Clean K1 Carbon 26" Short frame

Clean K1 Carbon 26" Short Frame

The new Clean K1 Carbon 26" Short Frame features revised, shorter geometry for a more agile and comfortable ride, perfectly suited to modern bike trials. With its ultra-lightweight construction and instant responsiveness, this is the frame used by Charlie Rolls to win the UCI Trials World Championship 2025.

Description and materials
- Clean K1 26” Short carbon frame, designed and developed in Spain by Clean under the supervision of multi–World Champion Abel Mustieles.
- World Champion edition, used by Charlie Rolls during the 2025 season.
- Rear dropouts spaced at 120 mm, compatible with thru-axle or standard hubs by swapping the Clean inserts available here.
- Manufactured from high-modulus carbon fibre, extremely light and strong: only 1050 g.
- New matte black finish with red Clean logos for a modern, professional look.
- 1 1/8”–1.5” tapered head tube, 120 mm long.
- Dual-tube design around the bottom bracket area provides exceptional stiffness.
- Right dropout includes an integrated mount for a twin–pulley chain tensioner.
- 4-bolt HS rim brake mounts integrated directly into the frame.

Includes
- 1x pair of 12 mm thru-axle inserts.
- Does not include headset, axle, chain tensioner or other accessories, available separately on our website.

The 6 Key Compatibility Points
Below are the main compatibility details to consider:

1) Headset. 1 1/8”–1.5” tapered head tube with an integrated headset system, where the bearings sit directly in the frame without cups. Compatible with the Clean K1.2 Integrated Headset available on our website.

2) Bash plate. This frame does not feature dedicated bashplate mounts. A UCI-type ring protector can be used instead, such as those available in our Ring Protectors section.

3) Bottom bracket. Requires a Press Fit AS30 system, such as the Clean X2 crank and bottom bracket kit.

4) Chain tensioner. Compatible with twin–pulley tensioners such as the Clean X2, Clean X2 Pro, Crewkerz and other similar models.

5) Rear hub. 120 mm rear dropout spacing allows the use of:
Thru-axle rear hubs such as the Clean X3 hub, combined with the Clean thru-axle inserts.
Standard rear hubs using the Clean standard axle inserts.

6) Fork. The steerer tube of the fork must extend at least 2 mm above the top bolt of the stem base for safe and correct installation.

Geometry (with 400 mm fork, +35 mm offset)
- Rear dropout width: 120 mm
- Bottom bracket shell: +71.3 mm
- Head tube length: 120 mm (tapered 1 1/8”–1.5”)

- Wheelbase: 1065 mm
- Bottom bracket/rear axle distance: 378 mm
- Bottom bracket height: +87 mm
- Head angle: 72º

Finish
- Matte black.
- Red Clean graphics.

Weight
- 1050 g.

Additional information
- 6–month warranty covering manufacturing and material defects.
- Does not cover damage caused by misuse, impacts or modifications.
- For any questions regarding compatibility, feel free to contact us and we’ll help you set up your ideal build.