SIRRIS F43 CMX Tune | Front Fork

$2,250.00

Default CMX Tuned Forks are for SurRon LBX-Standard Clamp | Call to order for other bike fitment/clamp and rider weight : Heavy (180-220lb) | CMX - Standard Clamp

Medium (140-180lb) | CMX - Standard Clamp Medium (140-180lb) | CMX - Standard Clamp
Heavy (180-220lb) | CMX - Standard Clamp Heavy (180-220lb) | CMX - Standard Clamp

Product variants

Only 1 left!

THE WORLD’S BEST COMPACT
E-MOTO FORK. PERIOD.

An oversized, race-built F43 chassis paired with our CMX-tuned closed cartridge damper — built for elite control, razor-sharp handling, and unreal front-end confidence. This is the strongest, most durable, highest performance fork available.

You need to ride it to believe it.
It’s that good.

Can be configured for the following Bike Fitment: **Default CMX Tuned Forks are for SurRon LBX-Standard Clamp | Call to order for other bike fitment/clamp and rider weight**

SurRon LBX
ERide Pro S
ERide Pro SS 2.0
ERide Pro SS 3.0
ERide Pro SR
Talaria MX4
Talaria MX5
Ventura ONE+

SPRING RATE CHART:

Sirris offers two weight ranges when selecting your CMX Tune F43 fork (Listed weight ranges are rider weight without riding gear on. 15 pounds of riding gear is calculated into the weight ranges)

140 lbs - 180 lbs (Medium)
180 lbs - 220 lbs (Heavy)

FORK SPECS

Architecture Upside down fork
Travel 220 mm
Free length 775 mm
(drop clamp option adds another 25mm of extended length)
Fork Spacing 178 mm - allows for unlimited tire choice (dirt or street)
Fork weight 4 kg per leg (driven by sturdy construction required for the forces and speeds encountered when pushing these bikes to their limits without compromising performance)
Stanchions Ø43, high tensile steel with hard chrome
Outer tubes Seamless 7050 aluminum, type 3 hard anodized coating
Drop outs 6061 aluminum, type 2 anodized coating
Replaceable caliper mount brackets allow for caliper and wheel upgrades
Axle Ultra-high tensile hard chromed axle increases steering precision and confidence
Triple clamps Billet 6061 aluminum, type 2 anodized coating
Optional drop clamp allows for 21” front wheel conversion
Steer tube Seamless 7050 aluminum, type 2 anodized coating
Damping Symmetrical, adjustable closed cartridge with spring backed modified IFP
Damper bodies Seamless 7050 aluminum, type 3 hard anodized coating
Rebound Dual side high tensile steel spring, adjustable
Adjusters External tool-free compression, rebound adjustment
(rebound adjusted using tool)
Seals NOK MX seals
Bushings Daido MX bushings
Guards High impact PP, 210-degree wraparound