Clean K1 Carbon 20'' Frame

Clean K1 Carbon 20'' Frame

Description and materials
- Clean K1 20” carbon frame, designed in Spain by Clean with inspiration from their successful Clean X2 frame.
- Developed and tested for months by Clean Trials team riders Abel Mustieles, Sebas Ruiz, Benito Ros and Ion Areitio.
- Made of high-modulus carbon fibre, which allows for a huge stiffness increase compared to aluminium frames, and it just weighs 985g!
- Each tube has its own optimized, variable thickness, ensuring the best performance while riding.
- Features a 1220mm-long tapered headtube, for 1 1/8” – 1,5” tapered headsets.
- Twin seat-tube design, shaped like a triangle to increase strength and stiffness.
- Vertical dropouts spaced at 116mm.
- The Post Mount disc brake mount is integrated onto the left dropout.
- The sprung chain tensioner mount is integrated onto the right dropout.
- 4-bolt mini-bashplate mounts on the BB tube.
- Includes a mini-bashplate with rubber already installed, as well as BB cups and bearings.
- Does not include a headset, chain tensioner nor any additional accessories, available separately.

The 7 Compatibility Keys
Below you can find the main details you need to consider when installing different components on this frame:

- 1) Headset. Since the headtube on this frame is tapered, with 1 1/8” top and 1,5” bottom diameters, it’s compatible with 1 1/8” – 1,5” tapered forks. If you’d like to use a standard 1 1/8” diameter fork, you can install an adaptor for the bottom cup, as in the one supplied with Clean’s 1 1/8” – 1,5” tapered headset, available on our catalogue.

- 2) Bashplate. This frame comes with its own mini-bashplate. In any case, it’s compatible with the 2-piece Clean Light, Bonz Pro Light and those bashplates with different dimensions the following dimensions:
· Distance between front and rear bolts: 39-40mm
· Side distance between bolts: 43mm.

- 3) Bottom Bracket. A Press Fit AS30 bottom bracket must be used, like Clean’s X2 crankset.

- 4) Rear Brake. This frame has Post Mount rear disc brake mounts, so be sure to use a rear brake of that type. Post Mount brake calipers sit onto the brake mounts, instead of sideways (as is the case on IS calipers).

- 5) Chain tensioner. This frame requires a sprung chain tensioner, so other additional tensioners aren’t needed. It’s compatible with Clean X2 chain tensioner and those with identical dimensions.

- 6) Rear hub. Since this frame features double-wheel chain tensioner mounts, a 116mm wide rear hub must be used. In case you’d like to install a rear hub with 110mm spacing (common in most 20” bikes that use snail cams), then you must add 3mm spacers to each side of the hub, in order to result in the total of 116mm this frame requires.
Also, since this frame only has disc brake mounts, the rear hub must feature disc brake mounts too.

- 7) Fork. The steerer tube on your fork must be long enough so that at least 2mm of it remain above the top bolt of your stem’s steerer tube clamp.
To ensure this, you must add the length of the headtube (120mm for this frame), plus the cups bits that sit outside the headtube, plus the headset spacers (if any) and/or dust cover sitting under the stem, plus the length of your stem’s steerer tube clamp. Once you’ve done this, you’ll be ready to know if your fork is long enough so that at least 2mm of it remain above the top bolt of your stem’s steerer tube clamp.

Geometry (measured with a 370mm x 40º fork)
- Space between dropouts: 116mm
- Bottom bracket shell: 91mm
- Head tube length: 120mm, 1 1/8” – 1,5” tapered

- Wheelbase: 1005mm
- Chainstay Length: 350mm
- BB Rise: +87mm
- Head Angle: 72º

Finishes
- Matt black, with Clean K1 white and red graphics.

Weight
- 993.26g, total weight of 1109g (frame, mini-bashplate, rubber, BB cups and BB bearings).

Additional Information
This frame comes with a 6-month warranty covering manufacturing or material defects. Any damage caused by inadequate use will not be covered under warranty.
If you have any doubts regarding this frame, don’t hesitate to ask.