Baseplate Shim

Optional.

For further support, please contact us.

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Getting Started.

Using the Baseplate Shim is Fine-Tuning Mastery. Running the Baseplate Shim is not required, it is a bonus to help you balance out your board for certain characteristics. Don’t get overwhelmed thinking that Baseplate shimming is a necessity.

Benefits.

That said, your KT Foiling Hardware Kit includes a subtle 1.0° baseplate shim that can slide in between your mast and board to adjust the overall angle for different riding styles, conditions, and to accommodate for varying track box angles or board rocker.

While tail wing shims adjust specific aspects of lift, drag, and stability, baseplate shimming affects the whole setup, helping you fine-tune for specific disciplines and feel.

If you’re an experienced rider that likes to get technical, here’s how to use it:

Nose-Up (Thick End in the Front).

Effect:

– Enhances carving and pitch stability, making it ideal for high-speed winging, towing, kite foiling, or racing.
– Adds more control for faster speed ranges, improving stability during turns and minimizing pitching at higher velocities.
– Reduces pumping efficiency and initial lift, which may require rider to shift their stance slightly back OR move the mast forward 0.5cm in the tracks.

Best For:

– Riders focused on high-speed performance, surf style carving, and control in racing, tow, or kite foiling scenarios.
– Winging or towing where speed and carving stability are critical.

Nose-Down (Thick End in the Back).

Effect:

– Increases pumping efficiency and improves initial takeoff.
– Reduces carving stability but provides exceptional low-speed handling and feel.

Best For:

– Flat water pumping, light wind winging, light wind downwinders, micro surf, and lower-speed ranges.
– Riders focusing on lower-speed conditions were pumping and takeoff are prioritized.

Baseplate Shim.

Your KT Foiling Hardware Kit includes a subtle 1.0° baseplate shim that can slide in between your hydrofoil mast and board to adjust the overall angle for different riding styles, conditions, and to accommodate for varying track box angles or board rocker.

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Direction

Nose Down or Nose Up.

Nose Down.

Takeoff Issues (Board Flat).

Use when: The tail is bogging or the foil is not lifting enough.

Nose Down.

Riding Issues (Foil Flat).

Pivot turns, small taps pumping, “dropping out” or stalling while pumping, back footed carve, not secure at high speed. Preferred at lower speeds or pump situations like downwind, small wave prone, flat water pump.

Nose Up.

Takeoff Issues (Board Flat).

Use when: The nose is bogging or the foil is lifting too soon.

Nose Up.

Riding Issues (Foil Flat).

Carving turns, secure high speed, hard to bring back up in pumps. Preferred in highspeed riding like Winging, towing, or kiting.

Carbon.

With Baseplate Shim.

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Aluminum.

With Baseplate Shim.

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Stock Sizes.

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Installation.

Due to its design, the Baseplate Shim can be slid into place even with the mast already installed.

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Hardware.

All neccessary hardware to mount and tune your Shims already comes with your Hardware Set.

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Hardware Parts.

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Feedback

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Baseplate Shim Setup SKU UPC Model
Michael, Home  
Aug 16, 2025 

How does baseplate shimming affect the tail shim ? If I use a baseplate shim do I keep tail shim the same ?

Response: Hey Michael,

Thank you for reaching out!

Baseplate shimming should not affect the tail shim that you use. The baseplate shim only manipulates the angle of the board relative to the foil. So the foil should move through the water the same.

That all being said, if you want the foil to be better on the low end you can +0.5 to the tail shim value. Otherwise if you would like the foil to be faster on the top end we have had a lot of people enjoy -0.5 to the tail shim value.

Hope this helps! Let us know if you have any other questions.

Thank you,
Logan Bediamol

5.0 5.0 1 1 How does baseplate shimming affect the tail shim ? If I use a baseplate shim do I keep tail shim the same ? Baseplate Shim Setup