Clean K1 20" 2026 Frame

Clean K1 20" 2026 Frame

- Clean K1 20" 2026 carbon frame for Trials Bikes, designed for building 20-inch trials bikes with rear disc brake.
- Features an integrated tapered headset design, Press Fit AS30 bottom bracket and 120 mm rear dropouts compatible with a 12 mm thru axle or traditional hub using interchangeable inserts.
- New raw carbon finish with gloss varnish and a subtle black outline Clean logo, giving the frame a particularly clean and understated appearance.
- Weight of just 993 g, while retaining the characteristic geometry of the Clean K1 20".

Description and materials
- New 2026 version of the Clean K1 20" frame, one of Clean’s reference carbon frames for Trials and Bike Trials.
- Evolution of the Clean K1 frame, used by 2022 World Champion Borja Conejos.
- Manufactured from high-modulus carbon fibre, with a new raw carbon finish and gloss varnish.
- Minimalist graphics featuring a black outline Clean logo, discreetly integrated into the raw carbon finish.
- Integrated headset design, eliminating the need for external headset cups and providing a cleaner, more functional setup.
- Mini bash plate mounts with reinforced inserts for improved durability.
- 120 mm rear dropout spacing, compatible with a 12 mm thru axle or traditional hub using interchangeable inserts.
- Tapered 1 1/8” to 1.5” head tube, 120 mm long, compatible with tapered forks for trials bikes.
- Central section with a triangular twin-tube design for maximum stiffness.
- Left dropout with Post Mount disc brake mount, and right dropout with mount for a double-pulley chain tensioner.

Included
- Inserts for 12 mm thru axle and chain tensioner mount.
- Headset, bash plate, chain tensioner and other accessories are not included.

Compatibility
- Frame specifically designed for 20" Trials Bikes.
- Integrated tapered headset, compatible with 1 1/8” to 1.5” tapered forks. An adapter is required for 1 1/8” forks.
- Compatible with bash plates with 39-40 mm bolt spacing and 43 mm between the side mounting centres.
- Requires a Press Fit AS30 bottom bracket, such as the Clean X2.
- Compatible with rear disc brakes using a Post Mount fitting.
- Only compatible with double-pulley chain tensioners.
- 120 mm rear dropout spacing, compatible with a 12 mm thru axle or traditional hub by changing the inserts, provided the hub is disc-brake compatible.
- The minimum fork steerer length must extend 2 mm above the upper stem bolt.

Frame measurements (with 370 mm x 40º fork)
- Rear dropout spacing: 120 mm
- Bottom bracket shell: 68 mm
- Head tube: 120 mm

- Wheelbase: 1005 mm
- Bottom bracket / rear axle distance: 350 mm
- Bottom bracket height: +87 mm
- Head angle: 72.0º

Finishes
- Raw carbon with gloss varnish.
- Black outline Clean logo with a minimalist and understated graphic design.

Weight
- 993 g.