Sirris F43 260mm | LSC | Fork for Surron Ultra Bee with Josh Hill SX Tune

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Sirris F43 260mm Fork Ultra Bee UK — Josh Hill SX Tune

The Sirris F43 260mm fork ultra bee uk with Josh Hill Supercross tune brings professional race suspension to the Sur Ron Ultra Bee. Josh Hill — former factory Supercross racer — developed this specific tune for aggressive track riding.

What Is the Josh Hill SX Tune?

The josh hill sx tune sirris fork sur ron ultra bee is a specific valving profile developed for:

  • Aggressive track riding – Supercross-style whoops and jumps

  • Higher speeds – Stable at Ultra Bee's increased speeds

  • Bigger impacts – Enhanced bottom-out resistance

  • Pro-level riders – For those pushing the Ultra Bee hard

Key Features

260mm Travel – Maximum travel available for Ultra Bee.

Josh Hill SX Valving – Professionally developed tune for aggressive track use.

43mm Stanchions – Maximum stiffness for Ultra Bee's weight and power.

Tool-Free LSC – Adjust low-speed compression without tools.

Separate High/Low Speed Compression – Fine-tune damping independently.

Fitment Compatibility

The sirris f43 supercross tune e-moto fork is designed for:

  • Sur Ron Ultra Bee (primary)

  • Altis Sigma (with adapter)

SX Tune vs MX Tune vs Trail Tune

Tune

Best For

Characteristics

SX (Supercross)

Track, whoops, big jumps

Firm, progressive, bottom-out resistant

MX (Motocross)

Natural terrain tracks

Balanced, supportive

Trail

Enduro, technical terrain

Plush, compliant

Tuning Guide for SX Tune

The SX tune is designed to be run firmer than MX or Trail tunes:

Baseline Settings for SX Tune:

  • LSC: 12 clicks from closed

  • HSC: 13 clicks from closed

  • Rebound: 12 clicks from closed

  • Sag: 25-30mm (less sag than trail tune)

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Frequently Asked Questions (FAQ)

Q: Who is Josh Hill?
A: Former factory Supercross racer who developed this specific tune for the Sur Ron Ultra Bee.

Q: Is the SX tune too firm for trail riding?
A: Yes — this tune is designed for track use. For trail riding, consider the Trail tune version.

Q: Will this fork fit my Ultra Bee?
A: Yes — direct bolt-on for Sur Ron Ultra Bee.

Q: Do I need any additional parts for installation?
A: The fork comes complete. Reuse your stock brake caliper and wheel.

Q: What's the difference between 260mm and 246mm versions?
A: The 260mm has more travel and is tuned for SX. The 246mm has slightly less travel and is tuned for MX or Trail.


Ready to Upgrade Your Sur Ron Ultra Bee Front Suspension?

Order your Sirris F43 260mm fork ultra bee uk today. We ship to the UK, USA, and Canada with full tracking and insurance.

📞 Call or Text (USA): +1 (929) 347-9885
💬 WhatsApp (UK): +44 (7760) 745171
✉️ Email: sales@wepedscooters.shop

This is a professional race component — confirm your Ultra Bee year before ordering.

BUY NOW — Sirris F43 260mm SX Tune Fork for Ultra Bee