Surron Ultra Bee Sirris F43 Fork | Trail Tune, 246mm Travel

This Ultra Bee trail fork is the Sirris F43 in Trail Tune for the Surron Ultra Bee: 246mm of travel, supportive and sporty, built to go fast over mixed terrain. Six spring rates cover riders from 130 to 350 pounds.

Specs:

• 246mm travel, upside down architecture - long-travel MX layout sized for the Surron Ultra Bee.
• 856mm free length.
• 43mm stanchions in high tensile steel with hard chrome.
• Seamless 7050 aluminum outer tubes and damper bodies, type 3 hard anodized.
• Forged 6061 aluminum drop outs and triple clamps, type 3 hard anodized - forged, not billet, on the Ultra Bee version.
• Symmetrical closed cartridge with spring backed IFP - adjustable compression and rebound damping.
• External compression and rebound adjusters.
• 22 lbs / 10kg including clamps and steerer.
• NBR seals, 210 degree high impact PP guards.
• Trail Tune: versatile and supportive across a wide range of terrain.
• Spring rates by rider weight: Light (130 to 160 lbs): 4.0/4.0 springs; Medium (160 to 210 lbs): 4.8/4.4 springs; Heavy (210 to 230 lbs): 5.0/4.8 springs; X Heavy (230 to 250 lbs): 5.0/5.0 springs; XX Heavy (250 to 280 lbs): 5.4/5.0 springs; 280 to 350 lbs: 5.8/5.4 springs.

Fits the Surron Ultra Bee:

• Surron Ultra Bee

Does NOT fit: Surron Light Bee, Surron LB2

Surron Ultra Bee F43 Fork FAQ

Who is Trail Tune for?

Riders covering mixed terrain fast. Trail Tune is versatile and aggressive without the firmness of MX Tune. It is also the only F43 Ultra Bee option with a rate past 320 pounds.

Which spring rate do I pick?

Pick by your weight without gear; Sirris builds 15 pounds of gear into every range. Rates are listed left side / right side. See the full list under Specs.

How is this different from the MX Tune version?

Same F43 chassis, same 246mm travel. The difference is the valving tune and the spring rate ladder. Trail Tune is the one on this page.

Is this the same fork as the 220mm F43 for other bikes?

No. The Surron Ultra Bee F43 is longer: 856mm free length and 246mm of travel, with forged drop outs and clamps. It is built for the Ultra Bee only.

What can I adjust?

Compression and rebound both adjust externally, so you can tune feel without pulling the fork apart.

Ships from USA!