Comas Kala 1070 HS 26" Frame

Comas Kala 1070 HS 26" Trials Frame

The Comas Kala 26” trials frame from the renowned Spanish brand Comas has been developed to the highest quality standards. With an exclusive design, this model is used by Daniel Cegarra (2023 Junior World Champion) throughout the entire 2024 season.

• Hydroformed tubes with varying thicknesses for 12 mm thru-axles.
• 68 mm bottom bracket shell compatible with the PressFit BB30 system.
• New, more rigid and durable sprung chain tensioner mount.
  
  

Description and Materials
- Made from 6061-T6 aluminum alloy with 7075-T6 machined parts, achieving the best balance between low weight and high strength.
- Tapered head tube for integrated headsets with an upper diameter of 1 1/8” and a larger lower diameter of 1.5”.
- Hydroformed lower down tube, optimizing tube sections for maximum strength with minimal weight.
- The head tube has an opening that removes unnecessary weight.
- The main tubes are joined to each other and to the head tube by reinforcement welding, along with additional lower plates, ensuring maximum rigidity and strength of the front section.
- PressFit BB30 bottom bracket shell.
- The upper chainstays are joined to the top tube by a gorilla reinforcement, essential to prevent flexing of the rear of the bike.
- The lower chainstays are connected by a small reinforcement tube, acting as a bridge, increasing rigidity in this area.
- 4-bolt HS mounts with metric 6 bolts and an integrated CNC brake booster to improve braking performance.
- The dropout, CNC machined in a single piece, integrates a closed mount for a thru-axle and a mount for a dual pulley chain tensioner (not included with the frame). Thanks to this system, the wheel is always perfectly centered.
- With the sprung chain tensioner, the chain tension can be adjusted directly and instantly, without needing to loosen the rear hub bolts or move the wheel.
- Both dropouts are closed, spaced at 116 mm, and designed only for a 12 mm diameter rear thru-axle.

- Note: Comas 12mm Hub Thru-axle, headset, and chain tensioner are not included, available separately.

The 7 Compatibility Keys
Below you can find the main details you need to consider when building the bike around this frame:

- 1) Headset. Compatible with Integrated Headset 1 1/8" - 1.5". If you’d like to use a 1 1/8” diameter fork, you must install an adaptor for the bottom cup, available on our website.

- 2) Bashplate. This frame does not have any bashplate mounts. Therefore, installing a bashring is recommended.

- 3) Bottom Bracket. A Press Fit BB30 bottom bracket (threadless) must be used. That is, a bottom bracket where the cups are pressed into the frame (instead of threaded). Compatible with Clean BB30 cranksets.

- 4) Rear Brake. This frame has HS brake mounts, so be sure to use a rear brake of that type, and M6 bolts.

- 5) Chain Tensioner. This frame requires a sprung chain tensioner, so it is not compatible with eccentrics or other types of tensioners. Compatible with Comas, Clean X2, Clean X2 Pro, Crewkerz chain tensioners, and those of identical dimensions.

- 6) Rear Hub. This frame has a 116 mm dropout spacing and allows the use of:

• Rear hub with thru-axle, such as the Comas rear freehub.

- 7) Fork. Since the head tube of this frame is tapered, with an upper diameter of 1 1/8” and a lower diameter of 1.5”, it is compatible with tapered forks of 1 1/8” – 1.5”. If you want to use a standard 1 1/8” diameter fork, an adapter ring for the lower cup can be installed, available here.

The steerer tube of your fork must be long enough to sit at least 2 mm above the top bolt of the stem base.

To ensure this, we must add the length of the frame’s head tube (in this case, 120 mm), the part of the cups that protrudes from the head tube, the headset spacers (if used), and/or dust caps that sit under the stem, and also the height of the stem base you want to use. Once these calculations are made, you can check if your fork is long enough to sit 2 mm above the top bolt of the stem base.

Dimensions (with a 400 mm fork, +35 mm offset)

- Space between dropouts: 116 mm.
- Bottom bracket shell: 68 mm.
- Head tube: 120 mm.

- Wheelbase: 1070 mm.
- Chain stay lenght: 383 mm.
- Bottom bracket height: + 70 mm.
- Head angle: 72º.

Finish
- Silver with Comas graphics in fluorescent yellow.

Weight
- 1.72 kg (verified by TrialBikes!)

Additional information
This frame comes with a 1-year warranty covering manufacturing and materials defects. Damage incurred from inadequate use, collisions and impacts with obstacles will have a negative effect on the outcome of any guarantee claim.

If you have any doubts, please contact us on info@trial-bikes.com.