Kabra S20 20'' Trials Frame

This new version has a 1005mm wheelbase, therefore its geometry is ideal for those riders who are 14+ years old, approximately.

Description and materials
- New S20 1005mm frame from Spanish brand Kabra.
- Features a completely updated, exclusive design, with a new hydro-formed downtube that increases strength and stiffness thanks to its optimal shape.
- Made from high quality 6066-T6 aluminium alloy, which allows for the best compromise between great performance, low weight and affordable price.
- Features a standard 125mm long, 1 1/8” diameter head tube for internal headsets. It has a large front hole that helps remove any excess material as well.
- Each one of the main tubes is gusseted to the head tube, which increases the front end’s stiffness and strength.
- The down tube has an optimized shape that helps increase welding surface on the ends, therefore improving tensile and fatigue strength.
- Twin seat tube design allows for increased strength and pedaling response.
- Standard 68mm bottom bracket shell, designed to use threaded bottom brackets with standard 1.37”x24tpi thread.
- The BB tube features 4-bolt mini-bashplate mounts compatible with several brands’ bashplates currently available.
- Also, the bottom bracket shell is CNC machined in one piece that integrates stays reinforcements, increasing their weld surface.
- Curved seat stays help increase tyre clearance and also increase rear end’s stiffness.
- The seat stays are joined to the top tube with an integrated brake booster.
- Flat, horizontal dropouts have been accurately CNC-machined, spaced at 116mm and designed to use snail cams.
- Post Mount disc brake mount, CNC machined with an additional reinforcement on the inside that helps prevent it from cracking.

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

- 1) Headset. This frame has a standard headtube with 42mm inner diameter, compatible with 1 1/8” internal headsets.

- 2) Bashplate. This frame has 4-bolt bashplate mounts on the bottom bracket shell. This means it’s compatible with Play, Breath and those bashplates with the following dimensions:
         · Distance between front and rear holes: 68mm.
         · Lateral distance between holes: 80mm.

- 3) Bottom Bracket. A threaded BB with standard 1.37”x24tpi thread must be used, therefore any traditional or BB30 threaded BBs can be used (Try-All, Hashtagg, Bonz, etc.).

In order to prevent the cranks from rubbing the seat stays, which may happen due to varying crank offsets for each model, it’s recommended to install a 127,5mm or 128mm wide bottom bracket.

- 4) Rear Brake. This frame has Post Mount 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).

The rim brake version only has 4-bolt rear rim brake mounts, so be sure to use a rear brake of that type. The spacing between mounts is 100mm.

- 5) Chain tensioner. This frame is designed for use with snail cams. Since the dropouts are spaced at 116mm, the rear hub width plus the 2 snail cams must add up to 116mm.

- 6) Rear hub. Since this frame is designed for use with snail cams, the rear hub width plus the 2 snail cams must add up to 116mm. Most 20” rear hubs are 110mm wide, therefore you’ll need 2x 3mm-thick snail cams, in this case.

Also, since this frame only has disc brake mounts, the rear hub must feature disc brake mounts too.

- 7) Fork. The steerer tube on the fork must be long enough to be at least 2mm over the top bolt on the stem’s steerer tube clamp.
To ensure this, you must add the length of the headtube (125mm 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 365mm x 40mm fork)
- Space between dropouts: 116mm
- Bottom bracket shell: 68mm
- Head tube: 125mm

- Wheelbase: 1005mm
- Chain stay length: 350mm
- BB Rise: +85mm
- Head Angle: 71º

Finishes
- Anodized black, with Kabra S20 red and white graphics.

Weight
- 1525g