{"product_id":"sirris-f43-220mm-fork-cmx-tune-tool-free-lsc-e-ride-pro-sr","title":"Sirris F43 220mm Fork | CMX Tune | Tool-Free LSC | E-Ride Pro SR","description":"\u003ch2\u003eSirris F43 220mm Fork \u003cmeta charset=\"utf-8\"\u003eCMX Tune | Tool-Free LSC | E-Ride Pro SR\u003c\/h2\u003e\n\u003ch3\u003eBuilt to Dominate Any Terrain, Any Time\u003c\/h3\u003e\n\u003cp\u003eAt REV Rides we see a lot of suspension upgrades come through the shop, but the \u003cstrong\u003eSirris F43 CMX Fork\u003c\/strong\u003e is on another level. This fork was designed specifically for high performance compact e-moto platforms like the \u003cstrong\u003eE-Ride Pro SR\u003c\/strong\u003e, delivering true motocross level suspension performance in a lightweight electric platform.\u003c\/p\u003e\n\u003cp\u003eThe F43 CMX pairs an oversized \u003cstrong\u003e43mm race chassis\u003c\/strong\u003e with Sirris’ proprietary \u003cstrong\u003eCMX tuned closed cartridge damping system\u003c\/strong\u003e. The result is razor sharp handling, incredible front end confidence, and a planted ride feel even when pushing aggressive speeds on rough terrain or jumps. With \u003cstrong\u003e220mm of travel\u003c\/strong\u003e, race grade materials, and tool free compression adjustment, this fork completely transforms the way an E-Ride Pro SR handles off road or on track.\u003c\/p\u003e\n\u003cp\u003eSirris started with their race proven F43 platform and resized it for compact electric motos. The longer \u003cstrong\u003e775mm chassis\u003c\/strong\u003e, oversized stanchions, and billet clamps create a front end that is stronger, stiffer, and far more stable than stock forks. Everything about this suspension system is built to eliminate flex, improve balance, and deliver durability for riders who push their bikes hard.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cbr\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/n4_QaBwQrRE?si=6srx8KQMC7FEOymB\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eOversized Chassis Designed to Outperform\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e43mm hard chrome stanchions\u003c\/strong\u003e resist flex, dents, and nicks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7XXX series hard anodized uppers\u003c\/strong\u003e provide exceptional strength and durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e775mm extended length\u003c\/strong\u003e creates a longer and more planted front end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e220mm travel\u003c\/strong\u003e delivers 20mm more suspension travel than stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet aluminum triple clamps\u003c\/strong\u003e increase stiffness and reduce twisting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e178mm fork spacing\u003c\/strong\u003e allows nearly unlimited tire choice for dirt or street setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect mount stem compatibility\u003c\/strong\u003e for improved cockpit stiffness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra stiff chromoly race axle\u003c\/strong\u003e improves steering precision and control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotorcycle style top cap\u003c\/strong\u003e for consistent steering bearing tension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable caliper mounts and wheel spacers\u003c\/strong\u003e allow brake and wheel upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is not just about stiffness. The F43 CMX was engineered to maintain balance and durability under real riding conditions. Riders get a front end that absorbs punishment while staying predictable lap after lap.\u003c\/p\u003e\n\u003ch3\u003eRace Grade CMX Closed Cartridge Damping\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the fork is the \u003cstrong\u003eCMX tuned symmetrical closed cartridge damper\u003c\/strong\u003e. This advanced system delivers professional level damping performance with separate oil circuits that isolate lubrication and damping oil. That design allows the fork to stay cool, consistent, and predictable during long aggressive rides.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCMX Compact Motocross Tune\u003c\/strong\u003e designed for high speed off road riding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue symmetrical closed cartridge\u003c\/strong\u003e for fade free damping performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent oil circuits\u003c\/strong\u003e separate damping and lubrication oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh flow pistons\u003c\/strong\u003e with tunable compression and rebound valving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic bottom out control\u003c\/strong\u003e softens heavy landings and big hits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard anodized internal components\u003c\/strong\u003e reduce wear and increase durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Daido bushings and NOK MX seals\u003c\/strong\u003e provide smooth performance and long service life\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/y8ZjgHK3_Vc?si=3FkKGJa3XNa6oJMZ\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003eCMX tuning delivers a planted, confidence inspiring ride feel even when riding aggressively. From rough trail riding to high speed track laps, the fork remains consistent and endlessly tunable.\u003c\/p\u003e\n\u003ch3\u003eTool-Free Compression Adjustment\u003c\/h3\u003e\n\u003cp\u003eThe F43 CMX includes \u003cstrong\u003etool free compression adjusters\u003c\/strong\u003e that allow riders to quickly dial in suspension feel without tools. Nearly \u003cstrong\u003e30 clicks of external adjustment\u003c\/strong\u003e make it easy to adapt the fork to different terrain or riding styles.\u003c\/p\u003e\n\u003ch3\u003eDirect Mount Stem System\u003c\/h3\u003e\n\u003cp\u003eThe Sirris steerer tube and motorcycle style top cap system are designed for \u003cstrong\u003edirect mount stems\u003c\/strong\u003e. This setup improves cockpit stiffness and keeps steering bearing torque consistent similar to larger motocross bikes.\u003c\/p\u003e\n\u003cp\u003eThe stock \u003cstrong\u003eE-Ride Pro stem is not compatible\u003c\/strong\u003e because the Sirris steerer tube cannot be clamped. We recommend a \u003cstrong\u003eWarp 9 direct mount stem\u003c\/strong\u003e or the \u003cstrong\u003eHeavy Hitter Adjustable Billet Display Mount by GritShift\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eOptional Drop Clamp for Big Wheel Builds\u003c\/h3\u003e\n\u003cp\u003eThe optional \u003cstrong\u003edrop clamp\u003c\/strong\u003e raises the front end an additional \u003cstrong\u003e25mm\u003c\/strong\u003e, extending overall fork length to approximately \u003cstrong\u003e800mm\u003c\/strong\u003e. This allows riders to run a \u003cstrong\u003e21 inch front wheel\u003c\/strong\u003e while maintaining proper bike balance when paired with longer rear suspension.\u003c\/p\u003e\n\u003ch3\u003eAxle and Brake Mount System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra stiff chromoly axle improves steering precision\u003c\/li\u003e\n\u003cli\u003eReplaceable brake caliper mount brackets allow caliper upgrades\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003e220mm brake rotor setups\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAll Sirris brake brackets are designed for 220mm rotors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArchitecture:\u003c\/strong\u003e Upside Down Fork\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTravel:\u003c\/strong\u003e 220 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Length:\u003c\/strong\u003e 775 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Length with Drop Clamp:\u003c\/strong\u003e ~800 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFork Spacing:\u003c\/strong\u003e 178 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4 kg per leg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStanchions:\u003c\/strong\u003e Ø43 mm high tensile steel, hard chrome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Tubes:\u003c\/strong\u003e Seamless 7050 aluminum, Type III hard anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop Outs:\u003c\/strong\u003e 6061 aluminum, Type II anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle:\u003c\/strong\u003e Ultra high tensile hard chromed race axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Clamps:\u003c\/strong\u003e Billet 6061 aluminum, Type II anodized (Black or Blue)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteer Tube:\u003c\/strong\u003e Seamless 7050 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping:\u003c\/strong\u003e Symmetrical adjustable closed cartridge with modified IFP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Adjustment:\u003c\/strong\u003e External tool free LSC adjuster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebound:\u003c\/strong\u003e Dual side adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeals:\u003c\/strong\u003e NOK MX seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushings:\u003c\/strong\u003e Daido MX bushings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFork Guards:\u003c\/strong\u003e High impact PP wraparound guards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpring Rate Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium:\u003c\/strong\u003e 140 to 180 lb rider weight, 4.0 \/ 4.0 springs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy:\u003c\/strong\u003e 180 to 220 lb rider weight, 4.4 \/ 4.0 springs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRider weight ranges are calculated without riding gear. Approximately 15 pounds of riding gear is factored into the recommended range. Any upgrades such as heavier batteries or controllers should be added to rider weight when selecting spring rates.\u003c\/p\u003e\n\u003ch3\u003eCMX Tune Setup Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFactory settings are measured in clicks from the fully closed position\u003c\/li\u003e\n\u003cli\u003eBack adjusters out from closed position to reach factory settings\u003c\/li\u003e\n\u003cli\u003eRiders near a weight cutoff may adjust preload to fine tune sag\u003c\/li\u003e\n\u003cli\u003eAggressive riders may benefit from moving up one spring class\u003c\/li\u003e\n\u003cli\u003eRiding style and terrain may require additional tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE-Ride Pro SR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho This Fork Is Perfect For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE-Ride Pro riders building a \u003cstrong\u003etrack ready or race focused setup\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTrail riders who want \u003cstrong\u003emaximum durability and front end confidence\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh power builds that need \u003cstrong\u003etrue motocross level suspension performance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-block product-block--tab\"\u003e\n\u003cdiv class=\"collapsibles-wrapper collapsibles-wrapper--border-bottom\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sirris Store","offers":[{"title":"Medium (140-180 lb) \/ CMX - Standard Clamp \/ Black","offer_id":51503119171874,"sku":"430-99-014-MED-02, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SR, MED, BLACK","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Medium (140-180 lb) \/ CMX - Standard Clamp \/ Blue","offer_id":51503119204642,"sku":"430-99-014-MED-04, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SR, MED, BLUE","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Medium (140-180 lb) \/ CMX - Drop Clamp \/ Black","offer_id":51503119237410,"sku":"430-99-014-MED-02-DR, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SR, MED, BLACK, DROP CLAMP","price":2350.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX - Standard Clamp \/ Black","offer_id":51503119270178,"sku":"430-99-014-HVY-02, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SR, HVY, BLACK","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX - Standard Clamp \/ Blue","offer_id":51503119302946,"sku":"430-99-014-HVY-04, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SR, HVY, BLUE","price":2250.0,"currency_code":"USD","in_stock":true},{"title":"Heavy (180-220 lb) \/ CMX - Drop Clamp \/ Black","offer_id":51503119335714,"sku":"430-99-014-HVY-02-DR, 43MM USD, 775MM X 220MM, 25MM OFFSET, E-RIDE PRO SR, HEAVY, BLACK, DROP CLAMP","price":2350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0093\/1672\/8892\/files\/sirris-F43-220-E-RIde-Pro-suspension-fork-3_4-CMX-black_0946a1ed-cfd0-467c-914f-93d4c021e257.jpg?v=1775673780","url":"https:\/\/revrides.com\/products\/sirris-f43-220mm-fork-cmx-tune-tool-free-lsc-e-ride-pro-sr","provider":"REVRides","version":"1.0","type":"link"}