Sirris F43 Fork for Surron Ultra Bee

The F43 fork — Super responsive. Purpose-tuned. Pressure balanced. With 246 mm of ultra plush travel, its true moto architecture is made for the most aggressive riding and we tune it to your exact specifications.

• Plug & Play Installation: The F43 fork seamlessly integrates with the Surron Ultra Bee’s OEM front end setup, factory compatibility with the OEM display, fender, and brake caliper. This is a direct swap for the stock Ultra Bee, with pre-installed dust seal and headset bearing. Designed to fit directly with the Ultra Bee fairing and cable routing. No additional modifications required. 

• Enhanced Front End: 43mm stanchions and robust upper fork tubes provide significant improvement in stability and strength, while maintaining the bike’s turning radius.

• Increased Travel: 246mm of travel, 6mm more than stock, offers extra cushioning, particularly beneficial for aggressive riding.

• Hydraulic Bump Stop: Smoothly handles even the most forceful impacts at maximum stroke, ensuring soft landings.

• True Symmetrical Closed Cartridge: Ensures balanced load distribution and consistent performance, resistant to fade for predictable handling after extensive use. No matter how hard you ride or how many laps you take, closed cartridge will never fade and will always feel predictable.

• Dual Oil Circuits: Separate lubrication and damping oils optimize damping performance without compromise.

• High-Quality Materials: Made from 7000 series aluminum with Type 3 hard anodizing for strength and scratch resistance. Hard chrome stanchions and wrap-around guards extend performance lifespan.

• Ultimate Suspension Tuning: Fully tunable valving for compression and rebound, with spring rates adjustable to your weight and riding style for a tailored suspension setup.

• Lightweight: Each leg weighs only 8.8 lbs (4 kg), offering a powerful yet lightweight upgrade.

F43 Fork Specifications

• Fork Diameter: 43mm USD
• Length: 856mm
• Travel: 246mm
• Offset: 25mm
• Compatibility: Surron Ultra Bee

THE PERFECT PAIR – THE R46 SHOCK 

We highly recommend pairing your F43 Fork with the Sirris R46 Shock. Pressure balanced. Fully adjustable. Optimized for E-Moto. Revolutionize your bike’s potential with harmonized suspension performance front and back. The ultimate suspension package is here.

PLEASE NOTE THE FOLLOWING INFO WHEN SELECTING YOUR FORK SETTINGS:

Rider Weight: Please indicate rider weight without gear.

Type of Riding: Please indicate the terrain you ride your Ultra Bee (MX, Singletrack, Desert, etc.)

Skill Level: Please indicate rider skill level/race class (Beginner, Novice, Expert, Pro)