Sirris F43 CMX Fork Upgrade E Ride Pro 3.0/SR (220mm Travel) - PREORDER

Product Info

Sick of your front end getting sketchy every time the trail gets rowdy? The Sirris F43 CMX Fork Upgrade isn’t just another suspension swap, it’s the only bolt-on fork designed specifically for the E Ride Pro SR and SS 3.0, with real R&D behind it.

Most forks on the market are generic rebrands or repurposed mountain bike parts. This isn’t that. Sirris built this fork from the ground up for electric dirt bikes with the geometry, travel, stiffness, and damping to actually back it up.

With 220mm of buttery, bottom-out-resistant travel, you’ll instantly feel more planted at speed, more controlled over jumps, and more confident everywhere from tight woods to big tracks. We’ve been hammering this setup for over 6 months on our shop bikes (“Frankenstein” and “Mamba”), and we kept sending feedback to Sirris until it was dialed.

Two spring rates let you ride your way:

• Medium Tune (140–180 lbs) – perfect for trail and all-around riding

• Heavy Tune (180–220 lbs) – ideal for senders, heavier riders, or anyone who wants extra headroom

👉 Pro Tip: If you're on the lighter end but ride hard, the Heavy spring gives you more tunability and holds up better when landing big.

This fork bolts right up with no weird fitment, no flexy mounts, and no guesswork. Just real performance, proven by riders, not marketers.

Features

• 220mm Travel – 17mm more than stock for bigger hits
• Tool-Free Compression – Quick and easy adjustability
• 178mm Width – Fits knobbies or supermoto tires
• Drop Clamp (Coming Soon) – Adds height for 21” wheels
• Scalloped Billet Clamps – Lightweight and aggressive look
• Direct Mount Compatible – Standard bolt pattern
• Stiff Axle & Dropouts – Improved steering feel
• Swappable Caliper Brackets – Easy brake upgrades
• Closed-Cartridge Dampers – Tuned for rider weight and style
• Threaded Stem Conversion – Allows proper preload
• Spring Options – Medium (140–180 lbs), Heavy (180–220 lbs)