mm

Seat Tube Angle:

73°

Head Tube Angle:

70°

L:

Recommended Height:

175 cm - 190 cm

Stack:

595 mm

Reach:

404 mm

Seat Tube Length:

495 mm

Effective Top Tube Length:

585 mm

Head Tube Length:

175 mm

Chainstay Length:

425 mm

Wheelbase:

1070 mm

BB Drop:

55 mm

Seat Tube Angle:

73°

Head Tube Angle:

70°

XL:

Recommended Height:

185 cm - 200 cm

Stack:

608 mm

Reach:

430 mm

Seat Tube Length:

510 mm

Effective Top Tube Length:

615 mm

Head Tube Length:

190 mm

Chainstay Length:

425 mm

Wheelbase:

1100 mm

BB Drop:

55 mm

Seat Tube Angle:

73°

Head Tube Angle:

70°

Shipping Notice:

The Flint frame and Kol fork are each fitted with a thru-axle and all bolts. All other parts of the scope of delivery are not pre-assembled.

Note from the manufacturer:

The Cane Creek headset upper part is supplied with fork claw. However, this must not be used because it is a carbon steerer tube. Instead of the star nut, the headset expander, which is also included, must be used.
The maximum tightening torque of 2 Nm for the T25 bolts on the fork legs must not be exceeded.

Contents:

• 1 x bc original Flint gravel frameset
• 1 x bc original Kol carbon gravel fork
• 1 x Cane Creek 40 ZS44 headset top assembly
• 1 x Cane Creek 40 EC44 headset bottom assembly
• 1 x derailleur hanger, black
• 1 x derailleur hanger, orange
• 4 x bolts for derailleur hangers
• 1 x bc original thru-axle for frame, incl. T25 tool
• 1 x bc original thru-axle for fork, incl. T25 tool
• 1 x headset expander
• 1 x seatpost clamp with integrated dust cover
• 10 x bottle cage screws T25 (only for size S + M)
• 11 x bottle cage screws T25 (only for size L + XL)
• 6 x T25 Anything Mounts bottle cage bolts
• 2 x T25 bolts for fenders and light attachments
• 3 x cable guides with fastening bolts
• 4 x cable ties
• 3 x C-clips
• 1 x bc basic A4 sticker sheet